A spaceborne multi-scale hybrid broadband switching system and method

Abstract

The application discloses a kind of spaceborne multiscale hybrid broadband switching system and method, the system includes: spaceborne microwave photon transparent transponder is used to undertake the radio frequency ultra-wideband signal of first bandwidth scale, completes first bandwidth scale spaceborne communication switching;Spaceborne optical domain channelization switch is used to undertake the first bandwidth scale ultra-wideband mixed light signal of spaceborne microwave photon transparent transponder, completes second bandwidth scale spaceborne communication switching;Spaceborne digital switch is used to undertake the second bandwidth scale broadband communication signal of spaceborne optical domain channelization switch, completes third bandwidth scale or packet scale spaceborne communication switching;Spaceborne integrated management and control machine is used to receive the signaling channel data of spaceborne digital switch, completes instruction analysis and distribution, for spaceborne communication switching control.The application improves the utilization efficiency of on-board spectrum and power, can support satellite communication system to realize large port bandwidth, high communication capacity, fine switching scale, flexible controllable, multi-star networking and other capabilities simultaneously.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of data processing, in particular to a spaceborne multi-scale hybrid broadband switching system and method. BACKGROUND

[0002] Traditional communication satellites use microwave transponders to connect user links and feeder links, and punch through user uplink and feeder downlink to realize the reverse transmission of user communication signals to the gateway station. Communication processing is completed on the ground, and then communication data is transmitted to the destination user from the feeder uplink and user downlink. Among them, the port bandwidth and quantity of the transponder directly determine the overall satellite communication capacity and the maximum user service bandwidth. Limited by the small switching scale of the microwave switching matrix, the poor out-of-band suppression of the microwave frequency conversion channel, the large volume, weight and power consumption of the microwave frequency conversion and switching, the satellite communication capacity based on the microwave transponder cannot be further greatly improved; the maximum user beam bandwidth is also limited to the order of hundreds of MHz, and the switching scale is limited to the order of tens of MHz, or even in units of user beams, which leads to the fact that the communication service bandwidth provided to the user cannot be higher and more detailed.

[0003] With the rapid progress of on-board digital technology, communication satellites begin to complete communication processing on board, realize one-hop communication between users, and greatly reduce the switching scale. Among them, the on-board digital flexible transponder technology completes the reception channel separation, channel switching, and transmission channel synthesis in the digital domain, reduces the switching scale from tens of MHz to several MHz, and supports one-hop communication between users on board, but cannot support cross-satellite communication. The on-board packet switching technology completes modulation and demodulation, coding and decoding, data switching, etc. in the digital domain, further reduces the switching scale to the data packet level, and can transmit data packets across satellites to realize cross-satellite networking communication between users, but the on-board digital processing resource overhead is larger. The on-board digital processing technology solves the problem of switching scale of communication satellites, reduces the switching scale from tens of MHz to several MHz, or even to the data packet scale; at the same time, it moves the communication processing from the ground to the satellite, and can support users to realize one-hop communication on board. However, limited by the digital-to-analog conversion bandwidth and digital processing capability and power consumption cost, the on-board digital processing technology cannot support the communication satellite to further improve the overall satellite communication capacity and single-beam bandwidth. SUMMARY

[0004] Therefore, the spaceborne multi-scale hybrid broadband switching system and method provided by the present application can realize greater port bandwidth, higher communication capacity, smaller granularity, and higher flexibility of on-board switching and processing capability, improve the utilization efficiency of on-board spectrum and power, support one-hop communication between users, and enhance the networking application efficiency between satellites.

[0005] The application discloses a spaceborne multi-scale hybrid broadband switching system, which comprises a spaceborne microwave photon transparent transponder, a spaceborne optical domain channelization switch, a spaceborne digital switch and a spaceborne integrated management and control machine.

[0006] The spaceborne microwave photon transparent transponder is used for receiving a radio frequency uplink ultra-wideband communication signal of a first bandwidth scale and modulating the radio frequency uplink ultra-wideband communication signal and a local oscillation signal onto an optical carrier, mixing the radio frequency uplink ultra-wideband communication signal and the local oscillation signal on the optical carrier, outputting an ultra-wideband mixed optical signal and performing optical gain compensation and optical switching on the ultra-wideband mixed optical signal, performing path switching on the ultra-wideband mixed optical signal, performing first radio frequency processing on the gated ultra-wideband mixed optical signal, and outputting a radio frequency downlink ultra-wideband communication signal of the first bandwidth scale; meanwhile, part of the ultra-wideband mixed optical signal is extracted and input to the spaceborne optical domain channelization switch for broadband channel level communication switching processing of a second bandwidth scale, and the spaceborne optical domain channelization switch outputs an ultra-wideband mixed optical signal, which is subjected to second radio frequency processing and output as a radio frequency downlink ultra-wideband communication signal of the first bandwidth scale; the first radio frequency processing comprises photoelectric conversion, radio frequency amplification and filtering; the second radio frequency processing comprises optical switching, photoelectric conversion and radio frequency amplification.

[0007] The spaceborne optical domain channelization switch is used for receiving the ultra-wideband mixed optical signal output by the spaceborne microwave photon transparent transponder, performing channelization frequency conversion on the ultra-wideband mixed optical signal of the first bandwidth scale by using a photon receiving channelization processor, outputting M paths of broadband communication optical signals of the second bandwidth scale and performing optical gain compensation and optical switching on the broadband communication optical signals, performing path switching on the broadband communication optical signals, performing third radio frequency processing on the gated broadband communication optical signals, outputting broadband communication intermediate frequency electrical signals of the second bandwidth scale and inputting the broadband communication intermediate frequency electrical signals to the spaceborne digital switch or the spaceborne optical domain channelization switch; the spaceborne optical domain channelization switch also receives the second bandwidth scale communication intermediate frequency electrical signals output by the spaceborne digital switch or the spaceborne optical domain channelization switch, modulates the second bandwidth scale communication intermediate frequency electrical signals and a local oscillation signal onto an optical carrier, mixes the broadband communication intermediate frequency electrical signals and the local oscillation signal on the optical carrier, outputs broadband communication optical signals and inputs the broadband communication optical signals to optical gain compensation and optical switching for path switching, groups the M paths of the second bandwidth scale communication optical signals and inputs the M paths of the second bandwidth scale communication optical signals to a photon transmitting channelization processor, outputs one path of the ultra-wideband mixed optical signal of the first bandwidth scale and inputs the one path of the ultra-wideband mixed optical signal of the first bandwidth scale to the spaceborne microwave photon transparent transponder; the third radio frequency processing comprises photoelectric conversion, intermediate frequency amplification and filtering; M is a positive integer.

[0008] The spaceborne digital switch is used for realizing third bandwidth scale subchannel level digital circuit switching services or data packet scale bit level digital packet switching services.

[0009] The on-board integrated management and control machine is used for receiving signaling channel net load data output by a starboard digital switch data packet scale bit digital packet switching service of the on-board digital switch, completing analysis and processing of common signaling, side signaling or service band common signaling, and generating management and control instructions to issue the on-board microwave photon transparent transponder, the on-board optical domain channelization switch and the on-board digital switch, so as to realize integrated management and control of the on-board communication switching equipment based on unified on-board control.

[0010] Further, the on-board digital switch is specifically used for:

[0011] In the third bandwidth scale sub-channel level digital circuit switching service mode, the second bandwidth scale communication intermediate frequency electrical signal output by the on-board optical domain channelization switch is received, analog-to-digital conversion is completed, fourth radio frequency processing is completed in the digital domain, the second bandwidth scale communication intermediate frequency electrical signal is output to the on-board optical domain channelization switch, or the third bandwidth scale sub-channel sampling data is output and provided to the on-board digital switch data packet scale bit digital packet switching service. The fourth radio frequency processing includes digital channel analysis, switching and integration.

[0012] In the data packet scale bit digital packet switching service mode, the second bandwidth scale communication intermediate frequency electrical signal output by the on-board optical domain channelization switch or the third bandwidth scale sub-channel sampling data output by the third bandwidth scale sub-channel level digital circuit switching service of the on-board digital switch is received, fifth radio frequency processing is completed in the digital domain, data packet switching between different ports or sub-channels is realized, the second bandwidth scale communication intermediate frequency electrical signal is output to the on-board optical domain channelization switch, or the third bandwidth scale sub-channel sampling data is output and provided to the third bandwidth scale sub-channel level digital circuit switching service of the on-board digital switch, and signaling channel net load data exchange is also performed with the on-board integrated management and control machine. The fifth radio frequency processing includes scrambling and descrambling, coding and decoding, modulation and demodulation, and packet switching.

[0013] Further, the on-board microwave photon transparent transponder is used for receiving on-board resource configuration instructions issued by the on-board integrated management and control machine, completing instruction analysis and issuing instruction control codes to the on-board microwave photon transparent transponder, controlling path mapping relationship between input interfaces and output interfaces of a 4M channel optical switching module of the on-board microwave photon transparent transponder, controlling frequency transformation relationship between input interfaces and output interfaces of a wideband tunable frequency source of the on-board microwave photon transparent transponder, realizing first bandwidth scale microwave photon transparent transponder service of converting radio frequency uplink ultra-wideband communication signals into radio frequency downlink ultra-wideband signals, and converting part of the radio frequency uplink ultra-wideband communication signals into first bandwidth scale ultra-wideband mixed frequency optical signals and outputting the first bandwidth scale ultra-wideband mixed frequency optical signals to the on-board optical domain channelization switch.

[0014] Further, the spaceborne optical domain channelization switch is configured to receive a spaceborne resource configuration instruction issued by a spaceborne integrated management machine, complete instruction analysis, and issue an instruction control code to a 4M channel optical switching module of the spaceborne optical domain channelization switch, configure a path mapping relationship between a second bandwidth scale wideband mixed optical signal output by a 1:M photonic receiving channelization processor and a second bandwidth scale wideband mixed optical signal input by a M:1 photonic transmitting channelization processor, realize second bandwidth scale optical domain channelization switching of the input first bandwidth scale ultrawideband mixed optical signal to the output first bandwidth scale ultrawideband mixed optical signal, and forward part of the second bandwidth scale wideband communication intermediate frequency electrical signal to a spaceborne digital switch.

[0015] Further, the spaceborne microwave photonic transparent transponder includes an M-channel integrated electro-optical conversion assembly, a 2M-channel integrated optical amplification module, a 4M-channel optical switching module, and an M-channel integrated optical-electric conversion assembly.

[0016] The M-channel integrated electro-optical conversion assembly is configured to receive M-path first bandwidth scale radio frequency uplink ultrawideband communication signals, modulate the signals to an optical carrier after radio frequency combining with a local oscillator signal, perform mixing processing on the radio frequency uplink ultrawideband communication signals and the local oscillator signal on the optical carrier, obtain M-path ultrawideband mixed optical signals, and input the signals to the 2M-channel integrated optical amplification module.

[0017] The 2M-channel integrated optical amplification module is configured to receive 2M-path first bandwidth scale ultrawideband mixed optical signals output by multiple M-channel integrated electro-optical conversion assemblies, complete first related processing, and perform parallel amplification on signals obtained after the first related processing, and output 2M-path amplified first bandwidth scale ultrawideband mixed optical signals to the 4M-channel optical switching module; the first related processing includes wavelength division multiplexing, optical amplification, and wavelength division demultiplexing.

[0018] The 4M-channel optical switching module is configured to receive 4M-path first bandwidth scale ultrawideband mixed optical signals output by multiple 2M-channel integrated optical amplification modules, complete path switching according to instruction requirements, realize flexible mapping of 4M-path input interfaces and 4M output interfaces, and output 4M-path first bandwidth scale ultrawideband mixed optical signals to the spaceborne microwave photonic transparent transponder and the spaceborne optical domain channelization switch, respectively.

[0019] The M-channel integrated optical-electric conversion assembly is configured to receive M-path first bandwidth scale ultrawideband mixed optical signals output by the 4M-channel optical switching module, complete second related processing, and output M-path first bandwidth scale radio frequency downlink ultrawideband communication signals; the second related processing includes optical-electric conversion, radio frequency filtering, and radio frequency amplification.

[0020] Further, the spaceborne optical domain channelization switch comprises a 1:M optical receiving channelization processor, a 2M-channel integrated optical amplification module, a 4M-channel optical switching module, an M-channel optoelectronic conversion and intermediate frequency amplification assembly, an M-channel integrated electro-optical conversion assembly, and an M:1 optical transmitting channelization processor.

[0021] The 1:M optical receiving channelization processor is configured to receive a first bandwidth scale super wideband mixed optical signal output by the spaceborne microwave optical transparent transponder, complete frequency conversion processing of M second bandwidth channels in the first bandwidth scale super wideband mixed optical signal by using an optical comb local oscillator signal, output M paths of 1.8 GHz intermediate frequency second bandwidth scale wideband mixed optical signals, and input the M paths of 1.8 GHz intermediate frequency second bandwidth scale wideband mixed optical signals into the 2M-channel integrated optical amplification module.

[0022] The 2M-channel integrated optical amplification module is configured to receive 2M paths of second bandwidth scale super wideband mixed optical signals output by the plurality of 1:M optical receiving channelization processors, complete first related processing, and output 2M paths of amplified wideband mixed optical signals to the 4M-channel optical switching module.

[0023] Each 4M-channel optical switching module is configured to receive 4M paths of second bandwidth scale super wideband mixed optical signals output by the plurality of 2M-channel integrated optical amplification modules, complete path switching according to instruction requirements, realize flexible mapping of 4M input interfaces and 4M output interfaces, output 4M paths of second bandwidth scale wideband mixed optical signals, and send the 4M paths of second bandwidth scale wideband mixed optical signals to the plurality of M-channel optoelectronic conversion and intermediate frequency amplification assemblies.

[0024] The M-channel optoelectronic conversion and intermediate frequency amplification assembly is configured to receive M paths of second bandwidth scale wideband mixed optical signals output by the 4M-channel optical switching module, complete third related processing, output M paths of second bandwidth wideband communication intermediate frequency electrical signals, and send the M paths of second bandwidth wideband communication intermediate frequency electrical signals to the spaceborne optical domain channelization switch or the spaceborne digital switch respectively; the third related processing includes optoelectronic conversion, intermediate frequency amplification, and filtering.

[0025] The M-channel integrated electro-optical conversion assembly is configured to receive second bandwidth scale wideband communication intermediate frequency electrical signals from the spaceborne optical domain channelization switch and the spaceborne digital switch, modulate M paths of second bandwidth scale wideband communication intermediate frequency electrical signals to M paths of laser carriers, output M paths of intermediate frequency modulated optical signals, and send the M paths of intermediate frequency modulated optical signals to the 2M-channel integrated optical amplification module.

[0026] The 2M-channel integrated optical amplification module is configured to receive 2M paths of intermediate frequency modulated optical signals output by the plurality of M-channel integrated electro-optical conversion assemblies, complete first related processing, and output 2M paths of amplified intermediate frequency modulated optical signals to the 4M-channel optical switching module.

[0027] Each 4M channel optical switching module is configured to receive 4M channel intermediate frequency modulated optical signals output by the plurality of 2M channel integrated optical amplification modules, complete path switching according to instruction requirements, realize flexible mapping of 4M input interfaces and 4M output interfaces, output 4M channel intermediate frequency modulated optical signals, and send the 4M channel intermediate frequency modulated optical signals to the plurality of M:1 optical photon emission channelization processors;

[0028] The M:1 optical photon emission channelization processor is configured to receive M channel second bandwidth scale intermediate frequency modulated optical signals output by the 4M channel optical switching module, complete fourth correlation processing, output one first bandwidth scale ultra-wideband mixed frequency optical signal, and input the one first bandwidth scale ultra-wideband mixed frequency optical signal to the satellite-borne microwave optical transparent transponder; the fourth correlation processing includes wavelength division combining, optical filtering, and power compensation.

[0029] Further, the satellite-borne digital switch includes a digital baseband module, a data switching module, and a switching control module.

[0030] In the process of realizing third bandwidth scale subchannel level digital circuit switching services:

[0031] The digital baseband module is configured to receive second bandwidth scale wideband communication intermediate frequency electrical signals output by the satellite-borne optical domain channelization switch, complete digital acquisition and variable bandwidth signal analysis processing, subdivide the second bandwidth wideband communication channel into N third bandwidth scale narrowband subchannels, and send communication signals of the narrowband subchannels to the data switching module; the digital baseband module is also configured to receive communication signals of the narrowband subchannels output by the data switching module, complete variable bandwidth signal synthesis and digital-to-analog conversion, combine the N third bandwidth scale narrowband subchannels into the second bandwidth wideband communication channel, output second bandwidth scale wideband communication intermediate frequency electrical signals, and input the second bandwidth scale wideband communication intermediate frequency electrical signals to the satellite-borne optical domain channelization switch; N is a positive integer.

[0032] The data switching module is configured to receive narrowband subchannel communication signals output by the plurality of digital baseband modules, complete digital domain large-scale high-speed switching processing based on a digital forwarding switching core according to an instruction of the switching control module, and input the narrowband subchannel communication signals to a designated digital baseband module or provide the narrowband subchannel communication signals to a satellite-borne digital switch data packet scale bit level digital packet switching service.

[0033] The switching control module is configured to receive control instructions input by the satellite-borne integrated management and control machine, complete instruction analysis and distribution processing, send the analyzed control instructions to the data switching module and the digital baseband module, and realize integrated management and control and resource management of the satellite-borne digital switch.

[0034] Further, the satellite-borne digital switch includes a digital baseband module, a data switching module, and a switching control module.

[0035] In the process of realizing data packet scale bit level digital packet switching services:

[0036] The digital baseband module is used for receiving the 1.8GHz intermediate frequency, the broadband communication intermediate frequency electrical signal of the second bandwidth scale output by the spaceborne optical domain channelization switch or the narrowband subchannel communication signal provided by the third bandwidth scale subchannel level digital circuit switching service of the spaceborne digital switch, completing the fifth related processing, outputting the communication net load data, and sending the data into the data exchange module; meanwhile, the communication net load data from the data exchange module is received, the sixth related processing is completed, the second bandwidth broadband communication intermediate frequency electrical signal is output to the spaceborne optical domain channelization switch, and the third bandwidth scale narrowband subchannel communication signal is output to the third bandwidth scale subchannel level digital circuit switching service of the spaceborne digital switch; the fifth related processing includes digital acquisition and descrambling, decoding, demodulation; and the sixth related processing includes modulation, coding, scrambling and analog-to-digital conversion;

[0037] The data exchange module is used for receiving the communication net load data output by the plurality of digital baseband modules, completing the packet switching processing based on the packet switching core according to the instruction of the exchange control module, and sending the communication net load data to the specified digital baseband module or the laser inter-satellite link, and is also used for receiving the cross-satellite communication data of the laser inter-satellite link, completing the packet switching processing according to the instruction of the exchange control module, and sending the communication net load data to the specified digital baseband module or the laser inter-satellite link;

[0038] The exchange control module is used for receiving the control instruction input by the spaceborne integrated management and control machine, completing the instruction analysis and distribution processing, sending the analyzed control instruction to the data exchange module and the digital baseband module, and realizing the integrated management and control and resource management of the spaceborne digital switch; the reporting information of the data exchange module and the digital baseband module is collected and sent to the spaceborne integrated management and control machine after being summarized.

[0039] The application further discloses a spaceborne multi-scale mixed broadband switching method, which is suitable for the spaceborne multi-scale mixed broadband switching system.

[0040] The spaceborne integrated management and control machine receives the signaling channel net load data sent by the spaceborne digital switch packet scale digital packet switching service, completes the analysis processing of related signaling and the on-orbit resource management strategy, generates the on-orbit resource configuration instruction, and sends the on-orbit resource configuration instruction to the spaceborne microwave photon transparent transponder, the spaceborne optical domain channelization switch and the spaceborne digital switch; the related signaling includes the common channel signaling, the side channel signaling or the service frequency band common channel signaling.

[0041] The satellite-borne microwave photon transparent transponder receives the on-board resource configuration instruction issued by the satellite-borne integrated management and control machine, completes instruction analysis and issues instruction control codes to the satellite-borne microwave photon transparent transponder, realizes first bandwidth scale microwave photon transparent transponder service of the radio frequency uplink ultra-wideband communication signal to the radio frequency downlink ultra-wideband signal, and transmits part of the radio frequency uplink ultra-wideband communication signal to the satellite-borne optical domain channelization switch in the form of an ultra-wideband mixed frequency optical signal, and receives the ultra-wideband mixed frequency optical signal output by the satellite-borne optical domain channelization switch;

[0042] The satellite-borne optical domain channelization switch receives the on-board resource configuration instruction issued by the satellite-borne integrated management and control machine, completes instruction analysis and issues instruction control codes to the satellite-borne optical domain channelization switch, realizes second bandwidth scale optical domain channelization switching of the input first bandwidth scale ultra-wideband mixed frequency optical signal to the output first bandwidth scale ultra-wideband mixed frequency optical signal, and transmits part of the wideband communication intermediate frequency electrical signal to the satellite-borne digital switch and receives the wideband communication intermediate frequency electrical signal output by the satellite-borne digital switch.

[0043] The satellite-borne digital switch receives the on-board resource configuration instruction issued by the satellite-borne integrated management and control machine, completes instruction analysis, and configures the resource scale of the third bandwidth scale subchannel level digital circuit switching service and the data packet scale bit level digital packet switching service according to the instruction.

[0044] Further, the satellite-borne digital switch receives the on-board resource configuration instruction issued by the satellite-borne integrated management and control machine, completes instruction analysis, and configures the resource scale of the third bandwidth scale subchannel level digital circuit switching service and the data packet scale bit level digital packet switching service according to the instruction.

[0045] In the third bandwidth scale subchannel level digital circuit switching service mode, the satellite-borne digital switch issues instruction control codes to the digital baseband module and the data switching module in the satellite-borne digital switch based on the issued on-board resource configuration instruction, controls the digital baseband to allocate uplink user resources and downlink user resources, controls the data switching module to control the path mapping relationship between the input interface and the output interface, realizes third bandwidth scale subchannel level digital circuit switching of the input second bandwidth wideband communication intermediate frequency electrical signal to the output second bandwidth wideband communication intermediate frequency electrical signal, and realizes third bandwidth scale narrowband subchannel level satellite communication switching service of the radio frequency uplink ultra-wideband communication signal to the radio frequency downlink ultra-wideband signal based on the satellite-borne digital switch, the satellite-borne optical domain channelization switch and the satellite-borne microwave photon transparent transponder; at the same time, the third bandwidth scale narrowband subchannel data requiring smaller scale switching service is provided to the satellite-borne digital switch data packet scale bit level digital packet switching service, and the third bandwidth scale narrowband subchannel data provided by the satellite-borne digital switch data packet scale bit level digital packet switching service is also received and accessed to the satellite-borne digital switch third bandwidth scale subchannel level digital circuit switching service.

[0046] In the data packet scale bit level digital packet exchange service mode, the spaceborne digital switch sends instruction control codes to the data exchange module of the spaceborne digital switch based on the issued on-board resource configuration instructions, configures the routing exchange relationship of the data exchange module, and realizes data packet scale bit level digital packet exchange of input user data to output user data, so as to realize the data packet scale spaceborne communication exchange service of the radio frequency uplink ultra-wideband communication signal to the radio frequency downlink ultra-wideband signal based on the joint of the spaceborne digital switch, the spaceborne optical domain channelization switch and the spaceborne microwave photon transparent transponder.

[0047] Due to the adoption of the above technical solutions, the present application has the following advantages: the present application can be used as an integral spaceborne load solution, supporting the integral satellite to realize high communication capacity, large communication bandwidth, fine granularity exchange and multi-type communication service capability; part of the technology can also be applied alone or in combination to different types of communication satellites, such as the first bandwidth scale (2GHz) microwave photon transparent transponder technology which can be applied to high-throughput satellites with larger beam bandwidth, larger beam scale and higher communication capacity, the second bandwidth scale (500MHz) optical domain channelization exchange technology and the third bandwidth scale (0.58MHz) sub-channel level digital circuit exchange technology which can be applied in combination to digital transparent transponder satellites with larger port bandwidth and smaller exchange bandwidth, and the sub-channel digital circuit exchange technology and the packet exchange technology between sub-channels which can be applied to cross-satellite networking of digital transparent transponder satellites. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0049] Figure 1 a block diagram of a spaceborne multi-scale hybrid broadband exchange system according to an embodiment of the present application;

[0050] Figure 2 a block diagram of another spaceborne multi-scale hybrid broadband exchange system according to an embodiment of the present application;

[0051] Figure 3 a design and implementation block diagram of a spaceborne microwave photon transparent transponder according to an embodiment of the present application;

[0052] Figure 4 a design and implementation block diagram of a spaceborne optical domain channelization switch according to an embodiment of the present application;

[0053] Figure 5 a design and implementation block diagram of a spaceborne digital switch according to an embodiment of the present application. DETAILED DESCRIPTION

[0054] The application will be further described with reference to the drawings and embodiments, and the described embodiments are only part of the embodiments of the application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art shall fall within the scope of protection of the embodiments of the application.

[0055] The on-board broadband switching architecture provided by the application, which is combined with microwave, photon, digital, software and other multi-domain joint processing and multi-scale mixed switching of 2GHz, 500MHz, 0.58MHz and data packets, provides 2GHz scale ultra-wideband communication services based on a microwave photon transparent transponder; provides 500MHz scale broadband communication services based on the microwave photon transparent transponder and an optical domain channelized switch; provides 0.58MHz scale sub-channel level communication services based on the microwave photon transparent transponder, the optical domain channelized switch and a flexible digital channelized switch; on this basis, based on on-board processing and a packet switch, communication services of a data packet scale are provided to support on-board one-hop communication and cross-satellite communication collaborative networking; based on the on-board processing and the packet switch, two functional units of on-board resource management and control complete analysis and execution of co-routed signaling, on-the-fly signaling or service band co-routed signaling, complete communication user management and on-board resource management and control; and can support satellite communication payload systems to simultaneously realize high communication capacity, large port bandwidth, fine switching scale, flexible control and multi-satellite networking capabilities.

[0056] Reference Figure 1 The application provides an embodiment of a spaceborne multi-scale mixed broadband switching system, which comprises a spaceborne microwave photon transparent transponder, a spaceborne optical domain channelized switch, a spaceborne digital switch and a spaceborne integrated management and control machine;

[0057] The spaceborne microwave photon transparent transponder is configured to receive a radio frequency uplink ultra-wideband communication signal of a first bandwidth scale and modulate the radio frequency uplink ultra-wideband communication signal and a local oscillator signal onto an optical carrier, complete frequency mixing of the radio frequency uplink ultra-wideband communication signal and the local oscillator signal on the optical carrier, output an ultra-wideband mixed frequency optical signal, perform optical gain compensation and optical switching on the ultra-wideband mixed frequency optical signal, perform path switching on the ultra-wideband mixed frequency optical signal, perform first radio frequency processing on the gated ultra-wideband mixed frequency optical signal, and output a radio frequency downlink ultra-wideband communication signal of the first bandwidth scale; meanwhile, part of the ultra-wideband mixed frequency optical signal is extracted as needed and input to the spaceborne optical domain channelized switch for broadband channel level communication switching processing of a second bandwidth scale, and the spaceborne optical domain channelized switch outputs an ultra-wideband mixed frequency optical signal, which is subjected to second radio frequency processing and output as a radio frequency downlink ultra-wideband communication signal of the first bandwidth scale; the first radio frequency processing comprises photoelectric conversion, radio frequency amplification and filtering; the second radio frequency processing comprises optical switching, photoelectric conversion and radio frequency amplification;

[0058] The satellite-borne optical domain channelization switch is used for receiving the ultra-wideband mixed light signal output by the satellite-borne microwave photon transparent transponder, performing channelization frequency conversion on the ultra-wideband mixed light signal of the first bandwidth scale by using a photon receiving channelization processor, outputting M paths of wideband communication light signals of the second bandwidth scale and performing optical gain compensation and optical switching, performing path switching on the wideband communication light signals, performing third radio frequency processing on the gated wideband communication light signals, outputting wideband communication intermediate frequency electrical signals of the second bandwidth scale and inputting the signals to the satellite-borne digital switch or the satellite-borne optical domain channelization switch; the satellite-borne optical domain channelization switch is also used for receiving the second bandwidth scale communication intermediate frequency electrical signals output by the satellite-borne digital switch or the satellite-borne optical domain channelization switch and modulating the signals and the local oscillator signals to optical carriers, completing the mixing of the wideband communication intermediate frequency electrical signals and the local oscillator signals on the optical carriers, outputting wideband communication light signals and inputting the signals to the optical gain compensation and optical switching for path switching, and inputting each group of M paths of second bandwidth scale communication light signals to a photon transmitting channelization processor to output one path of ultra-wideband mixed light signals of the first bandwidth scale and input the signals to the satellite-borne microwave photon transparent transponder; the third radio frequency processing includes photoelectric conversion, intermediate frequency amplification and filtering; M is a positive integer;

[0059] The satellite-borne digital switch is used for realizing third bandwidth scale sub-channel level digital circuit switching services or data packet scale bit level digital packet switching services.

[0060] The satellite-borne integrated management and control machine is used for receiving the signaling channel net load data output by the satellite-borne digital switch data packet scale bit level digital packet switching service, completing the analysis and processing of common signaling, associated signaling or service frequency band common signaling and generating management and control instructions to be sent to the satellite-borne microwave photon transparent transponder, the satellite-borne optical domain channelization switch and the satellite-borne digital switch, so as to realize the integrated management and control of the satellite-borne communication switching equipment based on the unified on-board control.

[0061] The application can perform communication switching of four bandwidth scales, i.e., the first bandwidth scale, the second bandwidth scale, the third bandwidth scale and the data packet scale.

[0062] In the embodiment of the present application, the spaceborne microwave photon transparent transponder is used for receiving the spaceborne resource configuration instruction issued by the spaceborne integrated management machine, completing instruction analysis and issuing instruction control code to the spaceborne microwave photon transparent transponder, controlling the path mapping relationship between the input interface and the output interface of the 4M channel optical switching module of the spaceborne microwave photon transparent transponder, controlling the frequency transformation relationship between the input interface and the output interface of the broadband tunable frequency source of the spaceborne microwave photon transparent transponder, realizing the first bandwidth scale microwave photon transparent forwarding service of the radio frequency uplink ultra-wideband communication signal to the radio frequency downlink ultra-wideband signal, and forwarding part of the radio frequency uplink ultra-wideband communication signal to the spaceborne optical domain channelization switch in the form of the first bandwidth scale ultra-wideband mixed frequency optical signal, and is also used for receiving the first bandwidth scale ultra-wideband mixed frequency optical signal output by the spaceborne optical domain channelization switch.

[0063] When M=4, the spaceborne microwave photon transparent transponder is as shown in the above. Figure 3

[0064] The spaceborne microwave photon transparent transponder is divided into 4-channel integrated electro-optical conversion components, 8-channel integrated optical amplification modules, 16-channel optical switching modules, 4-channel integrated optical-electric conversion components and other standardized components or modules. According to this, batch design, production, debugging and assembly from components, modules to single machines can be carried out, the product development efficiency is greatly improved, and the spaceborne transparent forwarding capability of 6~60GHz working frequency band, 2GHz port bandwidth and 16×16~256×256 switching scale can be provided as needed.

[0065] In the above embodiment, the spaceborne microwave photon transparent transponder utilizes the intrinsic advantages of high frequency, large bandwidth, high parallelism and small size of light waves to realize greater port bandwidth and greater switching scale at the cost of smaller volume, weight and power consumption; meanwhile, the 16-channel optical switching module is used as a basic functional unit, and a non-blocking optical switching network in a cascade structure can be constructed as needed to realize flexible mapping of N input interfaces and M output interfaces. The spaceborne optical domain channelization switch utilizes the intrinsic advantages of high frequency, large bandwidth, high parallelism and small size of light waves to further subdivide the communication switching capability in the 2GHz switching bandwidth of the spaceborne microwave photon transparent transponder to form a 500MHz scale communication switching capability, and to make up for the bandwidth difference between the 2GHz port of the spaceborne microwave photon transparent transponder and the 500MHz port of the spaceborne digital switch; meanwhile, the 16-channel optical switching module is used as a basic functional unit, and a non-blocking optical switching network in a cascade structure can be constructed as needed to realize flexible mapping of n input interfaces and n output interfaces, n being a positive integer.

[0066] ​In the embodiment of the present application, the satellite-borne optical domain channelization switch is used for receiving the satellite resource configuration instruction issued by the satellite-borne integrated management controller, completing instruction analysis and issuing instruction control code to the 4M channel optical switching module of the satellite-borne optical domain channelization switch, configuring the path mapping relationship between the second bandwidth scale wideband mixed frequency optical signal output by the 1:M photonic receiving channelization processor and the second bandwidth scale wideband mixed frequency optical signal input by the M:1 photonic transmitting channelization processor, realizing the second bandwidth scale optical domain channelization switching of the input first bandwidth scale ultra-wideband mixed frequency optical signal to the output first bandwidth scale ultra-wideband mixed frequency optical signal, and forwarding part of the second bandwidth scale wideband communication intermediate frequency electrical signal to the satellite-borne digital switch, and is also used for receiving the second bandwidth scale wideband communication intermediate frequency electrical signal output by the satellite-borne digital switch.

[0067] When M=4, the satellite-borne optical domain channelization switch is as shown in the above. Figure 4

[0068] In the embodiment of the present application, the satellite-borne microwave photonic transparent transponder includes an M-channel integrated electro-optical conversion assembly, a 2M-channel integrated optical amplification module, a 4M-channel optical switching module and an M-channel integrated photoelectric conversion assembly.

[0069] The M-channel integrated electro-optical conversion assembly is used for receiving the M-path first bandwidth scale radio frequency uplink ultra-wideband communication signal, modulating the radio frequency uplink ultra-wideband communication signal and the local oscillator signal to the optical carrier after radio frequency combining, performing mixed frequency processing on the radio frequency uplink ultra-wideband communication signal and the local oscillator signal on the optical carrier, obtaining the M-path ultra-wideband mixed frequency optical signal and inputting the M-path ultra-wideband mixed frequency optical signal to the 2M-channel integrated optical amplification module.

[0070] The 2M-channel integrated optical amplification module is used for receiving the 2M-path first bandwidth scale ultra-wideband mixed frequency optical signal output by the plurality of M-channel integrated electro-optical conversion assemblies, completing first correlation processing, and performing parallel amplification on the signal obtained after the first correlation processing, and outputting the 2M-path amplified first bandwidth scale ultra-wideband mixed frequency optical signal to the 4M-channel optical switching module; the first correlation processing includes wavelength division multiplexing, optical amplification and wavelength division demultiplexing.

[0071] The 4M-channel optical switching module is used for receiving the 4M-path first bandwidth scale ultra-wideband mixed frequency optical signal output by the plurality of 2M-channel integrated optical amplification modules, completing path switching according to the instruction requirement, realizing flexible mapping of the 4M-path input interface and the 4M-path output interface, and outputting the 4M-path first bandwidth scale ultra-wideband mixed frequency optical signal to the satellite-borne microwave photonic transparent transponder and the satellite-borne optical domain channelization switch respectively.

[0072] ​The M-channel integrated photoelectric conversion assembly is used for receiving M-path first bandwidth scale super wideband mixed light signals output by a 4M-channel optical switching module, completing second correlation processing, and outputting M-path first bandwidth scale radio frequency downlink super wideband communication signals; the second correlation processing includes photoelectric conversion, radio frequency filtering, and radio frequency amplification.

[0073] In the embodiment of the application, the satellite-borne optical domain channelization switch comprises a 1:M photonic receiving channelization processor, a 2M-channel integrated optical amplification module, a 4M-channel optical switching module, an M-channel photoelectric conversion and intermediate frequency amplification assembly, an M-channel integrated electro-optical conversion assembly, and an M:1 photonic transmitting channelization processor.

[0074] The 1:M photonic receiving channelization processor is used for receiving first bandwidth scale super wideband mixed light signals output by a satellite-borne microwave photonic transparent transponder, completing frequency conversion processing of M second bandwidth channels in the first bandwidth scale super wideband mixed light signals by using an optical comb local oscillator signal, outputting M-path 1.8 GHz intermediate frequency second bandwidth scale wideband mixed light signals, and inputting the M-path 1.8 GHz intermediate frequency second bandwidth scale wideband mixed light signals to the 2M-channel integrated optical amplification module.

[0075] The 2M-channel integrated optical amplification module is used for receiving 2M-path second bandwidth scale super wideband mixed light signals output by a plurality of 1:M photonic receiving channelization processors, completing first correlation processing, and outputting 2M-path amplified wideband mixed light signals to the 4M-channel optical switching module.

[0076] Each 4M-channel optical switching module is used for receiving 4M-path second bandwidth scale super wideband mixed light signals output by a plurality of 2M-channel integrated optical amplification modules, completing path switching according to instruction requirements, realizing flexible mapping of 4M-path input interfaces and 4M output interfaces, outputting 4M-path second bandwidth scale wideband mixed light signals, and sending the 4M-path second bandwidth scale wideband mixed light signals to a plurality of M-channel photoelectric conversion and intermediate frequency amplification assemblies.

[0077] The M-channel photoelectric conversion and intermediate frequency amplification assembly is used for receiving M-path second bandwidth scale wideband mixed light signals output by the 4M-channel optical switching module, completing third correlation processing, outputting M-path second bandwidth scale wideband communication intermediate frequency electrical signals, and sending the M-path second bandwidth scale wideband communication intermediate frequency electrical signals to the satellite-borne optical domain channelization switch or the satellite-borne digital switch; the third correlation processing includes photoelectric conversion, intermediate frequency amplification, and filtering.

[0078] The M-channel integrated electro-optical conversion assembly is used for receiving second bandwidth scale wideband communication intermediate frequency electrical signals from the satellite-borne optical domain channelization switch and the satellite-borne digital switch, modulating M-path second bandwidth scale wideband communication intermediate frequency electrical signals to M-path laser carriers, outputting M-path intermediate frequency modulated light signals, and sending the M-path intermediate frequency modulated light signals to the 2M-channel integrated optical amplification module.

[0079] 2M channel integrated optical amplification module, used for receiving 2M channel integrated optical amplification module output 2M path intermediate frequency modulation optical signal, complete the first correlation processing, output 2M path amplified intermediate frequency modulation optical signal to 4M channel optical switching module;

[0080] Each 4M channel optical switching module, used for receiving 2M channel integrated optical amplification module output 4M path intermediate frequency modulation optical signal, according to the instruction requirements complete path switching, realize 4M path input interface and 4M output interface flexible mapping, output 4M path intermediate frequency modulation optical signal and send it to multiple M:1 optical photon emission channelization processor;

[0081] M:1 optical photon emission channelization processor, used for receiving 4M channel optical switching module output M path second bandwidth scale intermediate frequency modulation optical signal, complete the fourth correlation processing, output a first bandwidth scale of ultra-wideband mixed light signal and input it to the satellite-borne microwave photon transparent transponder; The fourth correlation processing includes wavelength division combining, optical filtering and power compensation.

[0082] In the embodiment of the application, the satellite-borne digital switch is specifically used for:

[0083] In the third bandwidth scale subchannel level digital circuit switching service mode, the second bandwidth scale communication intermediate frequency electrical signal output by the satellite-borne optical domain channelization switch is received, analog-to-digital conversion is completed, the fourth radio frequency processing is completed in the digital domain, and the second bandwidth scale communication intermediate frequency electrical signal is output to the satellite-borne optical domain channelization switch, or the third bandwidth scale subchannel sampling data is output and provided to the satellite-borne digital switch packet scale bit level digital packet switching service; The fourth radio frequency processing includes digital channel analysis, switching and synthesis.

[0084] In the data packet scale bit level digital packet switching service mode, the second bandwidth scale communication intermediate frequency electrical signal output by the satellite-borne optical domain channelization switch or the third bandwidth scale subchannel sampling data output by the satellite-borne digital switch third bandwidth scale subchannel level digital circuit switching service is received, the fifth radio frequency processing is completed in the digital domain, the data packet switching between different ports or subchannels is realized, the second bandwidth scale communication intermediate frequency electrical signal is output to the satellite-borne optical domain channelization switch, or the third bandwidth scale subchannel sampling data is output and provided to the satellite-borne digital switch third bandwidth scale subchannel level digital circuit switching service, and the signaling channel net load data exchange is also carried out with the satellite-borne integrated management and control machine; The fifth radio frequency processing includes scrambling and descrambling, encoding and decoding, modulation and demodulation, and packet switching.

[0085] In the embodiment of the application, the satellite-borne digital switch includes a digital baseband module, a data switching module and a switching control module.

[0086] In the process of realizing the third bandwidth scale subchannel level digital circuit switching service:

[0087] a digital baseband module, configured to receive a second bandwidth scale broadband communication intermediate frequency electrical signal output by the spaceborne optical domain channelized switch, complete digital acquisition and variable bandwidth signal analysis processing, subdivide the second bandwidth broadband communication channel into N third bandwidth scale narrowband sub-channels, and send the communication signals of each narrowband sub-channel to the data switching module; and further configured to receive the communication signals of each narrowband sub-channel output by the data switching module, complete variable bandwidth signal synthesis and digital-to-analog conversion, combine the N third bandwidth scale narrowband sub-channels into a second bandwidth broadband communication channel, output a second bandwidth broadband communication intermediate frequency electrical signal, and input the second bandwidth broadband communication intermediate frequency electrical signal to the spaceborne optical domain channelized switch; N is a positive integer;

[0088] a data switching module, configured to receive narrowband sub-channel communication signals output by a plurality of digital baseband modules, complete digital domain large-scale high-speed switching processing based on a digital forwarding switching core according to an instruction of a switching control module, and input each narrowband sub-channel communication signal to a specified digital baseband module or provide the narrowband sub-channel communication signal to a spaceborne digital switch data packet scale bit-level digital packet switching service;

[0089] a switching control module, configured to receive a control instruction input by a spaceborne integrated management and control machine, complete instruction analysis and distribution processing, send the analyzed control instruction to the data switching module and the digital baseband module, and implement integrated management and control and resource management of the spaceborne digital switch.

[0090] In the embodiment, the spaceborne digital switch includes the digital baseband module, the data switching module, and the switching control module.

[0091] In the process of implementing the data packet scale bit-level digital packet switching service:

[0092] the digital baseband module is configured to receive a 1.8 GHz intermediate frequency, second bandwidth scale broadband communication intermediate frequency electrical signal output by the spaceborne optical domain channelized switch or a narrowband sub-channel communication signal provided by a third bandwidth scale sub-channel level digital circuit switching service of the spaceborne digital switch, complete fifth related processing, output communication payload data, and send the communication payload data to the data switching module; and simultaneously receive the communication payload data from the data switching module, complete sixth related processing, output a second bandwidth broadband communication intermediate frequency electrical signal to the spaceborne optical domain channelized switch, and output a third bandwidth scale narrowband sub-channel communication signal to the third bandwidth scale sub-channel level digital circuit switching service of the spaceborne digital switch; the fifth related processing includes digital acquisition and descrambling, decoding, and demodulation; and the sixth related processing includes modulation, encoding, scrambling, and analog-to-digital conversion;

[0093] The data exchange module is configured to receive communication payload data output by the plurality of digital baseband modules, complete packet switching processing based on a packet switching core according to an instruction of the exchange control module, and send the communication payload data to a designated digital baseband module or a laser inter-satellite link, and is further configured to receive cross-satellite communication data of the laser inter-satellite link, complete packet switching processing according to the instruction of the exchange control module, and send the communication payload data to a designated digital baseband module or a laser inter-satellite link.

[0094] The exchange control module is configured to receive a control instruction input by the on-board integrated management and control machine, complete instruction analysis and distribution processing, send the analyzed control instruction to the data exchange module and the digital baseband module, and realize integrated management and control and resource management of the on-board digital switch.

[0095] The on-board microwave photon transparent transponder, the on-board optical domain channelization switch, the on-board digital switch and other on-board communication switching devices regularly report device telemetry information to the on-board integrated management and control machine on-board resource management module, to realize an on-board resource management and control closed loop.

[0096] The application further provides an on-board multi-scale hybrid broadband switching method, which is suitable for the on-board multi-scale hybrid broadband switching system described in the above embodiments, and includes the following steps:

[0097] The on-board integrated management and control machine receives signaling channel payload data sent by the on-board digital switch data packet scale bit-level digital packet switching service, completes related signaling analysis processing and on-board resource management and control strategies, generates on-board resource configuration instructions and sends the on-board resource configuration instructions to the on-board microwave photon transparent transponder, the on-board optical domain channelization switch and the on-board digital switch; the related signaling includes common channel signaling, on-channel signaling or service frequency band common channel signaling.

[0098] The on-board microwave photon transparent transponder receives the on-board resource configuration instructions sent by the on-board integrated management and control machine, completes instruction analysis and sends instruction control codes to the on-board microwave photon transparent transponder, realizes first bandwidth scale microwave photon transparent forwarding service of the radio frequency uplink ultra-wideband communication signal to the radio frequency downlink ultra-wideband signal, forwards part of the radio frequency uplink ultra-wideband communication signal to the on-board optical domain channelization switch in the form of an ultra-wideband mixed frequency optical signal, and receives the ultra-wideband mixed frequency optical signal output by the on-board optical domain channelization switch.

[0099] The spaceborne optical domain channelization switch receives a spaceborne resource configuration instruction issued by the spaceborne integrated management and control machine, completes instruction analysis, and issues instruction control codes to the spaceborne optical domain channelization switch, so as to realize second bandwidth scale optical domain channelization switching of input first bandwidth scale ultra-wideband mixed optical signals to output first bandwidth scale ultra-wideband mixed optical signals, and to forward part of wideband communication intermediate frequency electrical signals to the spaceborne digital switch, and receive wideband communication intermediate frequency electrical signals output by the spaceborne digital switch;

[0100] The spaceborne digital switch receives a spaceborne resource configuration instruction issued by the spaceborne integrated management and control machine, completes instruction analysis, and configures resource scales of third bandwidth scale sub-channel level digital circuit switching services and data packet scale bit level digital packet switching services according to the instruction.

[0101] In the embodiment of the application, the spaceborne digital switch receives a spaceborne resource configuration instruction issued by the spaceborne integrated management and control machine, completes instruction analysis, and configures resource scales of third bandwidth scale sub-channel level digital circuit switching services and data packet scale bit level digital packet switching services according to the instruction, which includes:

[0102] In the third bandwidth scale sub-channel level digital circuit switching service mode, the spaceborne digital switch issues instruction control codes to digital baseband modules and data switching modules in the spaceborne digital switch based on the issued spaceborne resource configuration instruction, controls the digital baseband to allocate uplink user resources and downlink user resources, controls the data switching module to control path mapping relationships between input interfaces and output interfaces, realizes third bandwidth scale sub-channel level digital circuit switching of input second bandwidth wideband communication intermediate frequency electrical signals to output second bandwidth wideband communication intermediate frequency electrical signals, and realizes third bandwidth scale narrowband sub-channel level spaceborne communication switching services of radio frequency uplink ultra-wideband communication signals to radio frequency downlink ultra-wideband signals based on the spaceborne digital switch, the spaceborne optical domain channelization switch and the spaceborne microwave photon transparent transponder. Meanwhile, third bandwidth scale narrowband sub-channel data requiring smaller scale switching services are provided to the spaceborne digital switch data packet scale bit level digital packet switching service, and third bandwidth scale narrowband sub-channel data provided by the spaceborne digital switch data packet scale bit level digital packet switching service are received and accessed to the spaceborne digital switch third bandwidth scale sub-channel level digital circuit switching service.

[0103] In the data packet scale bit level digital packet switching service mode, the spaceborne digital switch issues instruction control codes to the data switching module of the spaceborne digital switch based on the issued spaceborne resource configuration instruction, configures routing switching relationships of the data switching module, realizes data packet scale bit level digital packet switching of input user data to output user data, and realizes data packet scale spaceborne communication switching services of radio frequency uplink ultra-wideband communication signals to radio frequency downlink ultra-wideband signals based on the spaceborne digital switch, the spaceborne optical domain channelization switch and the spaceborne microwave photon transparent transponder.

[0104] For the sake of understanding, a more specific embodiment is also provided by the present application:

[0105] The application provides a microwave, photon, digital, software and other multi-domain combined processing and communication beam, wideband channel, narrowband subchannel, communication data packet and other multi-scale mixed exchange satellite broadband switching architecture implementation method. The implementation method of each main link is introduced as follows: (1) microwave photon transparent forwarding adopts microwave photon technology system, utilizes the intrinsic advantages of high frequency (hundred THz level, 3-4 orders of magnitude higher than traditional microwave), large bandwidth (THz level, 3-4 orders of magnitude higher than traditional microwave), high parallelism (different wavelength lasers can be co-path transmission), small size (wavelength is in the order of μm, the intrinsic size of the device is 3-4 orders of magnitude smaller than traditional microwave devices) and other intrinsic advantages, modulates the received radio frequency signal and the local oscillator signal to the optical carrier through radio frequency electro-optical conversion and local oscillator mixing, completes the mixing of the received radio frequency signal and the local oscillator signal at a higher frequency, improves the working bandwidth and instantaneous bandwidth, and improves the intermodulation characteristic; a plurality of frequency conversion channels using different optical carriers are amplified in parallel at the same time through optical wave division and gain compensation, the volume and weight cost of the amplification link is reduced; N non-blocking optical switching and M non-blocking optical switching are used to realize the hinging of N receiving channels and M transmitting channels, the small size advantage of optical switching is used, a 16x16 optical switching matrix is used as a basic functional unit, NXM optical switching is realized with smaller volume and weight cost, and then the signal is converted into a radio frequency signal through optical-electric conversion and radio frequency amplification and is filtered and amplified to send a communication transmission beam, the mapping and transmission of the wideband communication satellite user beam and the feed beam are supported, the beam level user uplink is returned to the transparent forwarding of the feed downlink and the feed uplink is forwardly transparently forwarded to the user downlink, and part of the beam channel and the optical domain channelized switching hinge are extracted as needed.(2) The selected 2GHz bandwidth beam channel is received by the optical domain channelized switching and microwave photon transparent forwarding. An optical frequency comb is used to provide multiple frequency conversion local oscillators for mixing with the 2GHz bandwidth beam channel, and 4 500MHz bandwidth optical domain channels are output. Then, multiple frequency conversion channels using different optical carriers are amplified in parallel by optical wavelength division and gain compensation. Subsequently, the received beam bandwidth is separated and mapped to the digital processing port bandwidth by N×N non-blocking optical switching based on a 16×16 optical switching matrix. Finally, the optical channel and digital channel signals are matched by photoelectric conversion and intermediate frequency amplification, and the 500MHz baseband signals from the receiving digital processing or receiving optical channelized switching are sent to the digital processing or transmitted optical channelized switching. The 500MHz baseband signals and local oscillator signals are modulated onto optical carriers by intermediate frequency electro-optical conversion and local oscillator mixing, and the mixing of the digital baseband signals and local oscillator signals is completed at a higher frequency. Then, multiple frequency conversion channels using different optical carriers are amplified in parallel by optical wavelength division and gain compensation. Subsequently, the 500MHz baseband signals are mapped to the 2GHz bandwidth transmit beam channel by N×N non-blocking optical switching based on a 16×16 optical switching matrix. The four 500MHz channels are integrated, filtered, and amplified into a 2GHz wideband channel by a photonic transmit channelizer, and the communication transmit beam is sent. The wideband channel switching at the digital processing port level is implemented, and part of the wideband channels and sub-channels are extracted for digital circuit switching, bit-level digital packet switching, and hinging; (3) The 500MHz analog signals are converted into digital signals by analog-to-digital conversion at the sub-channel level digital circuit switching. In the digital domain, the 500MHz wideband channel is subdivided into 768 0.58MHz narrowband sub-channels by high-order digital filtering. Then, the MHz-level sub-channel switching within the digital processing port is implemented by digital channel switching and integration technology. The 500MHz digital signals are converted into analog signals by digital-to-analog conversion for optical channel switching, and part of the digital sub-channels are extracted for bit-level digital packet switching and hinging; (4) The bit-level digital packet switching completes the modulation and demodulation, encoding and decoding of the wideband channels and narrowband sub-channels. The exchange and processing between the wideband channel communication data from the optical domain channelized switching, the narrowband sub-channel communication data from the digital circuit switching, and the inter-satellite laser link inter-satellite high-speed communication data are completed in the data domain. The user access signaling and ground operation and control instructions are sent to the on-board management and control. (5) The on-board management and control software is used to complete the analysis and execution of the common signaling, the on-the-way signaling, or the service frequency band common signaling. The communication user management and on-board resource management and control are completed, and the integration and control of the four-layer switching of the communication beam, the wideband channel, the narrowband sub-channel, and the data packet are realized.

[0106] The application provides a satellite-borne multi-scale hybrid broadband switching device implementation method, which divides the satellite-borne broadband switching device into five functional units of microwave photon transparent transponder, optical domain channelization switch, flexible digital channelization switch, on-board processing and packet switch, and on-board resource management and control, and four physical units of microwave photon transparent transponder, optical domain channelization switch, on-board digital switch, and on-board management and control. The microwave photon transparent transponder provides ultra-wideband communication switching service with a switching scale of beam bandwidth, and is divided into standardized components or modules of 4-channel integrated electro-optical conversion assembly, 8-channel integrated optical amplification module, 16-channel optical switching module, and 4-channel integrated optical-electric conversion assembly, and can provide product capacity of different scales as needed. The optical domain channelization switch provides broadband communication switching service at the intermediate frequency digital port level, and is divided into standardized components or modules of 1:4 photon receiving channelization processor, 8-channel integrated optical amplification module, 16-channel optical switching module, 4-channel optical-electric conversion and intermediate frequency amplification assembly, 4-channel integrated electro-optical conversion assembly, and 4:1 photon emission channelization processor in physical implementation, and the satellite-borne optical domain channelization switch with a port bandwidth of 2GHz, a switching granularity of 500MHz, and a switching scale of 16x16 is constructed by using the standardized functional components / modules, and the number and scale of the satellite-borne optical domain channelization switch are confirmed according to system requirements on the basis. The flexible digital channelization switch provides sub-channel level communication switching service, the on-board processing and packet switch provides data packet scale communication service, and both share a digital hardware platform, which is divided into common links of digital baseband, data switching, and switching control, and the digital switching capacity is defined by using software reconfiguration, so that the digital hardware platform is designed in a unified type, and software configuration is performed as needed, and the digital switching capacity is defined by using software reconfiguration. Based on the two functional units of on-board processing and packet switch and on-board resource management and control, the analysis and execution of common channel signaling, on-channel signaling or service frequency band common channel signaling are completed, and communication user management and on-board resource management and control are completed.

[0107] The broadband switching architecture on satellite provided by the application is based on microwave photon transparent transponder to provide 2GHz scale ultra-wideband communication service; based on microwave photon transparent transponder and optical domain channelization switch to provide 500MHz scale broadband communication service; based on microwave photon transparent transponder, optical domain channelization switch and flexible digital channelization switch to provide 0.58MHz scale sub-channel level communication service; on this basis, based on on-satellite processing and packet switch to provide data packet scale communication service, support on-satellite one-hop communication and cross-satellite communication collaborative networking; based on on-satellite processing and packet switch, on-satellite resource management and control and other two functional units to complete analysis and execution of common channel signaling, on-channel signaling or service band common channel signaling, complete communication user management and on-satellite resource management and control; can support satellite communication payload system to realize high communication capacity, large port bandwidth, fine switching scale, flexible control, multi-satellite networking and other capabilities at the same time.

[0108] The product design and implementation method of the satellite-borne microwave photon transparent transponder provided by the application divides the microwave photon transparent transponder into 4-channel integrated electro-optical conversion components, 8-channel integrated optical amplification modules, 16-channel optical switching modules, 4-channel integrated optical-electric conversion components and other standardized components or modules, which can be used for batch design, production, debugging and assembly from components, modules to single machines, greatly improving product development efficiency, and providing on-satellite transparent forwarding capability with working frequency band of 6~60GHz, port bandwidth of 2GHz and switching scale of 16×16~256×256 as needed.

[0109] The product design and implementation method of the satellite-borne microwave photon transparent transponder provided by the application divides the microwave photon transparent transponder into 4-channel integrated electro-optical conversion components, 8-channel integrated optical amplification modules, 16-channel optical switching modules, 4-channel integrated optical-electric conversion components and other standardized components or modules, which can be used for batch design, production, debugging and assembly from components, modules to single machines, greatly improving product development efficiency, and providing on-satellite transparent forwarding capability with working frequency band of 6~60GHz, port bandwidth of 2GHz and switching scale of 16×16~256×256 as needed.

[0110] The satellite-borne digital switch product design and implementation method divides the digital switch into common links such as digital baseband, data exchange, exchange control, and defines the digital switching capability by using software reconstruction, thereby designing a digital hardware platform, and performing software configuration as needed, to realize 0.58MHz scale sub-channel level digital circuit switching services or data packet scale bit level digital packet switching services. For 0.58MHz scale sub-channel level digital circuit switching services, variable bandwidth signal analysis and channel synthesis software is loaded on the corresponding digital baseband, 500MHz wideband channel is subdivided into 768 0.58MHz narrowband sub-channels by using high-order digital filtering, digital forwarding switching software is loaded on the data exchange, and the reconstruction process and exchange process are controlled on the digital exchange control. For data packet scale bit level digital packet switching services, modulation and demodulation and coding and decoding software is loaded on the corresponding digital baseband, packet switching software is loaded on the data exchange, and the reconstruction process and exchange process are controlled on the digital exchange control. The two types of switching functions perform sub-channel level data exchange on the data exchange, support cross-satellite operation of digital forwarding services, extraction and analysis processing of signaling with the same channel as the service frequency band, and other services.

[0111] Figure 1 In the method, the satellite-borne multi-scale hybrid broadband switching architecture has five parts of 2GHz scale microwave photonic transparent forwarding, 500MHz scale microwave photonic channelization switching, 0.58MHz scale sub-channel level digital circuit switching, data packet scale bit level digital packet switching, and on-satellite management and control. The implementation methods of the main links are introduced as follows.

[0112] (1) Microwave photonic transparent transponder is composed of RF-E / O conversion and LO mixing, optical gain compensation, NxN non-blocking optical switching, MxM non-blocking optical switching, O-E conversion and RF amplification, adopts microwave photonics technology system, uses intrinsic advantages of high frequency (hundred THz level, 3-4 orders of magnitude higher than traditional microwave), large bandwidth (THz level, 3-4 orders of magnitude higher than traditional microwave), high parallelism (different wavelength lasers can be co-path transmitted), small size (wavelength is in the order of μm, intrinsic size is 3-4 orders of magnitude smaller than traditional microwave devices), etc., through RF-E / O conversion and LO mixing, the received RF signal and the LO signal are modulated onto the optical carrier, the mixing of the received RF signal and the LO signal is completed at a higher frequency, the working bandwidth and the instantaneous bandwidth are improved, and the intermodulation characteristic is improved; through optical wavelength division and gain compensation, multiple frequency conversion channels using different optical carriers are amplified simultaneously in parallel, reducing the volume and weight cost of the amplification link; through NxN non-blocking optical switching and MxM non-blocking optical switching, N receiving channels and M transmitting channels are hinged, using the small size advantage of optical switching, taking 16x16 optical switching matrix as the basic functional unit, NXM optical switching is realized with smaller volume and weight cost, and then using O-E conversion and RF amplification, the optical signal is converted into RF signal and filtered and amplified, and then sent to the communication transmission beam, supporting the mapping and transmission of wideband communication satellite user beams and feeder beams, realizing beam-level user uplink to feeder downlink backward transparent transponder and feeder uplink to user downlink forward transparent transponder, and extracting part of the beam channels and optical domain channelized switching hinges as needed; the maximum port bandwidth is 2GHz, NXM backward transparent transponder and port bandwidth is 2GHz, MxN forward transparent transponder, and part of the 2GHz channels and 500MHz scale microwave photonics channelized switching part of the hinges are extracted as needed

[0113] (2) The optical channel switching is composed of a photon receiving channelization processor, optical gain compensation, n x n non-blocking optical switching, photoelectric conversion and intermediate frequency amplification, intermediate frequency electro-optical conversion and local oscillator mixing, a photon transmitting channelization processor, etc. The selected 2GHz bandwidth beam channel is received by the microwave photon transparent repeater. A plurality of variable frequency local oscillators and the 2GHz bandwidth beam channel are mixed by using an optical frequency comb to output four 500MHz bandwidth optical channels. Then, the variable channels using different optical carriers are amplified in parallel by optical wavelength division and gain compensation. Subsequently, the 16 x 16 optical switching matrix is used as a basic functional unit to realize the separation and mapping of the received beam bandwidth to the digital processing port bandwidth. Finally, the optical channel and the digital channel are matched by photoelectric conversion and intermediate frequency amplification, and the matched signals are sent to the digital processing or the transmitting optical channelization switching. The 500MHz baseband signal sent by the receiving digital processing or the receiving optical channelization switching is modulated onto an optical carrier by intermediate frequency electro-optical conversion and local oscillator mixing. The mixing of the 500MHz baseband signal and the local oscillator signal is completed at a higher frequency. Then, the variable channels using different optical carriers are amplified in parallel by optical wavelength division and gain compensation. Subsequently, the 16 x 16 optical switching matrix is used as a basic functional unit to realize the mapping of the 500MHz baseband signal to the 2GHz bandwidth transmitting beam channel. The four 500MHz channels are integrated, filtered and amplified into one 2GHz wideband channel by the photon transmitting channelization processor, and the integrated signal is sent to the communication transmitting beam. The microwave photon channelization switching with a port bandwidth of 2GHz, a switching scale of 500MHz and a switching scale of n x n is realized, and part of the 500Hz channels and the 0.58MHz scale sub-channel level digital circuit switching part and the data packet scale bit level digital packet switching part are hinged as needed.

[0114] (3) The sub-channel level digital circuit switching is composed of analog-to-digital conversion, digital variable bandwidth channel analysis, high number digital switching core, digital band-pass sub-channel synthesis, digital-to-analog conversion, etc. First, the 500MHz analog signal is converted into a digital signal by analog-to-digital conversion. In the digital domain, the digital channel analysis, switching and synthesis technology is used to realize the MHz order sub-channel switching within the digital processing port. Then, the 500MHz digital signal is converted into an analog signal by digital-to-analog conversion and sent to the optical channel switching. At the same time, part of the digital sub-channels and the bit level digital packet switching are hinged as needed.

[0115] (4) The data packet scale bit level digital packet switching part is composed of analog-digital conversion, demodulation decoding, routing switching, coding modulation, digital-analog conversion, etc., to complete the modulation and demodulation and coding and decoding of wideband channels and narrowband sub-channels, to complete the switching processing between the wideband channel communication data from the optical domain channelization switching, the narrowband sub-channel communication data from the digital circuit switching, and the inter-satellite high-speed communication data from the inter-satellite laser link in the data domain, and to send the user access signaling, ground operation and control instructions, etc. to the on-board management and control.

[0116] (5) The on-board management and control is composed of on-board signaling processing and on-board resource management, etc., to complete the analysis and execution of common channel signaling, on-channel signaling or service frequency band common channel signaling, to complete the communication user management and on-board resource management and control, and to realize the integrated management and control of the four layers of switching of communication beams, wideband channels, narrowband sub-channels, data packets, etc.

[0117] Figure 2 In the present application, the on-board multi-scale hybrid wideband switching system has five functional units of microwave photon transparent transponder, optical domain channelization switch, flexible digital channelization switch, on-board processing and packet switch, and on-board resource management and control. Among them, the 2GHz scale ultra-wideband communication service is provided based on the microwave photon transparent transponder, the flexible mapping of the wideband receiving beam to the wideband transmitting beam is realized, and part of the 2GHz channel is extracted as needed and hinged with the 500MHz scale optical domain channelization switch; the 500MHz scale wideband communication service is provided based on the microwave photon transparent transponder and the optical domain channelization switch, the flexible mapping of the receiving 500MHz channel to the transmitting 500MHz channel is realized, and part of the 500Hz channel is extracted as needed and hinged with the flexible digital channelization switch and the on-board processing and packet switch; the 0.58MHz scale sub-channel level communication service is provided based on the microwave photon transparent transponder, the optical domain channelization switch and the flexible digital channelization switch, the flexible mapping of the receiving 0.58MHz sub-channel to the transmitting 0.58MHz sub-channel is realized, and part of the digital sub-channel is extracted as needed and hinged with the on-board processing and packet switch; the data packet scale communication service is provided based on the on-board processing and packet switch, the switching processing between the wideband channel communication data from the optical domain channelization switching, the narrowband sub-channel communication data from the digital circuit switching, and the inter-satellite high-speed communication data from the inter-satellite laser link in the data domain is completed, the on-board one-hop communication and cross-satellite communication collaborative networking are supported, and the user access signaling, ground operation and control instructions, etc. are sent to the on-board resource management and control unit; the on-board resource management and control unit completes the analysis and execution of common channel signaling, on-channel signaling or service frequency band common channel signaling, and completes the communication user management and on-board resource management and control.

[0118] Figure 3The standardized design 4-channel integrated electro-optical conversion assembly, 8-channel integrated optical amplification module, 16-channel optical switching module and 4-channel integrated optical-electric conversion assembly are used as the standardized functional assembly / module to build the spaceborne microwave photonic transparent transponder. The 4-channel integrated electro-optical conversion assembly modulates the 2GHz bandwidth radio frequency signals of 4 receiving beams and the corresponding local oscillator signals onto the optical carrier, mixes the receiving radio frequency signals and the local oscillator signals at a higher frequency, improves the working bandwidth and instantaneous bandwidth, and improves the intermodulation characteristic. The 8-channel integrated optical amplification module simultaneously amplifies 8 frequency conversion channels using different optical carriers in parallel, reducing the volume and weight cost of the amplification link. The 16-channel optical switching module is used as the basic functional unit to build a non-blocking optical switching network with a cascaded structure on demand, realize the hinging of N receiving channels and M transmitting channels, and extract part of the beam channels and the optical domain channelized switching hinge on demand. The 4-channel integrated optical-electric conversion assembly converts 4 optical signals into radio frequency signals, filters and amplifies, and sends the 4 2GHz bandwidth communication transmitting beams.

[0119] Figure 4 The spaceborne optical domain channelized switch design and implementation diagram are shown in the figure. The standardized design 1: 4 photonic receiving channelized processor, 8-channel integrated optical amplification module, 16-channel optical switching module, 4-channel optical-electric conversion and intermediate frequency amplification assembly, 4-channel integrated electro-optical conversion assembly, 4:1 photonic transmitting channelized processor are used as the standardized functional assembly / module to build a spaceborne optical domain channelized switch with a port bandwidth of 2GHz, a switching granularity of 500MHz and a switching scale of 16x16. The number and scale of the spaceborne optical domain channelized switch are confirmed according to the system requirements on this basis. The 1:4 photonic receiving channelized processor receives the 2GHz bandwidth beam channels selected by the microwave photonic transparent transponder, mixes a plurality of frequency conversion local oscillators with the 2GHz bandwidth beam channels using an optical frequency comb, and outputs 4 500MHz bandwidth optical domain channels. The 8-channel integrated optical amplification module simultaneously amplifies 8 communication channels using different optical carriers in parallel. The 16-channel optical switching module realizes flexible switching and mapping of 16 500MHz analog channels to 16 digital processing channels. The 4-channel optical-electric conversion and intermediate frequency amplification assembly completes the signal matching of the optical channel and the digital channel, sends the digital processing or transmitting optical channelized switch. The 4-channel integrated electro-optical conversion assembly modulates the 500MHz bandwidth digital baseband signal or the 500MHz bandwidth analog channel transmitted by the receiving channelized switch onto the optical carrier, mixes the digital baseband signal and the local oscillator signal at a higher frequency. The 8-channel integrated optical amplification module simultaneously amplifies 8 communication channels using different optical carriers in parallel. The 16-channel optical switching module realizes flexible switching and mapping of 16 500MHz optical channels. The 4:1 photonic transmitting channelized processor completes the integration, filtering and amplification of 4 500MHz channels to 1 2GHz wideband channel, and sends the microwave photonic transparent transponder.

[0120] Figure 5 In the specific embodiment, the block diagram of the satellite-borne digital switch is designed and implemented. The digital hardware platform is divided and designed according to the digital baseband, data switching, digital switching control, etc., and the digital switching capability is defined by using the software reconfiguration. For the 0.58MHz scale sub-channel level digital circuit switching service, the variable bandwidth signal analysis and channel synthesis software is loaded on the corresponding digital baseband, the 500MHz wideband channel is subdivided into 768 0.58MHz narrowband sub-channels by using high-order digital filtering, the digital forwarding switching software is loaded on the data switching, and the reconfiguration process and switching process are controlled on the digital switching control. For the data packet scale bit level digital packet switching service, the modulation and demodulation and coding and decoding software is loaded on the corresponding digital baseband, the packet switching software is loaded on the data switching, and the reconfiguration process and switching process are controlled on the digital switching control. The two types of switching functions perform sub-channel level data switching on the data switching, support cross-sat operation of the digital forwarding service, extraction and analysis processing of the signaling in the same channel as the service frequency band, etc.

[0121] The application provides an embodiment of a satellite-borne multi-scale hybrid broadband switching method, specifically as follows:

[0122] (1) User access is completed based on the signaling in the same channel, the signaling in the same channel as the service frequency band, or the signaling in the same channel as the service frequency band, ground operation and control instructions are received, and satellite resource management and control processing is completed.

[0123] (2) The ultra-wideband microwave photon transparent transponder is controlled, the functional units of radio frequency electro-optical conversion and local oscillation mixing, optical gain compensation, NxN non-blocking optical switching, MxM non-blocking optical switching, photoelectric conversion and radio frequency amplification, etc. are configured, NXM backward transparent forwarding with a port bandwidth of 2GHz and MxN forward transparent forwarding with a port bandwidth of 2GHz are realized, and part of the 2GHz bandwidth beam channels and the 500MHz scale microwave photon channelized switching part are extracted as hinges.

[0124] (3) The broadband optical domain channelized switch is controlled, the functional links of photonic receiving channelized processor, optical gain compensation, n x n non-blocking optical switching, photoelectric conversion and intermediate frequency amplification, intermediate frequency electro-optical conversion and local oscillation mixing, photonic transmitting channelized processor, etc. are configured, microwave photon channelized switching with a port bandwidth of 2GHz, a switching scale of 500MHz and a switching scale of n x n is realized, and part of the 500Hz channels and the 0.58MHz scale sub-channel level digital circuit switching part and the data packet scale bit level digital packet switching part are extracted as hinges.

[0125] (4) Control flexible digital channelization switch, configure digital variable bandwidth channel analysis, high number digital switching core, digital bandpass channel synthesis and other functional links, with 500MHz channel hinge of microwave photon channelization switch part, realize port bandwidth 500MHz, switching scale 0.58MHz subchannel level digital circuit switching, and extract part 0.58MHz subchannel and data packet scale bit level digital packet switching part according to demand.

[0126] (5) Control packet switch, configure demodulation decoding, routing switching, encoding modulation and other functional links, with inter-satellite laser link 10Gbps channel, microwave photon channelization switch 500MHz channel, subchannel level digital circuit switching 0.58MHz subchannel, realize inter-satellite networking and intra-satellite switching, routing, signaling processing and other functions.

[0127] (6) Collect satellite-borne broadband switching device state telemetry periodically through on-board management and control, report ground operation and control center through inter-satellite laser link and satellite-ground feeder link.

[0128] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the present application, but not to limit it, although the present application has been described in detail with reference to the above examples, those skilled in the art should understand that: the specific embodiments of the present application can still be modified or replaced, without departing from the spirit and scope of the present application, any modification or equivalent replacement, which should be covered within the protection scope of the claims of the present application.

Claims

1. A spaceborne multi-scale hybrid broadband switching system, characterized in that, This includes a spaceborne microwave photonic transparent transponder, a spaceborne optical domain channelized switch, a spaceborne digital switch, and a spaceborne integrated control unit; The spaceborne microwave photonic transparent transponder is used to receive uplink ultra-wideband communication signals of the first bandwidth scale and modulate them with local oscillator signals onto an optical carrier. It performs mixing of the uplink ultra-wideband communication signals and local oscillator signals on the optical carrier, outputs an ultra-wideband mixed optical signal, performs optical gain compensation and optical switching on it, performs path switching on the ultra-wideband mixed optical signal, and performs first radio frequency processing on the selected ultra-wideband mixed optical signal to output a downlink ultra-wideband communication signal of the first bandwidth scale. Simultaneously, it extracts a portion of the ultra-wideband mixed optical signal as needed and inputs it to a spaceborne optical domain channelization switch for broadband channel-level communication switching processing of the second bandwidth scale. It also receives the ultra-wideband mixed optical signal output from the spaceborne optical domain channelization switch, performs second radio frequency processing, and outputs a downlink ultra-wideband communication signal of the first bandwidth scale. The first radio frequency processing includes photoelectric conversion, radio frequency amplification, and filtering; the second radio frequency processing includes optical switching, photoelectric conversion, and radio frequency amplification. The first bandwidth scale is 2 GHz, and the second bandwidth scale is 500 MHz. The spaceborne optical domain channelization switch receives ultra-wideband mixed optical signals output from a spaceborne microwave photonic transparent transponder. A photonic receiving channelization processor performs channelization frequency conversion on the ultra-wideband mixed optical signals of the first bandwidth scale, outputting M channels of broadband communication optical signals of the second bandwidth scale. The processor then performs optical gain compensation and optical switching on these broadband communication optical signals, performs path switching on the selected broadband communication optical signals, and performs third-stage radio frequency processing on the selected broadband communication optical signals. Finally, it outputs broadband communication intermediate frequency electrical signals of the second bandwidth scale and inputs them to a spaceborne digital switch or a spaceborne optical domain channelization switch. It also receives signals from the spaceborne digital switch or the spaceborne optical domain channelization switch. The second bandwidth-scale communication intermediate frequency (IF) signal output by the photonics exchange is modulated onto an optical carrier along with a local oscillator signal. Mixing of the broadband communication IF signal and the local oscillator signal is performed on the optical carrier, resulting in the output of a broadband communication optical signal. Optical gain compensation and optical switching are then performed on the broadband communication optical signal. Path switching is performed on the broadband communication optical signal. Every M channels of the second bandwidth-scale communication optical signal are grouped together and input to the photonics transmission channelization processor. A first bandwidth-scale ultra-wideband mixed optical signal is output and input to the spaceborne microwave photonic transparent transponder. The third radio frequency processing includes photoelectric conversion, IF amplification, and filtering; M is a positive integer. The spaceborne digital switch is used to implement sub-channel level digital circuit switching services at the third bandwidth scale or bit-level digital packet switching services at the data packet scale; wherein, the third bandwidth scale is 0.58MHz; The spaceborne integrated control unit is used to receive the signaling channel payload data output from the bit-level digital packet switching service of the spaceborne digital switch, complete the parsing and processing of common signaling, associated signaling or service frequency band common signaling, and generate control commands to issue to the spaceborne microwave photonic transparent repeater, spaceborne optical domain channelized switch and spaceborne digital switch, and realize the integrated control of spaceborne communication switching equipment based on unified on-board control.

2. The spaceborne multi-scale hybrid broadband switching system according to claim 1, characterized in that, The onboard digital switch is specifically used for: In the third bandwidth scale sub-channel level digital circuit switching service mode, the second bandwidth scale communication intermediate frequency electrical signal output from the spaceborne optical domain channelized switch is received, analog-to-digital conversion is completed, the fourth radio frequency processing is completed in the digital domain, and the second bandwidth scale communication intermediate frequency electrical signal is output to the spaceborne optical domain channelized switch, or the third bandwidth scale sub-channel sampling data is output and provided to the spaceborne digital switch for data packet scale bit-level digital packet switching service; the fourth radio frequency processing includes digital channel analysis, switching, and synthesis. In the data packet-scale bit-level digital packet switching service mode, it receives the second bandwidth-scale communication intermediate frequency electrical signal output from the spaceborne optical domain channelized switch or the third bandwidth-scale sub-channel sampling data output from the third bandwidth-scale sub-channel level digital circuit switching service of the spaceborne digital switch. It completes the fifth radio frequency processing in the digital domain to realize data packet switching between different ports or sub-channels, outputs the second bandwidth-scale communication intermediate frequency electrical signal to the spaceborne optical domain channelized switch, or outputs the third bandwidth-scale sub-channel sampling data and provides it to the third bandwidth-scale sub-channel level digital circuit switching service of the spaceborne digital switch. It also exchanges signaling channel payload data with the spaceborne integrated control unit. The fifth radio frequency processing includes scrambling / descrambling, encoding / decoding, modulation / demodulation, and packet switching.

3. The spaceborne multi-scale hybrid broadband switching system according to claim 1, characterized in that, The spaceborne microwave photonic transparent transponder is used to receive on-board resource configuration instructions issued by the spaceborne integrated control unit, complete instruction parsing, and send instruction control codes to the spaceborne microwave photonic transparent transponder. It configures the path mapping relationship between the input and output interfaces by controlling the 4M channel optical switching module of the spaceborne microwave photonic transparent transponder, and configures the frequency conversion relationship between the input and output interfaces by controlling the broadband tunable frequency source of the spaceborne microwave photonic transparent transponder. It realizes the first bandwidth scale microwave photonic transparent transponder service for radio frequency uplink ultra-wideband communication signals to radio frequency downlink ultra-wideband signals, forwards part of the radio frequency uplink ultra-wideband communication signals to the spaceborne optical domain channelized switch in the form of first bandwidth scale ultra-wideband mixed optical signals, and is also used to receive the first bandwidth scale ultra-wideband mixed optical signals output by the spaceborne optical domain channelized switch.

4. The spaceborne multi-scale hybrid broadband switching system according to claim 1, characterized in that, The spaceborne optical domain channelization switch is used to receive on-board resource configuration instructions issued by the spaceborne integrated control unit, complete instruction parsing, and send instruction control codes to the 4M channel optical switching module of the spaceborne optical domain channelization switch. It configures the path mapping relationship between the second bandwidth scale broadband mixed optical signal output by the 1:M photon receiving channelization processor and the second bandwidth scale broadband mixed optical signal input by the M:1 photon transmitting channelization processor, realizes the second bandwidth scale optical domain channelization switching from the input first bandwidth scale ultra-wideband mixed optical signal to the output first bandwidth scale ultra-wideband mixed optical signal, forwards part of the second bandwidth scale broadband communication intermediate frequency electrical signal to the spaceborne digital switch, and is also used to receive the second bandwidth scale broadband communication intermediate frequency electrical signal output by the spaceborne digital switch.

5. The spaceborne multi-scale hybrid broadband switching system according to claim 1, characterized in that, The spaceborne microwave photonic transparent transponder includes an M-channel integrated electro-optical conversion component, a 2M-channel integrated optical amplification module, a 4M-channel optical switching module, and an M-channel integrated photoelectric conversion component. The M-channel integrated electro-optical conversion component is used to receive M uplink ultra-wideband communication signals of the first bandwidth scale and combine them with the local oscillator signal by radio frequency and modulate them onto the optical carrier. The uplink ultra-wideband communication signal and the local oscillator signal are mixed on the optical carrier to obtain M ultra-wideband mixed optical signals and input them into the 2M-channel integrated optical amplifier module. The 2M-channel integrated optical amplification module is used to receive 2M channels of first-bandwidth-scale ultra-wideband mixed optical signals output from multiple M-channel integrated electro-optic conversion components, perform first correlation processing, and amplify the signals obtained after the first correlation processing in parallel, outputting 2M channels of amplified first-bandwidth-scale ultra-wideband mixed optical signals to the 4M-channel optical switching module; the first correlation processing includes wavelength division multiplexing, optical amplification, and wavelength demultiplexing. The 4M-channel optical switching module is used to receive 4M first-bandwidth-scale ultra-wideband mixed optical signals output from multiple 2M-channel integrated optical amplification modules, complete path switching according to instructions, realize flexible mapping of 4M input interfaces and 4M output interfaces, and output 4M first-bandwidth-scale ultra-wideband mixed optical signals to the spaceborne microwave photonic transparent transponder and the spaceborne optical domain channelized switch respectively. The M-channel integrated optoelectronic conversion component is used to receive M-channel first-bandwidth-scale ultra-wideband mixed optical signals output from the 4M-channel optical switching module, complete the second correlation processing, and output M-channel first-bandwidth-scale radio frequency downlink ultra-wideband communication signals; the second correlation processing includes optoelectronic conversion, radio frequency filtering, and radio frequency amplification.

6. The spaceborne multi-scale hybrid broadband switching system according to claim 1, characterized in that, The spaceborne optical domain channelization switch includes a 1:M photon receiving channelization processor, a 2M channel integrated optical amplification module, a 4M channel optical switching module, an M channel photoelectric conversion and intermediate frequency amplification component, an M channel integrated electro-optical conversion component, and an M:1 photon transmitting channelization processor. 1:M photonic receiver channelization processor, used to receive the first bandwidth scale ultra-wideband mixed optical signal output by the spaceborne microwave photonic transparent transponder, use the optical comb local oscillator signal to complete the frequency conversion processing of M second bandwidth channels within the first bandwidth scale ultra-wideband mixed optical signal, output M 1.8GHz intermediate frequency, second bandwidth scale broadband mixed optical signals and input them into the 2M channel integrated optical amplifier module; The 2M channel integrated optical amplification module is used to receive 2M channels of second-bandwidth-scale ultra-wideband mixed optical signals output by multiple 1:M photon receiving channelization processors, complete the first correlation processing, and output 2M channels of amplified wideband mixed optical signals to the 4M channel optical switching module. Each 4M-channel optical switching module is used to receive 4M second-bandwidth scale ultra-wideband mixed optical signals output from multiple 2M-channel integrated optical amplification modules, complete path switching according to instructions, realize flexible mapping of 4M input interfaces and 4M output interfaces, output 4M second-bandwidth scale broadband mixed optical signals and send them to multiple M-channel optoelectronic conversion and intermediate frequency amplification components. The M-channel photoelectric conversion and intermediate frequency amplification component is used to receive M-channel second-bandwidth broadband mixed optical signals output from the 4M-channel optical switching module, complete the third correlation processing, and output M-channel second-bandwidth broadband communication intermediate frequency electrical signals, which are then sent to the spaceborne optical domain channelized switch or the spaceborne digital switch respectively. The third correlation processing includes photoelectric conversion, intermediate frequency amplification, and filtering. The M-channel integrated electro-optic conversion component is used to receive second-bandwidth-scale broadband communication intermediate frequency electrical signals from the spaceborne optical domain channelized switch and the spaceborne digital switch, modulate M second-bandwidth-scale broadband communication intermediate frequency electrical signals onto M laser carriers, output M intermediate frequency modulated optical signals and send them to the 2M-channel integrated optical amplifier module. The 2M-channel integrated optical amplification module is used to receive 2M intermediate frequency modulated optical signals output from multiple M-channel integrated electro-optic conversion components, complete the first correlation processing, and output 2M amplified intermediate frequency modulated optical signals to the 4M-channel optical switching module. Each 4M-channel optical switching module is used to receive 4M intermediate frequency modulated optical signals output from multiple 2M-channel integrated optical amplification modules, complete path switching according to instructions, realize flexible mapping of 4M input interfaces and 4M output interfaces, output 4M intermediate frequency modulated optical signals and send them to multiple M:1 photonic transmission channelization processors. M:1 photonic emission channelization processor is used to receive M second-bandwidth-scale intermediate frequency modulated optical signals output from the 4M-channel optical switching module, complete the fourth correlation processing, output a first-bandwidth-scale ultra-wideband mixed optical signal and input it to the spaceborne microwave photonic transparent transponder; the fourth correlation processing includes wavelength division multiplexing, optical filtering and power compensation.

7. The spaceborne multi-scale hybrid broadband switching system according to claim 1, characterized in that, The spaceborne digital switch includes a digital baseband module, a data switching module, and a switching control module; In the process of implementing third-bandwidth-scale sub-channel level digital circuit-switched services: The digital baseband module receives the second-bandwidth broadband communication intermediate frequency (IF) signal output from the spaceborne optical domain channelized switch, performs digital acquisition and variable bandwidth signal analysis and processing, subdivides the second-bandwidth broadband communication channel into N third-bandwidth narrowband sub-channels, and sends the communication signals of each narrowband sub-channel to the data switching module; it also receives the communication signals of each narrowband sub-channel output from the data switching module, performs variable bandwidth signal synthesis and digital-to-analog conversion, combines the N third-bandwidth narrowband sub-channels into a second-bandwidth broadband communication channel, outputs the second-bandwidth broadband communication IF signal, and inputs it to the spaceborne optical domain channelized switch; N is a positive integer; The data exchange module is used to receive narrowband sub-channel communication signals output by multiple digital baseband modules, and according to the instructions of the exchange control module, complete large-scale high-speed digital domain switching processing based on the digital forwarding and switching core, and input each narrowband sub-channel communication signal to the designated digital baseband module or provide it to the on-board digital switch for data packet scale bit-level digital packet switching services. The switching control module is used to receive control commands input from the spaceborne integrated control unit, complete command parsing and distribution processing, and send the parsed control commands to the data switching module and the digital baseband module to realize the integrated control and resource management of the spaceborne digital switch.

8. The spaceborne multi-scale hybrid broadband switching system according to claim 1, characterized in that, The spaceborne digital switch includes a digital baseband module, a data switching module, and a switching control module; In implementing data packet-scale bit-level digital packet switching services: The digital baseband module receives 1.8GHz intermediate frequency (IF) broadband communication IF signals of the second bandwidth scale from the spaceborne optical domain channelized switch, or narrowband sub-channel communication signals provided by the third bandwidth scale sub-channel level digital circuit-switched service of the spaceborne digital switch. It completes the fifth correlation processing, outputs communication payload data, and sends it to the data switching module. Simultaneously, it receives communication payload data from the data switching module, completes the sixth correlation processing, outputs the second bandwidth broadband communication IF signals to the spaceborne optical domain channelized switch, and outputs the third bandwidth scale narrowband sub-channel communication signals to the third bandwidth scale sub-channel level digital circuit-switched service of the spaceborne digital switch. The fifth correlation processing includes digital acquisition and descrambling, decoding, and demodulation; the sixth correlation processing includes modulation, coding, scrambling, and analog-to-digital conversion. The data exchange module is used to receive communication payload data output from multiple digital baseband modules, complete packet switching processing based on the packet switching core according to the instructions of the exchange control module, and send the communication payload data to the designated digital baseband module or to the laser inter-satellite link. It is also used to receive cross-satellite communication data from the laser inter-satellite link, complete packet switching processing according to the instructions of the exchange control module, and send the communication payload data to the designated digital baseband module or to the laser inter-satellite link. The switching control module is used to receive control commands input by the spaceborne integrated control unit, complete command parsing and distribution processing, and send the parsed control commands to the data switching module and the digital baseband module to realize the integrated control and resource management of the spaceborne digital switch. The system collects and summarizes the reported information from the data exchange module and digital baseband module, and then sends it to the onboard integrated control unit.

9. A spaceborne multi-scale hybrid broadband switching method, applicable to the spaceborne multi-scale hybrid broadband switching system according to any one of claims 1-8, characterized in that, include: The onboard integrated control unit receives the signaling channel payload data sent by the onboard digital switch at the bit-level digital packet switching service, completes the parsing and processing of relevant signaling and the onboard resource management strategy, generates onboard resource configuration instructions and sends them to the onboard microwave photonic transparent transponder, the onboard optical domain channelized switch and the onboard digital switch; the relevant signaling includes common-path signaling, associated-path signaling or service frequency band common-path signaling; The onboard microwave photonic transparent transponder receives onboard resource configuration instructions from the onboard integrated control unit, completes instruction parsing, and sends instruction control codes to the onboard microwave photonic transparent transponder to realize the first bandwidth scale microwave photonic transparent forwarding service from radio frequency uplink ultra-wideband communication signals to radio frequency downlink ultra-wideband signals. It forwards part of the radio frequency uplink ultra-wideband communication signals to the onboard optical domain channelized switch in the form of ultra-wideband mixed optical signals and receives the ultra-wideband mixed optical signals output by the onboard optical domain channelized switch. The spaceborne optical domain channelized switch receives the onboard resource configuration instructions issued by the spaceborne integrated control unit, completes instruction parsing, and issues instruction control codes to the spaceborne optical domain channelized switch to realize the second bandwidth scale optical domain channelized switching of the input first bandwidth scale ultra-wideband mixed optical signal to the output first bandwidth scale ultra-wideband mixed optical signal, forwards part of the broadband communication intermediate frequency electrical signal to the spaceborne digital switch, and receives the broadband communication intermediate frequency electrical signal output by the spaceborne digital switch. The onboard digital switch receives onboard resource configuration instructions from the onboard integrated control unit, completes instruction parsing, and configures the resource scale of the third bandwidth scale sub-channel level digital circuit switching service and the data packet scale bit level digital packet switching service according to the instruction requirements.

10. The spaceborne multi-scale hybrid broadband switching method according to claim 9, characterized in that, The onboard digital switch receives onboard resource configuration instructions from the onboard integrated control unit, parses the instructions, and configures the resource scale for the third bandwidth scale sub-channel level digital circuit switching service and the data packet scale bit level digital packet switching service according to the instructions, including: In the third-bandwidth-scale sub-channel level digital circuit switching service mode, the onboard digital switch issues command control codes to the digital baseband module and data switching module based on the issued onboard resource configuration commands. By controlling the allocation of uplink and downlink user resources by the digital baseband and controlling the path mapping relationship between the input and output interfaces by the data switching module, the third-bandwidth-scale sub-channel level digital circuit switching of the input second-bandwidth broadband communication intermediate frequency electrical signal to the output second-bandwidth broadband communication intermediate frequency electrical signal is realized. Based on the joint implementation of the onboard digital switch, the onboard optical domain channelized switch and the onboard microwave photonic transparent transponder, the third-bandwidth-scale narrowband sub-channel level onboard communication switching service of the radio frequency uplink ultra-wideband communication signal to the radio frequency downlink ultra-wideband signal is realized. At the same time, the third-bandwidth-scale narrowband sub-channel data that needs to be switched at a smaller scale is provided to the onboard digital switch for the data packet scale bit-level digital packet switching service. It also receives the third-bandwidth-scale narrowband sub-channel data provided by the onboard digital switch for the data packet scale bit-level digital packet switching service and accesses the third-bandwidth-scale sub-channel level digital circuit switching service of the onboard digital switch. In the data packet scale bit-level digital packet switching service mode, the onboard digital switch sends instruction control codes to the data switching module of the onboard digital switch based on the issued onboard resource configuration instructions, configures the routing and switching relationship of the data switching module, and realizes data packet scale bit-level digital packet switching from input user data to output user data. This enables data packet scale onboard communication switching service from radio frequency uplink ultra-wideband communication signals to radio frequency downlink ultra-wideband communication signals based on the joint operation of the onboard digital switch, the onboard optical domain channelized switch, and the onboard microwave photonic transparent transponder.

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