Software-defined multi-system satellite communication load system and resource management method

Abstract

The invention discloses a software-defined multi-system satellite communication load system which comprises a satellite-borne routing unit, a microwave photon frequency conversion switching unit, a comprehensive antenna microwave antenna, a comprehensive ground microwave antenna, a high-performance computing power unit, a low-speed AD / DA conversion unit, a high-speed waveform processing unit and a laser / W-frequency-band microwave common-aperture inter-satellite satellite-ground terminal. According to the invention, on-demand expansion of load capacity and miniaturization of a load system are realized, and the system integration degree is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of satellite communication, and particularly relates to a software-defined multi-system satellite communication payload system and a resource management method. BACKGROUND

[0002] With the system planning and rapid development of the space-based satellite Internet, in the future, a space-based network information constellation system composed of tens of thousands of satellites in different orbits will be formed, which puts forward the capability requirements of miniaturization, generalization, standardization and waveform flexible reconstruction for the satellite communication payload.

[0003] The satellite communication payload system involves L, S, C, X, Ku, Ka, Q, V and W microwave bands and laser optical bands. The traditional satellite communication payload usually adopts fixed hardware to realize the waveform processing function of specific services, and generally only supports a single microwave band or laser band related to the required services. The communication payloads of different communication waveforms between different satellites and in the same satellite cannot realize network interconnection, and the resource sharing capability is weak, resulting in complex payload system, poor flexibility, low utilization efficiency of communication resources, difficult upgrade and high cost, which cannot meet the construction requirements of the space-based network information system.

[0004] The prior art realizes hardware resource sharing and service function reconstruction of C, S, X, Ku and Ka multiple frequency bands in the satellite communication payload and the ground station communication processing system, which improves the system integration and flexibility to a certain extent, but cannot support high-frequency microwave bands such as W band and laser band, and the generalization and standardization degree is insufficient. Different communication waveforms are realized based on DSP, FPGA and CPU, and the software and hardware are tightly coupled, the sharing degree of computing resources is low, and it is difficult to realize flexible reconstruction of different communication waveforms. SUMMARY

[0005] The technical problem solved by the application is to overcome the shortcomings of the prior art, provide a software-defined multi-system satellite communication payload system and a resource management method, realize on-demand expansion of payload capacity and miniaturization of the payload system, and improve the system integration.

[0006] The application aims to realize the technical scheme as follows: a software-defined multi-system satellite communication payload system, comprising: a satellite-borne routing unit, a microwave photon frequency conversion and switching unit, a comprehensive skyward microwave antenna, a comprehensive groundward microwave antenna, a high-performance computing unit, a low-speed AD / DA conversion unit, a high-speed waveform processing unit and a laser / W-band microwave co-aperture inter-satellite and satellite-ground terminal; wherein the comprehensive skyward microwave antenna: receives multiple radio frequency electrical signals input by the microwave photon frequency conversion and switching unit, converts the multiple radio frequency signals into multiple wireless signals and transmits the multiple wireless signals to other satellites; receives multiple first wireless signals transmitted by other satellites, converts the multiple first wireless signals into multiple first radio frequency electrical signals and sends the multiple first radio frequency electrical signals to the microwave photon frequency conversion and switching unit; the comprehensive groundward microwave antenna: receives multiple radio frequency electrical signals input by the microwave photon frequency conversion and switching unit, converts the multiple radio frequency signals into multiple wireless signals and transmits the multiple wireless signals to a ground station or a ground terminal; receives multiple second wireless signals transmitted by the ground station or the ground terminal, converts the multiple second wireless signals into multiple second radio frequency electrical signals and sends the multiple second radio frequency electrical signals to the microwave photon frequency conversion and switching unit; the laser / W-band microwave co-aperture inter-satellite and satellite-ground terminal: receives a space optical signal of other satellites or a ground station, couples the space optical signal into a wired optical modulation signal; receives a W-band wireless signal, converts the W-band wireless signal into a wired radio frequency electrical signal, and sends the wired optical modulation signal and the wired radio frequency electrical signal to the microwave photon frequency conversion and switching unit; receives multiple optical modulation signals and multiple radio frequency electrical signals input by the microwave photon frequency conversion and switching unit and converts the multiple optical modulation signals and the multiple radio frequency electrical signals into first space optical wireless signals and first W-band wireless signals respectively, and sends the first space optical wireless signals and the first W-band wireless signals to other satellites or the ground station; the microwave photon frequency conversion and switching unit: receives multiple intermediate frequency electrical signals of the low-speed AD / DA conversion unit and multiple optical modulation signals of the high-speed waveform processing unit, generates multiple optical carrier radio frequency signals by microwave photon electro-optical modulation of the multiple intermediate frequency electrical signals, obtains a combined optical signal by wavelength division multiplexing of the multiple optical carrier radio frequency signals, obtains multiple optical carrier radio frequency signals by wavelength division demultiplexing of the combined optical signal, obtains multiple radio frequency electrical signals by microwave photon down-conversion processing of the multiple optical carrier radio frequency signals, sends the multiple radio frequency electrical signals to microwave radio frequency ports of the comprehensive skyward microwave antenna, the comprehensive groundward microwave antenna and the laser / W-band microwave co-aperture inter-satellite and satellite-ground terminal, obtains a combined optical modulation signal by wavelength division multiplexing of the multiple optical modulation signals, obtains multiple optical modulation signals by wavelength division demultiplexing of the combined optical modulation signal, and sends the multiple optical modulation signals to optical ports of the laser / W-band microwave co-aperture inter-satellite and satellite-ground terminal.The application relates to a satellite communication system, which comprises a high-speed waveform processing unit, a high-performance computing unit, a low-speed AD / DA conversion unit and a satellite routing unit. The satellite routing unit is connected with the high-speed waveform processing unit, the high-performance computing unit and the low-speed AD / DA conversion unit. The satellite routing unit receives high-speed original service data from the high-speed waveform processing unit, and the high-speed original service data is subjected to high-speed laser modulation coding processing to obtain a plurality of optical modulation signals, which are sent to the microwave photon frequency conversion exchange unit. The microwave photon frequency conversion exchange unit receives the plurality of second optical modulation signals from the high-speed waveform processing unit, and the plurality of second optical modulation signals are subjected to demodulation decoding processing to obtain second high-speed original service data, which is sent to the satellite routing unit. The high-speed waveform processing unit receives the second high-speed original service data from the satellite routing unit, and the second high-speed original service data is subjected to demodulation decoding processing to obtain high-speed original service data, which is sent to the satellite routing unit. The high-performance computing unit receives the low-speed service data sent by the low-speed AD / DA conversion unit, and the low-speed service data is subjected to demodulation decoding processing to obtain the modulated and coded low-speed service data, which is sent back to the satellite routing unit. The high-performance computing unit receives the second high-speed original service data sent by the high-speed waveform processing unit, and the second high-speed original service data is subjected to demodulation decoding processing to obtain high-speed original service data, which is sent back to the satellite routing unit. The satellite routing unit receives the low-speed service data sent by the low-speed AD / DA conversion unit, and the low-speed service data is transmitted to the high-performance computing unit. The satellite routing unit receives the modulated and coded low-speed service data sent by the high-performance computing unit, and the modulated and coded low-speed service data is sent to the low-speed AD / DA conversion unit. The satellite routing unit receives the second high-speed original service data sent by the high-speed waveform processing unit, and the second high-speed original service data is transmitted to the high-performance computing unit. The satellite routing unit receives the high-speed original service data sent by the high-performance computing unit, and the high-speed original service data is sent to the high-speed waveform processing unit.

[0007] In the software-defined multi-system satellite communication payload system, the on-board routing unit comprises a routing protocol processing module and an Ethernet switch module; the routing protocol processing module receives routing protocol packets, modulated and encoded low-speed service data and high-speed original service data from the Ethernet switch module, performs routing information analysis and routing calculation on the routing protocol packets to obtain routing calculation results, re-frames the modulated and encoded low-speed service data and high-speed original service data according to the routing calculation results, and sends them to the Ethernet switch module; the Ethernet switch module receives modulated and encoded low-speed service data and high-speed original service data sent by the high-performance computing unit, sends preset routing protocol packets, modulated and encoded low-speed service data and high-speed original service data to the routing protocol processing module, receives re-framed modulated and encoded low-speed service data and high-speed original service data, sends the modulated and encoded low-speed service data to the low-speed AD / DA conversion unit, and sends the high-speed original service data to the high-performance computing unit, receives low-speed service data sent by the low-speed AD / DA conversion unit and second high-speed original service data sent by the high-speed waveform processing unit, and transmits the low-speed service data and the second high-speed original service data to the high-performance computing unit.

[0008] In the software-defined multi-system satellite communication payload system, the on-board routing unit comprises a first on-board routing unit and a second on-board routing unit.

[0009] The microwave photon frequency conversion and exchange unit comprises a multi-path microwave electro-optical mixer, an optical switch matrix, a first multi-path microwave photoelectric frequency divider, a second multi-path microwave photoelectric frequency divider and a third multi-path microwave photoelectric frequency divider; wherein the multi-path microwave electro-optical mixer receives multi-path intermediate frequency electrical signals of the low-speed AD / DA conversion unit and multi-path optical modulation signals of the high-speed waveform processing unit, performs microwave photon electro-optical modulation on the multi-path intermediate frequency electrical signals to generate multi-path optical carrier radio frequency signals, performs wavelength division multiplexing on the multi-path optical carrier radio frequency signals to obtain combined optical signals, and sends the combined optical signals and the multi-path optical modulation signals to the optical switch matrix; the multi-path optical modulation signals are subjected to wavelength division multiplexing to obtain combined optical modulation signals, and the combined optical modulation signals are sent to the optical switch matrix; the optical switch matrix receives the combined optical signals, performs channel mapping switching to obtain mapped and switched optical signals, and transmits the mapped and switched optical signals to the first multi-path microwave photoelectric frequency divider, the second multi-path microwave photoelectric frequency divider and the third multi-path microwave photoelectric frequency divider, respectively; the combined optical modulation signals are transmitted to the third multi-path microwave photoelectric frequency divider; the first multi-path microwave photoelectric frequency divider receives the mapped and switched optical signals, performs wavelength division demultiplexing on the mapped and switched optical signals to obtain multi-path optical carrier radio frequency signals, performs microwave photon down-conversion on the multi-path optical carrier radio frequency signals to obtain multi-path radio frequency electrical signals, and sends the multi-path radio frequency electrical signals to microwave radio frequency ports of the integrated anti-skyward microwave antenna; the second multi-path microwave photoelectric frequency divider receives the mapped and switched optical signals, performs wavelength division demultiplexing on the mapped and switched optical signals to obtain multi-path optical carrier radio frequency signals, performs microwave photon down-conversion on the multi-path optical carrier radio frequency signals to obtain multi-path radio frequency electrical signals, and sends the multi-path radio frequency electrical signals to microwave radio frequency ports of the integrated anti-ground microwave antenna; and the third multi-path microwave photoelectric frequency divider receives the mapped and switched optical signals, performs wavelength division demultiplexing on the mapped and switched optical signals to obtain multi-path optical carrier radio frequency signals, performs microwave photon down-conversion on the multi-path optical carrier radio frequency signals to obtain multi-path radio frequency electrical signals, and sends the multi-path radio frequency electrical signals to microwave radio frequency ports of the laser / W-band microwave common-aperture inter-satellite and satellite-ground terminal.

[0010] In the software-defined multi-system satellite communication payload system, the first multi-path microwave electro-optical frequency divider receives a plurality of first radio frequency electrical signals from the integrated microwave antenna for the sky, performs electro-optical modulation on the plurality of first radio frequency electrical signals to generate a plurality of second optical carrier radio frequency signals, performs wavelength division multiplexing processing on the plurality of second optical carrier radio frequency signals to obtain a second combined optical signal, and transmits the second combined optical signal to the optical switch matrix; the second multi-path microwave electro-optical frequency divider receives a plurality of second radio frequency electrical signals from the integrated microwave antenna for the ground, performs electro-optical modulation on the plurality of second radio frequency electrical signals to generate a plurality of second optical carrier radio frequency signals, performs wavelength division multiplexing processing on the plurality of second optical carrier radio frequency signals to obtain a second combined optical signal, and transmits the second combined optical signal to the optical switch matrix; the third multi-path microwave electro-optical frequency divider receives a wired optical modulation signal and a wired radio frequency electrical signal, performs electro-optical modulation on the wired radio frequency electrical signal to generate a plurality of second optical carrier radio frequency signals, performs wavelength division multiplexing combined processing on the plurality of second optical carrier radio frequency signals and the wired optical modulation signal to obtain a second combined optical signal, and transmits the second combined optical signal to the optical switch matrix; the optical switch matrix receives the second combined optical signal, performs channel mapping switching on the second combined optical signal to obtain a mapping switched second optical signal, and transmits the mapping switched second optical signal to the multi-path microwave electro-optical frequency divider; and the multi-path microwave electro-optical frequency divider receives the mapping switched second optical signal, performs wavelength division demultiplexing on the mapping switched second optical signal to obtain a plurality of second optical modulation signals and a plurality of second optical carrier radio frequency signals, transmits the plurality of second optical modulation signals to the optical port of the high-speed waveform processing unit, performs microwave photon down-conversion processing on the plurality of second optical carrier radio frequency signals to obtain a plurality of second intermediate frequency electrical signals, and transmits the plurality of second intermediate frequency electrical signals to the intermediate frequency port of the low-speed AD / DA conversion unit.

[0011] In the software-defined multi-system satellite communication payload system, the multi-path microwave electro-optical frequency divider is connected to the optical switch matrix through an optical fiber, and the optical switch matrix is connected to the first multi-path microwave electro-optical frequency divider, the second multi-path microwave electro-optical frequency divider, and the third multi-path microwave electro-optical frequency divider through optical fibers.

[0012] In the software-defined multi-system satellite communication payload system, the system further comprises a master control unit, wherein the master control unit is connected to the on-board routing unit.

[0013] In the software-defined multi-system satellite communication payload system, the system further comprises an on-board storage unit, wherein the on-board storage unit is connected to the on-board routing unit.

[0014] In the software-defined multi-system satellite communication payload system, the master control unit is configured to implement system working mode data flow control, computing resource management, waveform processing task scheduling, and a standard Ethernet remote control and telemetry interface with a satellite computer.

[0015] A multi-system satellite communication payload resource management method based on software defined radio, comprising: a master control unit receiving and analyzing a working mode instruction from a satellite computer to obtain a waveform processing task to be deployed; the master control unit comparing the waveform processing task to be deployed with a currently running waveform processing task, dividing the same task in the currently running waveform processing task as the waveform processing task to be deployed into a task to be retained, other tasks into a task to be stopped, and dividing an added task of the waveform processing task to be deployed; the master control unit comparing the computing resource demand of the task to be stopped with the computing resource demand of the added task; when the computing resource demand of the task to be stopped is the same as the computing resource demand of the added task, the master control unit closes the container image of the task to be stopped and replaces the container image of the added task;

[0016] When the computing resource demand of the task to be stopped is greater than the computing resource demand of the added task, the master control unit closes the container image of the task to be stopped, deploys the container image of the added task, and releases idle computing resources according to the minimum computing resource strategy; when the computing resource demand of the task to be stopped is less than the computing resource demand of the added task, the master control unit closes the container image of the task to be stopped, deploys the container image of the added task, and adds computing resources according to the minimum computing resource strategy.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] (1) The present application constructs a unified communication payload architecture of generalization, standardization and multi-functional integration, realizes on-demand expansion of payload capacity and miniaturization of the payload system, and improves the system integration degree;

[0019] (2) The present application realizes efficient processing and flexible reconstruction of different system and different frequency band communication waveforms through software defined radio, computing resource virtualization and on-board container technology, and improves the system resource utilization efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of preferred embodiments and are not meant to limit the present application. Furthermore, the same reference numerals are used throughout the several drawings to represent similar parts. In the drawings:

[0021] Figure 1 is a structural block diagram of a software defined multi-system satellite communication payload system provided by the embodiments of the present application;

[0022] Figure 2 is a structural block diagram of an on-board routing unit provided by the embodiments of the present application;

[0023] Figure 3is a structural block diagram of a master control unit provided by an embodiment of the application;

[0024] Figure 4 is a structural block diagram of a microwave photon frequency conversion exchange unit provided by an embodiment of the application;

[0025] Figure 5 is a structural block diagram of a high-performance computing unit provided by an embodiment of the application;

[0026] Figure 6 is another structural block diagram of a software-defined multi-system satellite communication payload system provided by an embodiment of the application;

[0027] Figure 7 is another structural block diagram of an on-board routing unit provided by an embodiment of the application;

[0028] Figure 8 is another structural block diagram of a master control unit provided by an embodiment of the application;

[0029] Figure 9 is another structural block diagram of a microwave photon frequency conversion exchange unit provided by an embodiment of the application;

[0030] Figure 10 is another structural block diagram of a high-performance computing unit provided by an embodiment of the application;

[0031] Figure 11 is a flow chart of a multi-system satellite communication payload resource management method based on a software-defined radio provided by an embodiment of the application. DETAILED DESCRIPTION

[0032] Exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be accurately conveyed to those skilled in the art. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0033] Figure 1 is a structural block diagram of a software-defined multi-system satellite communication payload system provided by an embodiment of the application. As shown in Figure 1 , the software-defined multi-system satellite communication payload system comprises an on-board routing unit, a microwave photon frequency conversion exchange unit, a comprehensive space-to-sky microwave antenna, a comprehensive space-to-ground microwave antenna, a high-performance computing unit, a low-speed AD / DA conversion unit, a high-speed waveform processing unit, and a laser / W-band microwave common-aperture inter-satellite and earth terminal; wherein,

[0034] The comprehensive-to-sky microwave antenna: receives the multi-path radio frequency electrical signals input by the microwave photon frequency conversion switching unit, converts the multi-path radio frequency electrical signals into multi-path wireless signals, and transmits the multi-path wireless signals to other satellites; receives the multi-path first wireless signals transmitted by other satellites, converts the multi-path first wireless signals into multi-path first radio frequency electrical signals, and sends the multi-path first radio frequency electrical signals to the microwave photon frequency conversion switching unit;

[0035] The comprehensive-to-ground microwave antenna: receives the multi-path radio frequency electrical signals input by the microwave photon frequency conversion switching unit, converts the multi-path radio frequency electrical signals into multi-path wireless signals, and transmits the multi-path wireless signals to a ground station or a ground terminal; receives the multi-path second wireless signals transmitted by the ground station or the ground terminal, converts the multi-path second wireless signals into multi-path second radio frequency electrical signals, and sends the multi-path second radio frequency electrical signals to the microwave photon frequency conversion switching unit;

[0036] The laser / W-band microwave co-aperture inter-satellite / ground terminal: receives the space optical signals from other satellites or a ground station, and couples the space optical signals into wired optical modulation signals; receives the W-band wireless signals, converts the W-band wireless signals into wired radio frequency electrical signals, and sends the wired optical modulation signals and the wired radio frequency electrical signals to the microwave photon frequency conversion switching unit; receives the multi-path optical modulation signals and the multi-path radio frequency electrical signals input by the microwave photon frequency conversion switching unit, and converts the multi-path optical modulation signals and the multi-path radio frequency electrical signals into first space optical wireless signals and first W-band wireless signals, respectively, and sends the first space optical wireless signals and the first W-band wireless signals to other satellites or the ground station;

[0037] The microwave photon frequency conversion switching unit: receives the multi-path intermediate frequency electrical signals from the low-speed AD / DA conversion unit and the multi-path optical modulation signals from the high-speed waveform processing unit, performs microwave photon electro-optical modulation on the multi-path intermediate frequency electrical signals to generate multi-path optical carrier radio frequency signals, performs wavelength division multiplexing on the multi-path optical carrier radio frequency signals to obtain a combined optical signal, performs wavelength division demultiplexing on the combined optical signal to obtain multi-path optical carrier radio frequency signals, performs microwave photon down-conversion on the multi-path optical carrier radio frequency signals to obtain multi-path radio frequency electrical signals, and sends the multi-path radio frequency electrical signals to the microwave radio frequency ports of the comprehensive-to-sky microwave antenna, the comprehensive-to-ground microwave antenna, and the laser / W-band microwave co-aperture inter-satellite / ground terminal; performs wavelength division multiplexing on the multi-path optical modulation signals to obtain a combined optical modulation signal, performs wavelength division demultiplexing on the combined optical modulation signal to obtain multi-path optical modulation signals, and sends the multi-path optical modulation signals to the optical ports of the laser / W-band microwave co-aperture inter-satellite / ground terminal;

[0038] The first plurality of radio frequency electrical signals, the second plurality of radio frequency electrical signals, the wired optical modulation signal and the wired radio frequency electrical signal are received, the first plurality of radio frequency electrical signals, the second plurality of radio frequency electrical signals and the wired radio frequency electrical signal are electro-optically modulated to generate a second plurality of optical carrier radio frequency signals, the second plurality of optical carrier radio frequency signals and the wired optical modulation signal are wavelength division multiplexed to obtain a second combined optical signal, the second combined optical signal is wavelength division demultiplexed to obtain the second plurality of optical modulation signals and the second plurality of optical carrier radio frequency signals, the second plurality of optical modulation signals are sent to optical ports of the high-speed waveform processing unit, the second plurality of optical carrier radio frequency signals are microwave photonically down-converted to obtain a second plurality of intermediate frequency electrical signals, and the second plurality of intermediate frequency electrical signals are sent to intermediate frequency ports of the low-speed AD / DA conversion unit.

[0039] The low-speed AD / DA conversion unit receives the modulated and encoded low-speed service data from the satellite-borne routing unit, converts the modulated and encoded low-speed service data through DA conversion to obtain the plurality of intermediate frequency electrical signals, and sends the plurality of intermediate frequency electrical signals to the microwave photonically frequency conversion and switching unit; receives the second plurality of intermediate frequency electrical signals from the microwave photonically frequency conversion and switching unit, AD samples the second plurality of intermediate frequency electrical signals to obtain the low-speed service data, and sends the low-speed service data to the satellite-borne routing unit.

[0040] The high-speed waveform processing unit receives the high-speed original service data from the satellite-borne routing unit, high-speed laser modulates and encodes the high-speed original service data to obtain the plurality of optical modulation signals, and sends the plurality of optical modulation signals to the microwave photonically frequency conversion and switching unit; receives the second plurality of optical modulation signals from the microwave photonically frequency conversion and switching unit, demodulates and decodes the second plurality of optical modulation signals to obtain the second high-speed original service data, and sends the second high-speed original service data to the satellite-borne routing unit.

[0041] The high-performance computing unit receives the low-speed service data sent by the low-speed AD / DA conversion unit from the satellite-borne routing unit, demodulates and decodes the low-speed service data to obtain the modulated and encoded low-speed service data, and sends the modulated and encoded low-speed service data back to the satellite-borne routing unit; receives the second high-speed original service data sent by the high-speed waveform processing unit from the satellite-borne routing unit, demodulates and decodes the second high-speed original service data to obtain the high-speed original service data, and sends the high-speed original service data back to the satellite-borne routing unit.

[0042] The satellite-borne routing unit receives the low-speed service data sent by the low-speed AD / DA conversion unit, and transmits the low-speed service data to the high-performance computing unit; receives the modulated and encoded low-speed service data sent by the high-performance computing unit, and sends the modulated and encoded low-speed service data to the low-speed AD / DA conversion unit.

[0043] The second high-speed raw service data sent by the high-speed waveform processing unit is received, and the second high-speed raw service data is transmitted to the high-performance computing unit; the high-speed raw service data sent by the high-performance computing unit is received, and the high-speed raw service data is sent to the high-speed waveform processing unit.

[0044] As shown in Figure 2 The satellite-borne routing unit includes a routing protocol processing module and an Ethernet switching module; the routing protocol processing module receives routing protocol packets, modulated and encoded low-speed service data and high-speed raw service data from the Ethernet switching module, performs routing information analysis and routing calculation on the routing protocol packets to obtain routing calculation results, re-frames the modulated and encoded low-speed service data and high-speed raw service data according to the routing calculation results, and sends them to the Ethernet switching module; the Ethernet switching module receives modulated and encoded low-speed service data and high-speed raw service data sent by the high-performance computing unit, sends preset routing protocol packets, modulated and encoded low-speed service data and high-speed raw service data to the routing protocol processing module, receives re-framed modulated and encoded low-speed service data and high-speed raw service data, sends the modulated and encoded low-speed service data to the low-speed AD / DA conversion unit, and sends the high-speed raw service data to the high-performance computing unit; receives low-speed service data sent by the low-speed AD / DA conversion unit and second high-speed raw service data sent by the high-speed waveform processing unit, and transmits the low-speed service data and the second high-speed raw service data to the high-performance computing unit.

[0045] The satellite-borne routing unit includes a first satellite-borne routing unit and a second satellite-borne routing unit.

[0046] As shown in Figure 4As shown, the microwave photon frequency conversion exchange unit comprises a multi-path microwave electro-optical mixer, an optical switch matrix, a first multi-path microwave photoelectric frequency divider, a second multi-path microwave photoelectric frequency divider and a third multi-path microwave photoelectric frequency divider; wherein the multi-path microwave electro-optical mixer: receives multi-path intermediate frequency electrical signals of the low-speed AD / DA conversion unit and multi-path optical modulation signals of the high-speed waveform processing unit, performs microwave photon electro-optical modulation on the multi-path intermediate frequency electrical signals to generate multi-path optical carrier radio frequency signals, performs wavelength division multiplexing on the multi-path optical carrier radio frequency signals to obtain a combined optical signal, and sends the combined optical signal and the multi-path optical modulation signals to the optical switch matrix; performs wavelength division multiplexing on the multi-path optical modulation signals to obtain a combined optical modulation signal, and sends the combined optical modulation signal to the optical switch matrix; the optical switch matrix: receives the combined optical signal, performs channel mapping switching to obtain a mapping switched optical signal, and transmits the mapping switched optical signal to the first multi-path microwave photoelectric frequency divider, the second multi-path microwave photoelectric frequency divider and the third multi-path microwave photoelectric frequency divider respectively; receives the combined optical modulation signal, and transmits the combined optical modulation signal to the third multi-path microwave photoelectric frequency divider; the first multi-path microwave photoelectric frequency divider: receives the mapping switched optical signal, performs wavelength division demultiplexing on the mapping switched optical signal to obtain multi-path optical carrier radio frequency signals, performs microwave photon down-conversion processing on the multi-path optical carrier radio frequency signals to obtain multi-path radio frequency electrical signals, and sends the multi-path radio frequency electrical signals to microwave radio frequency ports of the integrated anti-sky microstrip antenna; the second multi-path microwave photoelectric frequency divider: receives the mapping switched optical signal, performs wavelength division demultiplexing on the mapping switched optical signal to obtain multi-path optical carrier radio frequency signals, performs microwave photon down-conversion processing on the multi-path optical carrier radio frequency signals to obtain multi-path radio frequency electrical signals, and sends the multi-path radio frequency electrical signals to microwave radio frequency ports of the integrated anti-ground microstrip antenna; the third multi-path microwave photoelectric frequency divider: receives the mapping switched optical signal, performs wavelength division demultiplexing on the mapping switched optical signal to obtain multi-path optical carrier radio frequency signals, performs microwave photon down-conversion processing on the multi-path optical carrier radio frequency signals to obtain multi-path radio frequency electrical signals, and sends the multi-path radio frequency electrical signals to microwave radio frequency ports of the laser / W-band microwave common-aperture inter-satellite and earth terminal.

[0047] The first multi-path microwave photoelectric frequency divider receives a multi-path first radio frequency electrical signal from a comprehensive anti-sky microwave antenna, performs electro-optical modulation on the multi-path first radio frequency electrical signal to generate a multi-path second optical carrier radio frequency signal, performs wavelength division multiplexing processing on the multi-path second optical carrier radio frequency signal to obtain a second combined optical signal, and transmits the second combined optical signal to an optical switch matrix; the second multi-path microwave photoelectric frequency divider receives a multi-path second radio frequency electrical signal from a comprehensive anti-ground microwave antenna, performs electro-optical modulation on the multi-path second radio frequency electrical signal to generate a multi-path second optical carrier radio frequency signal, performs wavelength division multiplexing processing on the multi-path second optical carrier radio frequency signal to obtain a second combined optical signal, and transmits the second combined optical signal to the optical switch matrix; the third multi-path microwave photoelectric frequency divider receives a wired optical modulation signal and a wired radio frequency electrical signal, performs electro-optical modulation on the wired radio frequency electrical signal to generate a multi-path second optical carrier radio frequency signal, performs wavelength division multiplexing combined processing on the multi-path second optical carrier radio frequency signal and the wired optical modulation signal to obtain a second combined optical signal, and transmits the second combined optical signal to the optical switch matrix; the optical switch matrix receives the second combined optical signal, performs channel mapping switching on the second combined optical signal to obtain a mapping switched second optical signal, and transmits the mapping switched second optical signal to a multi-path microwave electro-optical frequency mixer; and the multi-path microwave electro-optical frequency mixer receives the mapping switched second optical signal, performs wavelength division demultiplexing on the mapping switched second optical signal to obtain a multi-path second optical modulation signal and a multi-path second optical carrier radio frequency signal, transmits the multi-path second optical modulation signal to an optical port of a high-speed waveform processing unit, performs microwave photon down-conversion processing on the multi-path second optical carrier radio frequency signal to obtain a multi-path second intermediate frequency electrical signal, and transmits the multi-path second intermediate frequency electrical signal to an intermediate frequency port of a low-speed AD / DA conversion unit.

[0048] The multi-path microwave electro-optical frequency mixer is connected to the optical switch matrix through an optical fiber, and the optical switch matrix is connected to the first multi-path microwave photoelectric frequency divider, the second multi-path microwave photoelectric frequency divider, and the third multi-path microwave photoelectric frequency divider through optical fibers.

[0049] The software-defined multi-system satellite communication payload system further comprises a master control unit, wherein the master control unit is connected to the on-board routing unit. The master control unit is used to realize system working mode data flow control, computing power resource management, waveform processing task scheduling, and a standard Ethernet remote control and telemetry interface with a satellite computer.

[0050] The software-defined multi-system satellite communication payload system further comprises an on-board storage unit, wherein the on-board storage unit is connected to the on-board routing unit.

[0051] As Figure 1As shown, the software-defined radio-based multi-system satellite communication payload system includes on-board routing units (on-board routing unit 1 and on-board routing unit 2), master control units (master control unit 1 and master control unit 2), microwave photon frequency conversion switching units, integrated space-to-satellite microwave antennas, integrated space-to-ground microwave antennas, and multiple on-board storage units, high-performance computing units, low-speed AD / DA conversion units, high-speed waveform processing units, and laser / W-band microwave co-aperture inter-satellite and inter-satellite-terminal units configured on demand.

[0052] The data and control buses inside the system are interconnected by optical fibers using standard Ethernet protocols, the intermediate frequency signals and radio frequency signals are interconnected by standard SMA cables, and the laser signals are interconnected by standard optical fibers. All data, control, and signal interconnection protocols and interface standards are standardized to form a universal system architecture and functional units. Routing switching, waveform processing, storage, microwave photon frequency conversion channels, and laser / W-band microwave inter-satellite links can be flexibly expanded according to different satellite requirements.

[0053] The integrated space-to-satellite microwave antenna receives multiple radio frequency signals input by the microwave photon frequency conversion switching unit and converts them into corresponding multiple wireless signals for transmission to other satellites. The integrated space-to-satellite microwave antenna receives multiple first wireless signals transmitted by other satellites and converts them into corresponding multiple first radio frequency signals for transmission to the microwave photon frequency conversion switching unit. The integrated space-to-satellite microwave antenna supports high integration of multiple frequency band functions, achieving miniaturization of the space-to-satellite microwave antenna.

[0054] The integrated space-to-ground microwave antenna receives multiple radio frequency signals input by the microwave photon frequency conversion switching unit and converts them into corresponding multiple wireless signals for transmission to ground stations or ground terminals. The integrated space-to-ground microwave antenna receives multiple second wireless signals transmitted by ground stations or ground terminals and converts them into corresponding multiple second radio frequency signals for transmission to the microwave photon frequency conversion switching unit. The integrated space-to-ground microwave antenna supports high integration of multiple frequency band functions, achieving miniaturization of the space-to-ground microwave antenna.

[0055] The laser / W-band microwave co-aperture inter-satellite and inter-satellite-terminal unit receives spatial optical signals from other satellites or ground stations and couples them into wired optical modulation signals. It receives W-band wireless signals and converts them into wired radio frequency electrical signals. The obtained wired optical modulation signals and wired radio frequency electrical signals are transmitted to the microwave photon frequency conversion switching unit. The laser / W-band microwave co-aperture inter-satellite and inter-satellite-terminal unit receives multiple optical modulation signals and multiple radio frequency electrical signals input by the microwave photon frequency conversion switching unit and converts them into first spatial optical wireless signals and first W-band wireless signals, respectively. The first spatial optical wireless signals and the first W-band wireless signals are transmitted to other satellites or ground stations. The laser / W-band microwave co-aperture inter-satellite and inter-satellite-terminal unit supports high integration of laser / W-band microwave signal transceiver equipment, achieving miniaturization of the payload.

[0056] The microwave photon frequency conversion and switching unit receives the multiple intermediate frequency electrical signals of the low-speed AD / DA conversion unit and the multiple optical modulation signals of the high-speed waveform processing unit, performs microwave photon electro-optical modulation on the multiple intermediate frequency electrical signals to generate multiple optical carrier radio frequency signals, performs wavelength division multiplexing on the multiple optical carrier radio frequency signals to be sent to the integrated-to-sky microwave antenna, the integrated-to-ground microwave antenna and the laser / W-band microwave co-aperture inter-orbit and earth terminal, combines the multiple optical carrier radio frequency signals into one optical signal, and performs wavelength division demultiplexing on the multiple optical signals in the satellite cabin to transmit the optical carrier radio frequency signals to the integrated-to-sky microwave antenna, the integrated-to-ground microwave antenna and the laser / W-band microwave co-aperture inter-orbit and earth terminal. The optical carrier radio frequency signals are subjected to microwave photon down-conversion to obtain multiple radio frequency electrical signals and are sent to the corresponding microwave radio frequency ports of the integrated-to-sky microwave antenna, the integrated-to-ground microwave antenna and the laser / W-band microwave co-aperture inter-orbit and earth terminal. The optical modulation signals are sent to the corresponding optical ports of the laser / W-band microwave co-aperture inter-orbit and earth terminal. The microwave photon frequency conversion and switching unit supports the conversion and switching mapping between the intermediate frequency electrical signals, the microwave radio frequency signals and the laser signals, supports the high integration of different frequency conversion functions, and realizes the miniaturization of the payload hardware.

[0057] The low-speed AD / DA conversion unit receives the modulated and encoded low-speed service data from the on-board routing unit 1 or the on-board routing unit 2, obtains multiple intermediate frequency electrical signals through DA conversion, and sends the multiple intermediate frequency electrical signals to the microwave photon frequency conversion and switching unit. The low-speed AD / DA conversion unit receives the multiple second intermediate frequency signals of the microwave photon frequency conversion and switching unit, performs AD sampling, and sends the low-speed service data to the on-board routing unit 1 or the on-board routing unit 2.

[0058] The high-speed waveform processing unit receives high-speed raw service data from the on-board routing unit 1 or the on-board routing unit 2, performs high-speed laser modulation coding and other processing, obtains an optical modulation signal, and sends the optical modulation signal to the microwave photon frequency conversion switching unit; receives the multi-path second optical modulation signal of the microwave photon frequency conversion switching unit, performs demodulation, decoding and other processing to obtain high-speed raw service data, and sends the high-speed raw service data to the on-board routing unit 1 or the on-board routing unit 2.

[0059] The high-performance computing unit receives raw service data from the on-board routing unit 1 or the on-board routing unit 2, completes modulation, coding and other processing of the raw service data, and sends the processed data to the on-board routing unit 1 or the on-board routing unit 2; receives the modulated and coded low-speed service data sent by the low-speed AD / DA conversion unit from the on-board routing unit 1 or the on-board routing unit 2, performs demodulation, decoding and other processing to obtain low-speed raw service data, and sends the low-speed raw service data back to the on-board routing unit 1 or the on-board routing unit 2; receives the modulated and coded high-speed service data sent by the high-speed waveform processing unit from the on-board routing unit 1 or the on-board routing unit 2, performs demodulation, decoding and other processing to obtain high-speed raw service data, and sends the high-speed raw service data back to the on-board routing unit 1 or the on-board routing unit 2; the high-performance computing unit supports high integration and miniaturization of different systems and different types of processing functions.

[0060] The on-board routing unit 1 and the on-board routing unit 2 are used for routing communication of satellite local, inter-satellite, and satellite-ground link data, and complete functions such as network topology discovery, state awareness, routing planning, and on-orbit broadcasting; and are used for exchanging Ethernet data and instructions between satellite local service data equipment, and the system internal master unit, the microwave photon frequency conversion switching unit, the on-board storage unit, the high-performance computing unit, the low-speed AD / DA conversion unit, and the high-speed waveform processing unit.

[0061] The master unit 1 and the master unit 2 are used for realizing system working mode data flow control, computing resource management, waveform processing task scheduling, and a standard Ethernet remote control and telemetry interface with a satellite computer.

[0062] The on-board storage unit is used for realizing storage of system data and waveform processing applications APP.

[0063] The on-board routing unit structure is composed of Figure 2As shown, it is composed of 1 routing protocol processing module, 1 Ethernet switching module, and a certain number of optical-electric conversion modules configured on demand, wherein the routing protocol processing module receives routing protocol messages and user Ethernet data packets from the Ethernet switching module, performs routing information analysis and routing calculation on the routing protocol messages, re-frames the user Ethernet data packets according to the routing calculation results, and sends them to the Ethernet switching module; the Ethernet switching module is configured with multiple Ethernet switching ports as needed to complete the exchange of standard Ethernet service data within the system; receives the modulated and coded Ethernet data packets of the high-performance computing unit, and sends them to the low-speed AD / DA conversion unit or the high-speed waveform processing unit; receives the Ethernet data packets of the low-speed AD / DA conversion unit or the high-speed waveform processing unit, and forwards them to the high-performance computing unit for demodulation and decoding processing, and sends the demodulated and decoded data packets to the routing protocol processing module; receives the Ethernet data packets of the routing protocol processing module, and sends them to the high-performance computing unit, the storage unit, or the satellite local service data equipment according to the routing calculation results; receives the control instructions from the main control unit, analyzes the instruction content, and sends them to other functional units as needed; receives the telemetry state acquisition instructions from the main control unit, analyzes the instruction content, sends them to other functional units as needed, and forwards the return telemetry information of other functional units to the main control unit; the optical-electric conversion module is used to complete the conversion between the electrical signals of the Ethernet switching module and the external optical signals of the on-board routing unit.

[0064] The main control unit is composed of Figure 3 as shown, it is composed of 1 control management CPU module, 1 Ethernet protocol processing module, 1 SSD memory, and 3 optical-electric conversion modules, and the control management CPU module and the Ethernet protocol processing module are interconnected through a PCIE bus; wherein the control management CPU module is used to complete system control, computing resource management, and waveform processing task scheduling, receives the remote control instructions of the satellite computer through the Ethernet protocol processing module and completes instruction analysis and execution, forwards the instructions to the on-board routing unit through the Ethernet protocol processing module according to the instruction content, collects system telemetry information through the Ethernet protocol processing module and feeds back to the satellite computer, the Ethernet protocol processing module is used to receive the PCIE protocol instructions and data of the control management CPU module, convert them into Ethernet protocol, and send them to the corresponding optical-electric conversion modules interconnected with the satellite computer and the on-board routing unit; receives the Ethernet protocol instructions and data sent by the optical-electric conversion modules interconnected with the satellite computer and the on-board routing unit, converts them into PCIE protocol, and completes data acquisition and reception by the control management CPU module; the SSD memory is used to store the operating system and file system of the control management CPU module; the optical-electric conversion module is used to complete the optical-electric conversion of Ethernet data packets.

[0065] The microwave photon frequency conversion exchange unit is composed of Figure 4As shown, it is composed of a multi-path microwave electro-optical mixer, an optical switch matrix, a multi-path microwave photoelectric frequency divider 1, a multi-path microwave photoelectric frequency divider 2 and a multi-path microwave photoelectric frequency divider 3, and the multi-path microwave electro-optical mixer, the multi-path microwave photoelectric frequency divider 1, the multi-path microwave photoelectric frequency divider 2 and the multi-path microwave photoelectric frequency divider 3 are interconnected with the optical switch matrix through optical fibers. Among them, the multi-path microwave electro-optical mixer receives intermediate frequency electrical signals from a plurality of low-speed AD / DA conversion units and optical modulation signals from a plurality of high-speed waveform processing units, converts the multi-path intermediate frequency electrical signals into multi-path optical carrier radio frequency signals through microwave photon electro-optical modulation, performs wavelength division multiplexing on the multi-path optical carrier radio frequency signals for transmission to the microwave channel to space, the microwave channel to ground, the laser / W-band microwave co-aperture inter-satellite terminal and the multi-path optical modulation signals, and combines them into 1 optical signal, and sends the combined 4 optical signals to the optical switch matrix; receives 4 optical signals from the optical switch matrix, performs wavelength division demultiplexing to obtain multi-path optical carrier radio frequency signals and multi-path optical modulation signals, then performs microwave photon down-conversion on the multi-path optical carrier radio frequency signals to obtain multi-path intermediate frequency electrical signals and sends them to the corresponding intermediate frequency ports of the corresponding low-speed AD / DA conversion units, and sends the multi-path optical modulation signals to the corresponding high-speed waveform processing units. The optical switch matrix receives control instructions from the main control unit to complete the channel mapping switching of the optical signals; receives the multi-path optical signals from the multi-path microwave electro-optical mixer, completes the channel mapping switching, and transmits the switched optical signals to the multi-path microwave photoelectric frequency divider 1, the multi-path microwave photoelectric frequency divider 2 and the multi-path microwave photoelectric frequency divider 3; receives the multi-path optical signals from the multi-path microwave photoelectric frequency divider 1, the multi-path microwave photoelectric frequency divider 2 and the multi-path microwave photoelectric frequency divider 3, completes the channel mapping switching, and transmits the switched optical signals to the multi-path microwave electro-optical mixer. The multi-path microwave photoelectric frequency divider 1 receives optical signals from the optical switch matrix, performs microwave photon down-conversion to obtain multi-path radio frequency electrical signals and sends them to the corresponding ports of the integrated space microwave antenna; receives multi-path radio frequency electrical signals from the integrated space microwave antenna, performs microwave photon electro-optical modulation to obtain multi-path optical carrier radio frequency signals, performs wavelength division multiplexing to combine them into 1 optical signal, and sends the optical signal to the optical switch matrix. The multi-path microwave photoelectric frequency divider 2 receives optical signals from the optical switch matrix, performs microwave photon down-conversion to obtain multi-path radio frequency electrical signals and sends them to the corresponding ports of the integrated ground microwave antenna; receives multi-path radio frequency electrical signals from the integrated ground microwave antenna, performs microwave photon electro-optical modulation to obtain multi-path optical carrier radio frequency signals, performs wavelength division multiplexing to combine them into 1 optical signal, and sends the optical signal to the optical switch matrix.The multi-path microwave photoelectric frequency divider 3 receives one optical modulation signal and one optical carrier radio frequency signal from the optical switch matrix, performs wavelength division multiplexing on the one optical modulation signal to obtain a plurality of optical modulation signals, and sends the plurality of optical modulation signals to corresponding optical ports of the laser / W-band microwave co-aperture inter-satellite and space-ground terminal. The one optical carrier radio frequency signal is wavelength division multiplexed to obtain a plurality of optical carrier radio frequency signals, which are subjected to microwave photon down-conversion processing to obtain a plurality of radio frequency electrical signals and are sent to corresponding radio frequency ports of the laser / W-band microwave co-aperture inter-satellite and space-ground terminal. The multi-path microwave photoelectric frequency divider 3 receives a plurality of radio frequency electrical signals and a plurality of optical modulation signals from the laser / W-band microwave co-aperture inter-satellite and space-ground terminal, performs microwave photon electro-optical modulation conversion on the plurality of radio frequency electrical signals to obtain a plurality of optical carrier radio frequency signals, and performs wavelength division multiplexing on the plurality of optical carrier radio frequency signals and the plurality of optical modulation signals to obtain one optical modulation signal and one optical carrier radio frequency signal, which are sent to the optical switch matrix.

[0066] The high-performance computing unit structure is composed of one Ethernet protocol processing module, one control management CPU module, one SSD memory, and a plurality of GPU general computing modules configured as needed, as shown in Figure 5 The Ethernet protocol processing module is configured to receive PCIE protocol instructions and data of the control management CPU module, convert the PCIE protocol instructions and data into Ethernet protocol instructions and data, and send the Ethernet protocol instructions and data to the photoelectric conversion module interconnected with the on-board routing unit. The Ethernet protocol processing module is also configured to receive Ethernet protocol instructions and data sent by the photoelectric conversion module interconnected with the on-board routing unit, convert the Ethernet protocol instructions and data into PCIE protocol instructions and data, and send the PCIE protocol instructions and data to the control management CPU module for data collection and reception. The control management CPU module is configured to receive remote control instructions of the main control unit through the Ethernet protocol processing module, complete instruction analysis and execution, and complete GPU computing resource management and waveform processing task scheduling management. The control management CPU module is also configured to collect internal telemetry information and processed data packets through the PCIE interface, and send the internal telemetry information and the processed data packets to the main control unit through the Ethernet protocol processing module. The SSD memory is configured to store the operating system, file system, and container images of various applications of the CPU. The GPU general computing module is configured to receive service data and control instructions forwarded by the control management CPU module from the Ethernet protocol processing module, complete modulation, demodulation, encoding, decoding, and other processing as needed, and send its own telemetry information and processed Ethernet data packets to the control management CPU module.

[0067] Specifically, as shown in Figure 6As shown, in this embodiment, the multi-system satellite communication payload system based on software-defined radio has a total of 2 10Gbps / 100Gbps co-orbit two-way laser / W-band microwave co-aperture inter-satellite links, 2 10Gbps / 100Gbps non-co-orbit two-way laser / W-band microwave co-aperture inter-satellite links, 2 Ka-band downlinks to the ground, 2 X-band downlinks to the ground, 1 S-band two-way TT&C link to the ground, 1 L-band GNSS navigation signal uplink, 1 S-band Beidou regional short message receiving link, 1 L-band two-way Beidou global short message link, and 1 S-band two-way relay TT&C link.

[0068] The system data and control bus is interconnected by optical fiber using a standard Ethernet protocol. The on-board routing unit is externally interconnected with the satellite local service data equipment through a 100G standard Ethernet. The main control unit is externally interconnected with the satellite service computer through a standard 10G Ethernet. The on-board routing unit is internally interconnected with the on-board storage unit, high-performance computing unit, low-speed AD / DA conversion unit, and high-speed waveform processing unit through a 100G standard Ethernet. The on-board routing unit is internally interconnected with the main control unit and microwave photon frequency conversion unit through a standard 10G Ethernet. The intermediate frequency signal and radio frequency signal are interconnected by a standard SMA cable. The microwave photon frequency conversion unit is interconnected with the laser signal between the laser / W-band microwave co-aperture inter-satellite and ground terminal through a standard optical fiber. The system data, control, and signal interconnection protocols and interface standards are standardized to form a universal system architecture and functional unit. The network switching, computing power, integrated waveform processing, and microwave photon frequency conversion capabilities can be flexibly expanded to meet different satellite requirements.

[0069] The system improves the fault tolerance capability in the fault mode through cold backup settings of key components. The on-board routing unit 1 and the on-board routing unit 2 are cold backups for each other and are externally connected to the standard Ethernet interface through optical fibers to realize the transmission and reception of local high-speed service data. The main control unit 1 and the main control unit 2 are cold backups for each other and are externally connected to the standard Ethernet interface through optical fibers to realize the interconnection with the satellite service computer and the system remote control and telemetry functions.

[0070] The multi-system satellite communication payload system based on software-defined radio includes the on-board routing unit 1, on-board routing unit 2, main control unit 1, main control unit 2, microwave photon frequency conversion unit, integrated space microwave antenna, integrated ground microwave antenna, on-board storage unit 1, on-board storage unit 2, 5 high-performance computing units with consistent structures, 1 low-speed AD / DA conversion unit, 4 high-speed waveform processing units with consistent structures, and 4 laser / W-band microwave co-aperture inter-satellite and ground terminal units with consistent structures. Among them,

[0071] The satellite-to-ground microwave antenna is used to realize the receiving and transmitting of multiple frequency band microwave radio frequency signals in the satellite-to-ground direction, supports the high integration of 2 Ka frequency band downlinks, 2 X frequency band downlinks, 1 S frequency band bidirectional ground control link and 1 L frequency band GNSS navigation signal receiving link functions, and realizes the miniaturization of the satellite-to-ground microwave antenna; 3 radio frequency signals input by the microwave photon frequency conversion switching unit are converted into 3 wireless signals and transmitted to the ground station or the ground terminal, and 2 wireless signals transmitted by the ground station or the ground terminal are converted into 2 radio frequency signals and transmitted to the microwave photon frequency conversion switching unit; the satellite-to-ground microwave antenna supports the high integration of multiple frequency band functions, and realizes the miniaturization of the satellite-to-ground microwave antenna.

[0072] The satellite-to-ground microwave antenna is used to realize the receiving and transmitting of multiple frequency band microwave radio frequency signals in the satellite-to-ground direction, supports the high integration of 2 Ka frequency band downlinks, 2 X frequency band downlinks, 1 S frequency band bidirectional ground control link and 1 L frequency band GNSS navigation signal receiving link functions, and realizes the miniaturization of the satellite-to-ground microwave antenna; 3 radio frequency signals input by the microwave photon frequency conversion switching unit are converted into 3 wireless signals and transmitted to the ground station or the ground terminal, and 2 wireless signals transmitted by the ground station or the ground terminal are converted into 2 radio frequency signals and transmitted to the microwave photon frequency conversion switching unit; the satellite-to-ground microwave antenna supports the high integration of multiple frequency band functions, and realizes the miniaturization of the satellite-to-ground microwave antenna.

[0073] The laser / W band microwave co-aperture inter-satellite and earth terminal 1 is used to realize the simultaneous receiving and transmitting of laser and W band signals of the first same-orbit bidirectional inter-satellite link, supports the high integration of laser and W band microwave main reflectors, steering mechanisms and other load devices based on the co-aperture architecture of laser microwave feeding link integration, realizes the miniaturization of the load, receives the spatial optical signals of other satellites or ground stations and couples them into wired optical signals, receives W band wireless signals and converts them into wired radio frequency electrical signals, and sends the obtained wired optical signals and wired radio frequency electrical signals to the microwave photon frequency conversion switching unit; the wired optical signals and wired radio frequency electrical signals input by the microwave photon frequency conversion switching unit are converted into wireless signals respectively and sent to other satellites or ground stations.

[0074] The laser / W band microwave co-aperture inter-satellite and earth terminal 2 is used to realize the simultaneous receiving and transmitting of laser and W band signals of the second same-orbit bidirectional inter-satellite link; the laser / W band microwave co-aperture inter-satellite and earth terminal 3 is used to realize the simultaneous receiving and transmitting of laser and W band signals of the first different-orbit bidirectional inter-satellite link; and the laser / W band microwave co-aperture inter-satellite and earth terminal 4 is used to realize the simultaneous receiving and transmitting of laser and W band signals of the second different-orbit bidirectional inter-satellite link.

[0075] The microwave photon frequency conversion switching unit completes the mutual conversion and switching mapping of the intermediate frequency electrical signal, the microwave radio frequency signal and the laser signal through a 16x16 frequency conversion switching array, supports the high integration of different frequency conversion functions, and realizes the miniaturization of the payload hardware; the receiving low-speed AD / DA conversion unit receives 11 intermediate frequency electrical signals and 4 optical modulation signals of the high-speed waveform processing unit, generates 11 optical carrier radio frequency signals through microwave photon electro-optical modulation for the 11 intermediate frequency electrical signals, performs wavelength division multiplexing and combining for the 11 optical signals, and transmits the 11 optical signals to the integrated space-to-ground microwave antenna, the integrated space-to-space microwave antenna and the laser / W-band microwave co-aperture inter-orbit and earth terminal. The 11 optical signals are wavelength demultiplexed in the satellite cabin, transmitted to the integrated space-to-ground microwave antenna, the integrated space-to-space microwave antenna and the laser / W-band microwave co-aperture inter-orbit and earth terminal, and the optical carrier radio frequency signals are processed by microwave photon down-conversion to obtain 11 radio frequency electrical signals and transmitted to the corresponding microwave radio frequency port. The 4 optical modulation signals are transmitted to the corresponding optical port of the laser / W-band microwave co-aperture inter-orbit and earth terminal; 9 radio frequency electrical signals are received from the microwave radio frequency port of the integrated space-to-ground microwave antenna, the integrated space-to-space microwave antenna and the laser / W-band microwave co-aperture inter-orbit and earth terminal, and 4 optical modulation signals are received from the optical port of the laser / W-band microwave co-aperture inter-orbit and earth terminal. The 9 radio frequency electrical signals are optically modulated to generate 9 optical carrier radio frequency signals, and the received 4 optical modulation signals and 9 optical carrier radio frequency signals are wavelength division multiplexed and combined into 1 optical signal. The 4 optical modulation signals and 9 optical carrier radio frequency signals are wavelength demultiplexed in the satellite cabin, transmitted to the low-speed AD / DA conversion unit and the high-speed waveform processing unit, and the 4 optical modulation signals are transmitted to the corresponding optical port of the high-speed waveform processing unit. The 9 optical carrier radio frequency signals are processed by microwave photon down-conversion to obtain 9 intermediate frequency electrical signals and transmitted to the corresponding intermediate frequency port of the low-speed AD / DA conversion unit; the microwave photon frequency conversion switching unit supports the mutual conversion and switching mapping of the intermediate frequency electrical signal, the microwave radio frequency signal and the laser signal, supports the high integration of different frequency conversion functions, and realizes the miniaturization of the payload hardware.

[0076] The low-speed AD / DA conversion unit receives the modulated and encoded low-speed service data from the on-board routing unit 1 or the on-board routing unit 2, obtains multiple intermediate frequency signals through DA conversion, and transmits the multiple intermediate frequency signals to the microwave photon frequency conversion switching unit; receives the multiple intermediate frequency signals of the microwave photon frequency conversion switching unit, performs AD sampling, and transmits the low-speed service data to the on-board routing unit 1 or the on-board routing unit 2.

[0077] The high-speed waveform processing unit is used for modulation and coding processing of laser high-speed service data; receives high-speed raw service data from the on-board routing unit 1 or the on-board routing unit 2, performs high-speed laser modulation and coding processing, obtains an optical modulation signal, and sends the optical modulation signal to the microwave photon frequency conversion switching unit; receives the optical modulation signal of the microwave photon frequency conversion switching unit, performs demodulation and decoding processing, and obtains high-speed raw service data, and sends the high-speed raw service data to the on-board routing unit 1 or the on-board routing unit 2.

[0078] The high-performance computing units 1-4 are used for interconnection with the on-board routing unit, control according to the instruction of the master control unit, and transceive laser high-speed service data of four laser / W-band microwave co-aperture inter-satellite and inter-satellite terminals, complete coding, modulation, demodulation, decoding and other processing according to waveform parameters, and can realize high integration of laser channel and W / Ka / S / L multiple frequency band microwave channel service data processing function and miniaturization of load equipment; receive high-speed raw service data from the on-board routing unit 1 or the on-board routing unit 2, complete modulation, coding and other processing of high-speed raw service data, and send the processed data to the on-board routing unit 1 or the on-board routing unit 2; receive the modulated and coded high-speed service data sent by the high-speed waveform processing unit from the on-board routing unit 1 or the on-board routing unit 2, perform demodulation and decoding processing to obtain high-speed raw service data, and send the high-speed raw service data back to the on-board routing unit 1 or the on-board routing unit 2.

[0079] The high-performance computing unit 5 is used for interconnection with the on-board routing unit, transceives service data of communication links other than laser, and completes intermediate frequency waveform generation output (including coding, modulation, etc.) and input intermediate frequency waveform analysis (including demodulation, decoding, etc.) according to waveform parameters; according to the specific needs of the embodiment, the high-performance computing unit 5 efficiently integrates all waveform processing functions of the system for space-to-ground transmission under the control and management of the master control unit based on computing resource virtualization technology, including 2 Ka-band ground-to-space transmission links, 2 X-band ground-to-space transmission links, 1 S-band bidirectional earth measurement and control link, 1 L-band GNSS navigation signal receiving link, 1 S-band relay bidirectional measurement and control link, 1 S-band regional short message Beidou uplink, and 1 L-band global short message Beidou bidirectional link.

[0080] The on-board routing unit 1 and the on-board routing unit 2 are used for routing communication of satellite local, inter-satellite, and inter-satellite link data, and complete network topology discovery, state perception, routing planning, on-orbit broadcasting, and other functions; and are used for standard gigabit network / 100G Ethernet data and instruction exchange between satellite local service data equipment, and the master control unit, the microwave photon frequency conversion switching unit, the on-board storage unit, the high-performance computing unit, the low-speed AD / DA conversion unit, and the high-speed waveform processing unit inside the system.

[0081] The master control unit 1 and the master control unit 2 are used to realize system working mode data flow control, computing resource management, waveform processing task scheduling, and a standard gigabit Ethernet remote control and telemetry interface with a satellite computer.

[0082] The on-board storage unit 1 and the on-board storage unit 2 are used to realize storage of system data and waveform processing applications APP.

[0083] As Figure 7 , according to the capacity requirement of a future typical on-board waveform processing capability on routing switching, the on-board routing unit is configured to be composed of 1 routing protocol processing module, 1 Ethernet switching module, and 16 optoelectronic conversion modules, the routing protocol processing module and the Ethernet switching module are interconnected through 1 100G standard Ethernet electrical interface; wherein,

[0084] The routing protocol processing module receives routing protocol messages and user Ethernet data packets from the Ethernet switching module, performs routing information analysis and routing calculation on the routing protocol messages, re-frames the user Ethernet data packets according to the routing calculation results, and sends them to the Ethernet switching module;

[0085] The Ethernet switching module port is configured as 13 100G standard Ethernet and 3 standard gigabit network, used to complete standard Ethernet service data exchange within the communication load system;

[0086] The Ethernet switching module is configured with 16 100G standard Ethernet switching ports, which can be compatible with the gigabit network protocol, used to complete standard Ethernet service data exchange within the system; receives the modulation and coding Ethernet data packets of the high-performance computing unit, and sends them to the low-speed AD / DA conversion unit or the high-speed waveform processing unit; receives the Ethernet data packets of the low-speed AD / DA conversion unit or the high-speed waveform processing unit, and forwards them to the high-performance computing unit for demodulation and decoding processing; receives the Ethernet data packets of the routing protocol processing module, and sends them to the high-performance computing unit, the storage unit, or the satellite local service data device according to the routing calculation results; receives the control instructions from the master control unit, analyzes the instruction content, and sends them to other functional units as needed; receives the telemetry state acquisition instructions from the master control unit, analyzes the instruction content, and sends them to other functional units as needed and forwards the return telemetry information of other functional units to the master control unit;

[0087] The 16 optoelectronic conversion modules are used to complete optical-electrical conversion of the input and output signals of the Ethernet switching module, and are interconnected with 5 high-performance computing units, 4 high-speed waveform processing units, 1 low-speed AD / DA conversion unit, 2 on-board storage units, 2 master control units, 1 microwave photon frequency conversion unit, and 1 satellite local service data device through optical fibers respectively.

[0088] As Figure 8 , according to the capacity requirements of the main control unit for the typical future on-board waveform processing capacity, the main control unit is configured to be composed of 1 control management CPU module, 1 Ethernet protocol processing module, 1 SSD memory and 3 optoelectronic conversion modules, the control management CPU module and the Ethernet protocol processing module are interconnected through a PCIE4.0 x16 bus, the control management CPU module and the SSD memory are interconnected through a PCIE3.0 x4 bus, wherein,

[0089] The control management CPU module is used to complete system control, computing resource management and waveform processing task scheduling, receives remote control instructions from the satellite computer through the Ethernet protocol processing module and completes instruction analysis and execution, and forwards to the on-board routing unit according to the instruction content through the Ethernet protocol processing module; collects system telemetry information through the Ethernet protocol processing module and feeds back to the satellite computer;

[0090] The Ethernet protocol processing module is used to receive instructions and data of the control management CPU module through PCIE4.0 x16, convert them into Ethernet protocol and send them to the corresponding optoelectronic conversion module interconnected with the satellite computer and the on-board routing unit; receive Ethernet protocol instructions and data sent by the optoelectronic conversion module interconnected with the satellite computer and the on-board routing unit, convert them into PCIE4.0 x16 protocol, and complete data collection and reception by the control management CPU module;

[0091] The SSD memory is used to store the operating system and file system of the control management CPU module;

[0092] The optoelectronic conversion module is used to complete the optical-electric conversion of Ethernet data packets.

[0093] As Figure 9 , the microwave photon frequency conversion switching unit structure is composed of a plurality of microwave electro-optic mixers, a 4x4 optical switch matrix, a plurality of microwave photoelectric frequency dividers 1, a plurality of microwave photoelectric frequency dividers 2 and a plurality of microwave photoelectric frequency dividers 3, the plurality of microwave electro-optic mixers are arranged near the low-speed AD / DA conversion unit and the high-speed waveform processing unit inside the satellite cabin, the plurality of microwave photoelectric frequency dividers 1 are arranged near the integrated skyward microwave antenna, the plurality of microwave photoelectric frequency dividers 2 are arranged near the integrated groundward microwave antenna, the plurality of microwave photoelectric frequency dividers 3 are arranged near the laser / W-band microwave co-aperture inter-satellite and inter-space terminal, and the plurality of microwave electro-optic mixers, the plurality of microwave photoelectric frequency dividers 1, the plurality of microwave photoelectric frequency dividers 2 and the plurality of microwave photoelectric frequency dividers 3 are interconnected with the optical switch matrix through one optical fiber respectively, which can simplify the internal cable and optical cable network of the whole satellite and improve the system integration. Among them,

[0094] The multi-path microwave electro-optical mixer receives 11 intermediate frequency electrical signals from the low-speed AD / DA conversion unit and 4 optical modulation signals from the 4 high-speed waveform processing units, converts the 11 intermediate frequency electrical signals into 11 optical carrier radio frequency signals through microwave photon electro-optical modulation, performs wavelength division multiplexing on 2 optical carrier radio frequency signals for the space-to-sky transmission microwave channel, 5 optical carrier radio frequency signals for the sky-to-ground transmission microwave channel, 4 optical carrier radio frequency signals for the laser / W-band microwave co-aperture inter-satellite and satellite-ground terminal, and the 4 optical modulation signals, combines them into 1 optical signal, and sends the combined 4 optical signals to the optical switch matrix; receives the 4 optical signals from the optical switch matrix, performs wavelength division demultiplexing to obtain 9 optical carrier radio frequency signals and 4 optical modulation signals, then performs microwave photon down-conversion on the 9 optical carrier radio frequency signals to obtain 9 intermediate frequency electrical signals and sends them to the corresponding intermediate frequency ports of the low-speed AD / DA conversion unit, and sends the 4 optical modulation signals to the corresponding high-speed waveform processing units.

[0095] The optical switch matrix receives control instructions from the main control unit to complete channel mapping switching of optical signals; receives 3 optical carrier radio frequency signals and 1 optical modulation signal from the multi-path microwave electro-optical mixer, completes channel mapping switching, and transmits the switched optical signals to the multi-path microwave photoelectric frequency divider 1, the multi-path microwave photoelectric frequency divider 2, and the multi-path microwave photoelectric frequency divider 3; receives three optical carrier radio frequency signals and 1 optical modulation signal from the multi-path microwave photoelectric frequency divider 1, the multi-path microwave photoelectric frequency divider 2, and the multi-path microwave photoelectric frequency divider 3, completes channel mapping switching, and transmits the switched optical signals to the multi-path microwave electro-optical mixer.

[0096] The multi-path microwave photoelectric frequency divider 1 receives optical carrier radio frequency signals from the optical switch matrix, performs microwave photon down-conversion to obtain 2 radio frequency electrical signals, and sends them to the corresponding ports of the integrated skyward microwave antenna; receives 4 radio frequency electrical signals from the integrated skyward microwave antenna, performs microwave photon electro-optical modulation to obtain 4 optical carrier radio frequency signals, performs wavelength division multiplexing to combine them into 1 optical signal, and sends the combined optical signal to the optical switch matrix.

[0097] The multi-path microwave photoelectric frequency divider 2 receives optical carrier radio frequency signals from the optical switch matrix, performs microwave photon down-conversion to obtain 5 radio frequency electrical signals, and sends them to the corresponding ports of the integrated groundward microwave antenna; receives 5 radio frequency electrical signals from the integrated groundward microwave antenna, performs microwave photon electro-optical modulation to obtain multiple optical carrier radio frequency signals, performs wavelength division multiplexing to combine them into 1 optical signal, and sends the combined optical signal to the optical switch matrix.

[0098] The multi-channel microwave photoelectric frequency divider 3 receives the optical carrier radio frequency signal from the optical switch matrix, performs microwave photon down-conversion processing to obtain 4 W-band radio frequency electrical signals, and sends them to the corresponding radio frequency ports of the laser / W-band microwave co-aperture inter-satellite and satellite terminal; receives 4 W-band radio frequency electrical signals from the laser / W-band microwave co-aperture inter-satellite and satellite terminal, performs microwave photon electro-optical modulation to obtain 4 optical carrier radio frequency signals, and performs wavelength division multiplexing to obtain 1 optical signal, which is sent to the optical switch matrix.

[0099] The multi-channel microwave photoelectric frequency divider 3 receives the optical carrier radio frequency signal from the optical switch matrix, performs microwave photon down-conversion processing to obtain 4 W-band radio frequency electrical signals, and sends them to the corresponding radio frequency ports of the laser / W-band microwave co-aperture inter-satellite and satellite terminal; receives 4 W-band radio frequency electrical signals from the laser / W-band microwave co-aperture inter-satellite and satellite terminal, performs microwave photon electro-optical modulation to obtain 4 optical carrier radio frequency signals, and performs wavelength division multiplexing to obtain 1 optical signal, which is sent to the optical switch matrix.

[0100] As Figure 10 , according to the typical on-board waveform processing capability in the future, the high-performance computing unit is composed of 1 Ethernet protocol processing module, 1 control management CPU module, 1 SSD memory and 4 GPU general computing modules. Among them, the Ethernet protocol processing module is used to receive the PCIE4.0 x16 protocol instructions and data of the control management CPU module, convert them into Ethernet protocol, and send them to the photoelectric conversion module interconnected with the on-board routing unit; receive the Ethernet protocol instructions and data sent by the photoelectric conversion module interconnected with the on-board routing unit, convert them into PCIE4.0 x16 protocol, and complete data collection and reception by the control management CPU module; the control management CPU module receives the remote control instructions of the master control unit through the Ethernet protocol processing module and completes instruction analysis and execution, GPU computing resource management and waveform processing task scheduling management; collects internal telemetry information and processed data packets through the PCIE interface and sends them to the master control unit through the Ethernet protocol processing module; the SSD memory is used to store the operating system, file system and container image of various applications of the CPU; the GPU general computing module is used to receive the service data and control instructions from the Ethernet protocol processing module forwarded by the control management CPU module, complete modulation, demodulation, coding, decoding and other processing as needed, and send its telemetry information and processed Ethernet data packets to the control management CPU module.

[0101] The embodiment also provides a software-defined radio-based multi-system satellite communication payload resource management method, which comprises the following steps: a master control unit receives and analyzes a working mode instruction from a satellite computer to obtain a waveform processing task to be deployed; the master control unit compares the waveform processing task to be deployed with a currently running waveform processing task, divides tasks in the currently running waveform processing task that are the same as the waveform processing task to be deployed into tasks to be retained, divides other tasks into tasks to be stopped, and divides new tasks of the waveform processing task to be deployed; the master control unit compares the computing resource requirements of the tasks to be stopped and the new tasks; when the computing resource requirements of the tasks to be stopped are the same as the computing resource requirements of the new tasks, the master control unit closes a container image of the tasks to be stopped and replaces a container image of the new tasks; when the computing resource requirements of the tasks to be stopped are greater than the computing resource requirements of the new tasks, the master control unit closes the container image of the tasks to be stopped, deploys the container image of the new tasks, and releases idle computing resources according to a minimum computing resource strategy; and when the computing resource requirements of the tasks to be stopped are less than the computing resource requirements of the new tasks, the master control unit closes the container image of the tasks to be stopped, deploys the container image of the new tasks, and adds computing resources according to the minimum computing resource strategy.

[0102] The method further comprises the following steps: according to the latest resource allocation and task conditions, the master control unit updates a computing resource pool database and a task pool database maintained by the master control unit.

[0103] As Figure 11 The specific implementation of the software-defined radio-based multi-system satellite communication payload resource management method is as follows:

[0104] According to different requirements of user waveform processing of different applications and different frequency bands for computing power, the master control unit can configure multiple sets of high-performance computing units to complete user tasks or complete multiple user tasks through one set of high-performance computing units.

[0105] The high-performance computing unit is based on an operating system running platform software, completes the management of computing resources and application software in the unit, realizes the unified encapsulation and representation of computing resources in the unit through resource virtualization, and realizes the unified encapsulation and calling interface of user applications in the unit through container technology. Multiple different user processing tasks are stored in the form of APP in 2 pieces of SSD chips of the control management CPU module, the user processing task APP is called through the container, and the software definition of the waveform processing function is supported to be completed quickly on demand.

[0106] The master control unit runs platform software based on an operating system, collects resource usage states and waveform processing application working states of each high-performance computing unit based on middleware technology, and receives a working mode switching instruction input by the satellite computer. The working mode instruction is analyzed. In the dynamic switching process of the communication load in the on-orbit operation of different working modes, according to the required number of channels for concurrent waveform processing and time-sharing waveform processing and the configuration, combined with the resource occupation of the high-performance computing unit in the system, the waveform processing APP deployed in each high-performance computing unit is dynamically adjusted, the dynamic performance matching of the computing power resource allocation and the waveform processing task is realized, and the system performance is improved.

[0107] The waveform processing computing power resource management method is realized by the master control unit, and the specific steps are as follows:

[0108] 1) The master control unit receives and analyzes the working mode instruction from the satellite computer, and obtains the waveform processing task to be deployed;

[0109] 2) The master control unit compares the waveform processing task to be deployed with the currently running waveform processing task, divides the same tasks in the current task as the tasks to be reserved, divides the other tasks as the tasks to be stopped, and divides the new tasks of the task to be deployed;

[0110] 3) The master control unit compares the computing power resource needs of the current task to be stopped and the new task, and executes the following steps 4 to 6 according to the three cases of same, greater than and less than;

[0111] 4a) The master control unit closes the container image of the task to be stopped, and releases the idle computing power resources of the corresponding high-performance computing unit to the computing power resource pool;

[0112] 4b) The master control unit allocates the GPU computing power resources of the selected high-performance computing unit to the new task according to the minimum computing power resource strategy, and deploys the container image;

[0113] 5a) The master control unit closes the container image of the task to be stopped, and releases the idle computing power resources to the computing power resource pool database;

[0114] 5b) The master control unit pre-allocates GPU computing power resources for the new task according to the minimum computing power resource strategy;

[0115] 5c) The master control unit migrates part of the container images of the tasks to be reserved between different high-performance computing units, aggregates computing power resources, and further releases idle computing power resources to the computing power resource pool database;

[0116] 5d) The master control unit deploys the container image of the new task to the GPU module in the selected high-performance computing unit according to the computing power resource allocation;

[0117] 5e) The master unit executes the shutdown process of the idle high-performance computing unit or GPU module;

[0118] 6a) The master unit closes the container image of the task to be stopped, and releases the idle computing resource to the computing resource pool database;

[0119] 6b) The master unit pre-allocates computing resources for new tasks according to the minimum computing resource strategy;

[0120] 6c) The master unit executes the startup process of the newly selected high-performance computing unit or GPU module;

[0121] 6d) The master unit deploys the container image of the new task according to the computing resource allocation;

[0122] 7) According to the latest resource allocation and task situation, the master unit updates the computing resource pool database and task pool database maintained by it.

[0123] The embodiment realizes external data routing and internal optical and electrical data exchange through standardized hardware interfaces and Ethernet protocols, and the waveform processing capability covers all microwave frequency bands and laser bands required for satellite communication, and can be flexibly expanded according to different satellite requirements, and can realize the generalization and standardization of future space-based network information constellation system communication payloads.

[0124] The embodiment adopts a GPU-based high-performance computing unit to realize general waveform processing capability, which can support high integration of different system waveform processing capabilities on the same system; a microwave photon frequency conversion unit is adopted to realize general frequency conversion processing capability and in-orbit combining and remote transmission of multiple optical signals, and combined with the integrated architecture of the comprehensive anti-satellite microwave antenna, the comprehensive anti-satellite microwave antenna and the laser / W frequency band microwave co-aperture terminal, the internal cable and optical cable network of the whole satellite can be simplified, the problems of cable non-combining, large loss, heavy cable and complex cable network caused by traditional satellite internal interconnection through radio frequency cable can be solved, the system integration degree can be greatly improved, the weight and power consumption can be reduced, and the communication payload can be miniaturized.

[0125] The embodiment builds a computing resource pool through computing resource virtualization, realizes standardized packaging of system computing resources, and realizes standardized packaging of different communication waveform processing applications through container technology; on this basis, based on software-defined radio technology, platform management software is deployed on the operating system, which can realize rapid deployment and flexible reconstruction of different communication waveform processing applications, and dynamic and efficient matching of computing resources and different communication waveform processing applications, avoiding idle computing resources, improving resource sharing capability and system efficiency.

[0126] Although the present application has been disclosed with reference to the preferred embodiments, it is not intended to limit the present application, and any person skilled in the art can make possible changes and modifications to the technical solutions of the present application using the disclosed methods and technical contents without departing from the spirit and scope of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical solutions of the present application shall fall within the protection scope of the technical solutions of the present application.

Claims

1. A software defined multi-standard satellite communication payload system, characterized by The system comprises a satellite-borne routing unit, a microwave photon frequency conversion and switching unit, a comprehensive skyward microwave antenna, a comprehensive groundward microwave antenna, a high-performance computing unit, a low-speed AD / DA conversion unit, a high-speed waveform processing unit, and a laser / W-band microwave co-aperture inter-satellite and earth terminal. The comprehensive skyward microwave antenna receives multiple radio frequency electrical signals input by the microwave photon frequency conversion and switching unit, converts the multiple radio frequency signals into multiple wireless signals, and transmits the multiple wireless signals to other satellites; receives multiple first wireless signals transmitted by other satellites, converts the multiple first wireless signals into multiple first radio frequency electrical signals, and sends the multiple first radio frequency electrical signals to the microwave photon frequency conversion and switching unit. The comprehensive groundward microwave antenna receives multiple radio frequency electrical signals input by the microwave photon frequency conversion and switching unit, converts the multiple radio frequency signals into multiple wireless signals, and transmits the multiple wireless signals to a ground station or a ground terminal; receives multiple second wireless signals transmitted by the ground station or the ground terminal, converts the multiple second wireless signals into multiple second radio frequency electrical signals, and sends the multiple second radio frequency electrical signals to the microwave photon frequency conversion and switching unit. The laser / W-band microwave co-aperture inter-satellite and earth terminal receives a space optical signal from other satellites or a ground station, couples the space optical signal into a wired optical modulation signal; receives a W-band wireless signal, converts the W-band wireless signal into a wired radio frequency electrical signal, and sends the wired optical modulation signal and the wired radio frequency electrical signal to the microwave photon frequency conversion and switching unit; receives multiple optical modulation signals and multiple radio frequency electrical signals input by the microwave photon frequency conversion and switching unit, and converts the multiple optical modulation signals and the multiple radio frequency electrical signals into first space optical wireless signals and first W-band wireless signals, respectively, and sends the first space optical wireless signals and the first W-band wireless signals to other satellites or the ground station. The microwave photon frequency conversion and switching unit receives multiple intermediate frequency electrical signals from the low-speed AD / DA conversion unit and multiple optical modulation signals from the high-speed waveform processing unit, performs microwave photon electro-optical modulation on the multiple intermediate frequency electrical signals to generate multiple optical carrier radio frequency signals, performs wavelength division multiplexing on the multiple optical carrier radio frequency signals to obtain a combined optical signal, performs wavelength division demultiplexing on the combined optical signal to obtain multiple optical carrier radio frequency signals, performs microwave photon down-conversion on the multiple optical carrier radio frequency signals to obtain multiple radio frequency electrical signals, sends the multiple radio frequency electrical signals to the microwave radio frequency ports of the comprehensive skyward microwave antenna, the comprehensive groundward microwave antenna, and the laser / W-band microwave co-aperture inter-satellite and earth terminal, performs wavelength division multiplexing on the multiple optical modulation signals to obtain a combined optical modulation signal, performs wavelength division demultiplexing on the combined optical modulation signal to obtain multiple optical modulation signals, and sends the multiple optical modulation signals to the optical ports of the laser / W-band microwave co-aperture inter-satellite and earth terminal. ​ The first plurality of radio frequency electrical signals, the second plurality of radio frequency electrical signals, the wired optical modulation signal and the wired radio frequency electrical signal are received, the first plurality of radio frequency electrical signals, the second plurality of radio frequency electrical signals and the wired radio frequency electrical signal are electro-optically modulated to generate a second plurality of optical carrier radio frequency signals, the second plurality of optical carrier radio frequency signals and the wired optical modulation signal are wavelength division multiplexed to obtain a second combined optical signal, the second combined optical signal is wavelength division demultiplexed to obtain a second plurality of optical modulation signals and the second plurality of optical carrier radio frequency signals, the second plurality of optical modulation signals are transmitted to optical ports of a high-speed waveform processing unit, the second plurality of optical carrier radio frequency signals are microwave photonically down-converted to obtain a second plurality of intermediate frequency electrical signals, and the second plurality of intermediate frequency electrical signals are transmitted to intermediate frequency ports of a low-speed AD / DA conversion unit; The low-speed AD / DA conversion unit receives the modulated and encoded low-speed service data from the satellite-borne routing unit, converts the modulated and encoded low-speed service data through DA conversion to obtain a plurality of intermediate frequency electrical signals, and transmits the plurality of intermediate frequency electrical signals to the microwave photonically frequency conversion and switching unit; receives the second plurality of intermediate frequency electrical signals from the microwave photonically frequency conversion and switching unit, AD samples the second plurality of intermediate frequency electrical signals to obtain low-speed service data, and transmits the low-speed service data to the satellite-borne routing unit; The high-speed waveform processing unit receives high-speed original service data from the satellite-borne routing unit, performs high-speed laser modulation and encoding processing on the high-speed original service data to obtain a plurality of optical modulation signals, and transmits the plurality of optical modulation signals to the microwave photonically frequency conversion and switching unit; receives the second plurality of optical modulation signals from the microwave photonically frequency conversion and switching unit, performs demodulation and decoding processing on the second plurality of optical modulation signals to obtain second high-speed original service data, and transmits the second high-speed original service data to the satellite-borne routing unit; The high-performance computing unit receives the low-speed service data transmitted by the low-speed AD / DA conversion unit from the satellite-borne routing unit, performs demodulation and decoding processing on the low-speed service data to obtain modulated and encoded low-speed service data, and transmits the modulated and encoded low-speed service data back to the satellite-borne routing unit; receives the second high-speed original service data transmitted by the high-speed waveform processing unit from the satellite-borne routing unit, performs demodulation and decoding processing to obtain high-speed original service data, and transmits the high-speed original service data back to the satellite-borne routing unit; The satellite-borne routing unit receives the low-speed service data transmitted by the low-speed AD / DA conversion unit, and transmits the low-speed service data to the high-performance computing unit; receives the modulated and encoded low-speed service data transmitted by the high-performance computing unit, and transmits the modulated and encoded low-speed service data to the low-speed AD / DA conversion unit; The satellite-borne routing unit receives the second high-speed original service data transmitted by the high-speed waveform processing unit, and transmits the second high-speed original service data to the high-performance computing unit; receives the high-speed original service data transmitted by the high-performance computing unit, and transmits the high-speed original service data to the high-speed waveform processing unit.

2. The software-defined multi-standard satellite communication payload system of claim 1, wherein: The satellite-borne routing unit comprises a routing protocol processing module and an Ethernet switching module; wherein, The routing protocol processing module receives routing protocol packets, modulated and encoded low-speed service data and high-speed original service data from the Ethernet switching module, performs routing information analysis and routing calculation on the routing protocol packets to obtain routing calculation results, re-frames the modulated and encoded low-speed service data and the high-speed original service data according to the routing calculation results, and sends them to the Ethernet switching module; The Ethernet switching module receives the modulated and encoded low-speed service data and the high-speed original service data sent by the high-performance computing unit, sends the preset routing protocol packets, the modulated and encoded low-speed service data and the high-speed original service data to the routing protocol processing module, receives the re-framed modulated and encoded low-speed service data and the high-speed original service data, sends the modulated and encoded low-speed service data to the low-speed AD / DA conversion unit, and sends the high-speed original service data to the high-performance computing unit; receives the low-speed service data sent by the low-speed AD / DA conversion unit and the second high-speed original service data sent by the high-speed waveform processing unit, and transmits the low-speed service data and the second high-speed original service data to the high-performance computing unit.

3. The software-defined multi-standard satellite communication payload system according to claim 1 or 2, characterized in that: The satellite-borne routing unit includes a first satellite-borne routing unit and a second satellite-borne routing unit.

4. The software-defined multi-standard satellite communication payload system of claim 1, wherein: The microwave photon frequency conversion switching unit includes a plurality of microwave electro-optical mixers, an optical switch matrix, a first plurality of microwave photoelectric frequency dividers, a second plurality of microwave photoelectric frequency dividers, and a third plurality of microwave photoelectric frequency dividers; wherein, The plurality of microwave electro-optical mixers receive a plurality of intermediate frequency electrical signals from the low-speed AD / DA conversion unit and a plurality of optical modulation signals from the high-speed waveform processing unit, perform microwave photon electro-optical modulation on the plurality of intermediate frequency electrical signals to generate a plurality of optical carrier radio frequency signals, perform wavelength division multiplexing on the plurality of optical carrier radio frequency signals to obtain a combined optical signal, and transmit the combined optical signal and the plurality of optical modulation signals to the optical switch matrix; and perform wavelength division multiplexing on the plurality of optical modulation signals to obtain a combined optical modulation signal, and transmit the combined optical modulation signal to the optical switch matrix; The optical switch matrix receives the combined optical signal, performs channel mapping switching to obtain a mapping switched optical signal, and transmits the mapping switched optical signal to the first plurality of microwave photoelectric frequency dividers, the second plurality of microwave photoelectric frequency dividers, and the third plurality of microwave photoelectric frequency dividers; and receives the combined optical modulation signal and transmits it to the third plurality of microwave photoelectric frequency dividers; The first plurality of microwave photoelectric frequency dividers receive the mapping switched optical signal, perform wavelength division demultiplexing on the mapping switched optical signal to obtain a plurality of optical carrier radio frequency signals, perform microwave photon down-conversion on the plurality of optical carrier radio frequency signals to obtain a plurality of radio frequency electrical signals, and transmit the plurality of radio frequency electrical signals to the microwave radio frequency ports of the integrated satellite antenna; The second plurality of microwave photoelectric frequency dividers receive the mapping switched optical signal, perform wavelength division demultiplexing on the mapping switched optical signal to obtain a plurality of optical carrier radio frequency signals, perform microwave photon down-conversion on the plurality of optical carrier radio frequency signals to obtain a plurality of radio frequency electrical signals, and transmit the plurality of radio frequency electrical signals to the microwave radio frequency ports of the integrated ground antenna; The third multi-path microwave photoelectric frequency divider receives the mapped switched optical signal, performs wavelength division demultiplexing on the mapped switched optical signal to obtain a plurality of optical carrier radio frequency signals, performs microwave photon down-conversion processing on the plurality of optical carrier radio frequency signals to obtain a plurality of radio frequency electrical signals, and transmits the plurality of radio frequency electrical signals to the microwave radio frequency port of the laser / W-band microwave co-aperture inter-satellite and satellite-ground terminal.

5. The software-defined multi-standard satellite communication payload system of claim 4, wherein: The first multi-path microwave photoelectric frequency divider receives a plurality of first radio frequency electrical signals from the integrated anti-sky microwave antenna, performs electro-optical modulation on the plurality of first radio frequency electrical signals to generate a plurality of second optical carrier radio frequency signals, performs wavelength division multiplexing processing on the plurality of second optical carrier radio frequency signals to obtain a second combined optical signal, and transmits the second combined optical signal to the optical switch matrix. The second multi-path microwave photoelectric frequency divider receives a plurality of second radio frequency electrical signals from the integrated anti-ground microwave antenna, performs electro-optical modulation on the plurality of second radio frequency electrical signals to generate a plurality of second optical carrier radio frequency signals, performs wavelength division multiplexing processing on the plurality of second optical carrier radio frequency signals to obtain a second combined optical signal, and transmits the second combined optical signal to the optical switch matrix. The third multi-path microwave photoelectric frequency divider receives a wired optical modulation signal and a wired radio frequency electrical signal, performs electro-optical modulation on the wired radio frequency electrical signal to generate a plurality of second optical carrier radio frequency signals, performs wavelength division multiplexing combined processing on the plurality of second optical carrier radio frequency signals and the wired optical modulation signal to obtain a second combined optical signal, and transmits the second combined optical signal to the optical switch matrix. The optical switch matrix receives the second combined optical signal, performs channel mapping switching on the second combined optical signal to obtain a mapped switched second optical signal, and transmits the mapped switched second optical signal to the multi-path microwave electro-optical frequency mixer. The multi-path microwave electro-optical frequency mixer receives the mapped switched second optical signal, performs wavelength division demultiplexing on the mapped switched second optical signal to obtain a plurality of second optical modulation signals and a plurality of second optical carrier radio frequency signals, transmits the plurality of second optical modulation signals to the optical port of the high-speed waveform processing unit, performs microwave photon down-conversion processing on the plurality of second optical carrier radio frequency signals to obtain a plurality of second intermediate frequency electrical signals, and transmits the plurality of second intermediate frequency electrical signals to the intermediate frequency port of the low-speed AD / DA conversion unit.

6. The software-defined multi-standard satellite communication payload system of claim 4 or 5, wherein: The multi-path microwave electro-optical frequency mixer is connected to the optical switch matrix through an optical fiber, and the optical switch matrix is connected to the first multi-path microwave photoelectric frequency divider, the second multi-path microwave photoelectric frequency divider, and the third multi-path microwave photoelectric frequency divider through optical fibers.

7. The software-defined multi-standard satellite communication payload system of claim 1, wherein Further comprising: a master control unit connected to the on-board routing unit.

8. The software-defined multi-standard satellite communication payload system of claim 1, wherein Further comprising: an on-board storage unit connected to the on-board routing unit.

9. The software-defined multi-standard satellite communication payload system of claim 7, wherein: The master control unit is used to implement system working mode data flow control, computing resource management, waveform processing task scheduling, and a standard Ethernet remote control and telemetry interface with a satellite computer.

10. A method for managing resources of a multi-standard satellite communication payload based on a software defined radio, characterized in that The master control unit receives and analyzes working mode instructions from the satellite computer to obtain waveform processing tasks to be deployed. The master control unit receives and analyzes working mode instructions from the satellite computer to obtain waveform processing tasks to be deployed. The main control unit compares the waveform processing task to be deployed with the currently running waveform processing task, divides the same task in the currently running waveform processing task as the task to be reserved, divides other tasks as the task to be stopped, and divides the new task of the waveform processing task to be deployed; The main control unit compares the computing resource demand of the task to be stopped with the computing resource demand of the new task; When the computing resource demand of the task to be stopped is the same as the computing resource demand of the new task, the main control unit closes the container image of the task to be stopped and replaces the container image of the new task; When the computing resource demand of the task to be stopped is greater than the computing resource demand of the new task, the main control unit closes the container image of the task to be stopped, deploys the container image of the new task, and releases the idle computing resource according to the minimum computing resource strategy; When the computing resource demand of the task to be stopped is less than the computing resource demand of the new task, the main control unit closes the container image of the task to be stopped, deploys the container image of the new task, and adds the computing resource according to the minimum computing resource strategy.

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