Satellite rotating cabin radio frequency signal transmission system and method based on photoelectric slip ring

Abstract

The invention relates to a satellite rotating cabin radio frequency signal transmission system and method based on a photoelectric slip ring, and the system comprises a baseline conversion module which is located in a satellite rotating cabin and is used for converting a radio frequency signal into an optical signal or converting the optical signal into the radio frequency signal; the photoelectric slip ring is located in the rotary table, the photoelectric slip ring comprises a smooth slip ring and an electric slip ring, the photoelectric slip ring is driven by the rotary table to rotate, and the photoelectric slip ring is used for non-contact transmission of optical signals or radio frequency signals; and the platform conversion module is located in the satellite platform cabin, and the platform conversion module is used for converting the radio frequency signal into an optical signal or converting the optical signal into the radio frequency signal. According to the satellite rotating cabin radio frequency signal transmission system based on the photoelectric slip ring provided by the invention, the photoelectric slip ring is used for realizing single-channel or multi-channel transmission of multiple radio frequency signals, and light weight and miniaturization of complex signal transmission of a satellite-borne system are facilitated.

Description

Technical Field

[0001] The present invention relates to the field of spacecraft communication technology, and in particular to a satellite rotating cabin radio frequency signal transmission system and method based on an optoelectronic slip ring. Background Art

[0002] At present, products such as smooth rings and RF rotating joints are usually used for RF signal transmission under satellite rotation. Satellite RF channels are mainly used for measurement and control, data transmission, navigation and positioning, and payload, and have high reliability requirements. After the RF signal passes through the rotating module, there is insertion loss in the channel conversion, especially for multi-channel RF signal transmission. When the number of RF channels increases, the volume and weight of the RF rotating joint increase with the number of channels, and the channel insertion loss and isolation of each channel deteriorate. Each channel wears out with rotation, resulting in poor life, technical indicators, and reliability. There are certain technical difficulties in RF signal transmission under satellite rotation conditions.

[0003] Common satellite-borne RF signals range from L-band (frequency 1-2 GHz) to Ka-band (frequency 26.5-40 GHz), and have been gradually expanded to Q / V-band (frequency 40 / 50 GHz) and W-band (frequency 70 / 80 GHz) in recent years. Satellite-borne RF signals are developing in the direction of wider frequency bands, higher frequency bands, and more channels.

[0004] RF rotary joints mainly include products such as waveguide rotary joints and coaxial rotary joints. The non-contact type is mainly based on waveguide rotary joints, which have the advantages of long life and simple structure, and the disadvantages of large size and narrow transmission band. Coaxial rotary joints use contact transmission, and the service life is related to the rotation speed and wear of the rotating parts. Existing RF rotary joints are generally composed of multiple stacked single rotary joints, which have problems such as large size and many restrictions on use on satellites. Some use shared rotating conductors, which have the problem of poor isolation between channels. Therefore, there are many limitations in the use of existing RF rotary joints on satellites. Summary of the invention

[0005] In view of some or all of the problems in the prior art, the present invention provides a satellite rotating cabin radio frequency signal transmission system based on an optoelectronic slip ring, the system comprising:

[0006] A baseline conversion module, which is located in the satellite rotating cabin, and is used to convert a radio frequency signal into an optical signal or convert an optical signal into a radio frequency signal;

[0007] An optoelectronic slip ring, which is located in the turntable, the optoelectronic slip ring comprises a smooth ring and an electric slip ring, the optoelectronic slip ring is driven to rotate by the turntable, and the optoelectronic slip ring is used for contactless transmission of optical signals or radio frequency signals; and

[0008] The platform conversion module is located in the satellite platform cabin, and is used to convert radio frequency signals into optical signals or convert optical signals into radio frequency signals.

[0009] Further, the smooth ring is connected in series with the electric slip ring; the smooth ring includes a smooth ring stator and a smooth ring rotor; the electric slip ring includes an electric slip ring stator and an electric slip ring rotor;

[0010] The smooth ring rotor is connected to the electric slip ring rotor through a fork mechanism, the turntable stator is connected to the smooth ring stator and the electric slip ring stator, the electric slip ring is driven to rotate by the primary fork mechanism, and the smooth ring is driven to rotate by the secondary fork mechanism; and

[0011] The smooth ring rotor is connected to the baseline conversion module, and the smooth ring stator is connected to the platform conversion module.

[0012] Further, the baseline conversion module includes a radio frequency to light transmission module and an optical to radio frequency receiving module; and / or

[0013] The platform conversion module includes a radio frequency to optical transmission module and an optical radio frequency to receiving module.

[0014] Furthermore, the radio frequency to light transmission module includes a pre-low noise amplifier, an electro-optical converter and an automatic power / temperature controller;

[0015] The pre-noise amplifier is used to perform impedance matching and low-noise amplification on the radio frequency signal, and send the amplified radio frequency signal to the electro-optical converter;

[0016] The electro-optical converter is used to convert the amplified radio frequency signal into an optical signal; and

[0017] The automatic power / temperature controller automatically adjusts the power output and temperature of the radio frequency to light transmission module according to the set parameters.

[0018] Furthermore, the optical-to-RF receiving module includes an optical path adaptor, an optoelectronic converter, an optical power detection and bias controller, and a post-amplifier;

[0019] The optical path adaptor is used to automatically adjust the optical element to achieve the optimal optical path state according to the changes in the external environment or optical signal parameters;

[0020] The photoelectric converter is used to convert the optical signal into a radio frequency signal;

[0021] The optical power detection and bias controller is used to detect the power of the optical signal and control the bias state of the optical signal; and

[0022] The post-amplifier is used to amplify the radio frequency signal and output the amplified radio frequency signal.

[0023] Furthermore, the baseline conversion module and the platform conversion module also include a wavelength division multiplexer;

[0024] The wavelength division multiplexer is used to couple multiple optical signals into the same optical fiber and input the coupled optical signals into the optoelectronic slip ring; the wavelength division multiplexer is also used to recover multiple optical signals from the coupled optical signals output by the optoelectronic slip ring and input the recovered multiple optical signals into the optoelectronic converter.

[0025] The present invention also provides a method for transmitting radio frequency signals in a satellite rotating cabin based on an optoelectronic slip ring, the method comprising the following steps:

[0026] The radio frequency to optical transmission module converts the input multi-channel radio frequency signals into multi-channel optical signals, and inputs the multi-channel optical signals into the optical transmission wavelength division multiplexer;

[0027] The optical transmission wavelength division multiplexer couples the input optical signal into the same optical fiber, and inputs the coupled optical signal into the optoelectronic slip ring;

[0028] The optoelectronic slip ring transmits the optical signal to the optical receiving wavelength division multiplexer;

[0029] The optical receiving wavelength division multiplexer restores the coupled optical signal output by the optoelectronic slip ring into a multi-channel optical signal, and inputs the restored multi-channel optical signal into the optical-to-RF receiving module; and

[0030] The optical-to-RF receiving module converts the recovered multi-path optical signals into multi-path recovered RF signals, and outputs the multi-path recovered RF signals.

[0031] Furthermore, the input multi-channel radio frequency signal includes one or more of a measurement and control radio frequency signal, a data transmission radio frequency signal, a random radio frequency signal, or a payload radio frequency signal.

[0032] Furthermore, the transmission method uses a single-channel optoelectronic slip ring to convert the input multi-channel radio frequency signals into multi-channel optical signals for transmission; or

[0033] The transmission method distributes input radio frequency signals with the same function on different optoelectronic slip ring channels, and uses multi-channel optoelectronic slip rings to convert them into transmission of multi-path optical signals.

[0034] Furthermore, the input multi-channel radio frequency signal is output by a random antenna or an S antenna or a measurement and control antenna or a digital transmission phased array; or

[0035] The multi-path recovered radio frequency signals are output to an integrated electronic or microwave network.

[0036] The technical solution provided by the present invention has the following beneficial effects:

[0037] 1. The satellite rotating cabin radio frequency signal transmission system based on optoelectronic slip ring provided by the present invention realizes the optoelectronic conversion and channel multiplexing of L-Ka wide-band and multi-channel radio frequency signals on the satellite through single-channel or multi-channel optoelectronic slip rings, thereby realizing the transmission requirements of radio frequency signals. The satellite rotating cabin radio frequency signal transmission system based on optoelectronic slip ring provided by the present invention has been successfully applied to the on-orbit radio frequency signal conversion between a certain satellite rotating cabin and a platform cabin, covering the two-way transmission of video signals in the SX frequency band.

[0038] 2. The satellite rotating cabin radio frequency signal transmission system based on optoelectronic slip ring provided by the present invention uses optoelectronic slip ring to realize single-channel or multi-channel transmission of multiple radio frequency signals, which is beneficial to the lightweight and miniaturization of complex signal transmission of satellite-borne systems.

[0039] 3. The satellite rotating cabin radio frequency signal transmission system based on optoelectronic slip ring provided by the present invention can couple optical signals to one optical fiber or multiple optical fibers through one or more wavelength division multiplexers. For important signals, they can be transmitted through multi-channel hot backup, and electrical signal conversion and optical channel transmission redundancy can be realized, which can meet the high reliability and high stability transmission requirements of aerospace. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] To further illustrate the above and other advantages and features of various embodiments of the present invention, a more specific description of various embodiments of the present invention will be presented with reference to the accompanying drawings. It will be understood that these drawings only depict typical embodiments of the present invention and are therefore not to be considered as limiting the scope thereof. In the accompanying drawings, for clarity, identical or corresponding parts will be represented by identical or similar reference numerals.

[0041] Figure 1 A schematic diagram of the satellite rotating cabin sub-cabin design according to an embodiment of the present invention is shown;

[0042] Figure 2 A schematic diagram of a satellite rotating cabin radio frequency signal transmission system based on an optoelectronic slip ring according to an embodiment of the present invention is shown;

[0043] Figure 3 A schematic diagram of the structure of an optoelectronic slip ring according to an embodiment of the present invention is shown;

[0044] Figure 4 A schematic diagram showing the transmission principle of converting a radio frequency signal into an optical signal according to an embodiment of the present invention is shown;

[0045] Figure 5 A schematic flow chart showing a method for transmitting radio frequency signals in a satellite rotating cabin based on an optoelectronic slip ring according to an embodiment of the present invention is shown;

[0046] Figure 6 A schematic diagram showing a single-channel radio frequency signal transmission method for a satellite rotating cabin based on an optoelectronic slip ring according to an embodiment of the present invention; and

[0047] Figure 7 A schematic diagram of a multi-channel radio frequency signal transmission method for a satellite rotating cabin based on an optoelectronic slip ring according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0048] In the following description, the present invention is described with reference to various embodiments. However, those skilled in the art will recognize that various embodiments may be implemented without one or more specific details or with other replacement and / or additional methods or components. In other cases, well-known structures or operations are not shown or described in detail to avoid obscuring the inventive point of the present invention. Similarly, for the purpose of explanation, specific numbers and configurations are set forth to provide a comprehensive understanding of embodiments of the present invention. However, the present invention is not limited to these specific details.

[0049] In this specification, reference to "one embodiment" or "the embodiment" means that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present invention. The phrase "in one embodiment" appearing in various places in this specification does not necessarily all refer to the same embodiment.

[0050] It should be noted that the embodiments of the present invention describe the method steps in a specific order, but this is only for the purpose of illustrating the specific embodiment, rather than limiting the order of the steps. On the contrary, in different embodiments of the present invention, the order of the steps can be adjusted according to actual needs.

[0051] In the present invention, each module of the system according to the present invention can be implemented using software, hardware, firmware or a combination thereof. When the module is implemented using software, the function of the module can be implemented by a computer program flow, for example, the module can be implemented by a code segment (such as a code segment of a language such as C, C++) stored in a storage device (such as a hard disk, a memory, etc.), wherein the corresponding function of the module can be implemented when the code segment is executed by a processor. When the module is implemented using hardware, the function of the module can be implemented by setting a corresponding hardware structure, for example, the function of the module can be implemented by hardware programming a programmable device such as a field programmable gate array (FPGA), or the function of the module can be implemented by designing an application-specific integrated circuit (ASIC) including electronic devices such as a plurality of transistors, resistors and capacitors. When the module is implemented using firmware, the function of the module can be written into a read-only memory such as an EPROM or EEPROM of the device in the form of a program code, and the corresponding function of the module can be implemented when the program code is executed by a processor. In addition, some functions of the module may need to be implemented by separate hardware or by collaboration with the hardware, for example, the detection function is implemented by corresponding sensors (such as proximity sensors, acceleration sensors, gyroscopes, etc.), the signal transmission function is implemented by corresponding communication devices (such as Bluetooth devices, infrared communication devices, baseband communication devices, Wi-Fi communication devices, etc.), the output function is implemented by corresponding output devices (such as displays, speakers, etc.), and so on.

[0052] The application of optoelectronic slip rings in ground-based RF signal conversion and transmission is becoming increasingly mature, and they are widely used in radar, underwater, and missile-borne terminals, but they are not yet mature in satellite-borne applications. The satellite rotating cabin RF signal transmission system based on optoelectronic slip rings provided by the present invention is based on the multi-channel RF signal transmission requirements of the rotating components on the satellite, and through single-channel / multi-channel optoelectronic slip rings, it realizes the optoelectronic conversion and channel multiplexing of the L-Ka wide-band and multi-channel RF signals on the satellite, thereby meeting the transmission requirements of RF signals. The satellite rotating cabin RF signal transmission system based on optoelectronic slip rings provided by the present invention has been successfully applied to the on-orbit RF signal conversion between a certain satellite rotating cabin and a platform cabin, covering the two-way transmission of video signals in the SX frequency band.

[0053] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0054] Figure 1 FIG. 1 is a schematic diagram showing a satellite rotating cabin sub-cabin design according to an embodiment of the present invention. Figure 1 As shown, the satellite rotating cabin 1, namely the satellite payload cabin, rotates at an angular velocity ω, the satellite rotating cabin 1 is connected to the turntable 2, and the satellite platform cabin 3 is fixed.

[0055] Figure 2FIG. 1 is a schematic diagram of a radio frequency signal transmission system for a satellite rotating cabin based on an optoelectronic slip ring according to an embodiment of the present invention. Figure 2 As shown, the radio frequency signal transmission system of the satellite rotating cabin based on the optoelectronic slip ring includes a baseline conversion module 10, an optoelectronic slip ring 20 and a platform conversion module 30. The baseline conversion module 10 is located in the satellite rotating cabin 1, and the baseline conversion module 10 is used to convert the radio frequency signal into an optical signal or convert the optical signal into a radio frequency signal. The optoelectronic slip ring 20 is located in the turntable 2, and the optoelectronic slip ring 20 includes a smooth ring and an electric slip ring. The optoelectronic slip ring 20 is driven to rotate by the turntable 2, and the optoelectronic slip ring 20 is used for non-contact transmission of optical signals or radio frequency signals. The platform conversion module 30 is located in the satellite platform cabin 3, and the platform conversion module 30 is used to convert the radio frequency signal into an optical signal or convert the optical signal into a radio frequency signal. In one embodiment of the present invention, the radio frequency signal includes one or more of a measurement and control radio frequency signal, a digital transmission radio frequency signal, a random radio frequency signal, or a payload radio frequency signal.

[0056] Figure 3The schematic diagram of the structure of the optoelectronic slip ring of an embodiment of the present invention is shown. As shown in the figure, the smooth ring 201 and the electric slip ring 202 are connected in series. The smooth ring 201 includes a smooth ring stator 205 and a smooth ring rotor 204; the electric slip ring 202 includes an electric slip ring stator 207 and an electric slip ring rotor 208. The smooth ring rotor 204 and the electric slip ring rotor 208 realize the transmission of driving torque through a two-stage fork mechanism. The turntable stator 203 is connected with the smooth ring stator 205 and the electric slip ring stator 207. The motor output shaft 210 drives the first-stage fork mechanism 209, and then the first-stage fork mechanism 209 drives the electric slip ring 202 to rotate, and then the second-stage fork mechanism 206 drives the smooth ring 201 to rotate. The rotation angular velocity of the motor output shaft 210 is ω. The installation steps of the smooth ring 201 and the electric slip ring 202 are as follows: first, the electric slip ring rotor 208 and the smooth ring rotor 204 are installed through the fork mechanism, and the coaxiality and verticality of the installation are adjusted to realize the synchronous rotation of the two slip rings; then the turntable stator 203 is installed with the smooth ring stator 205 and the electric slip ring stator 207, and the coaxiality and verticality of the slip ring and the turntable are adjusted, and the turntable motor rotor end is connected to the photoelectric slip ring rotor end, and the turntable fork drives the electric slip ring to rotate, and then the electric slip ring fork realizes the synchronous drive of the smooth ring; the fork mechanism adopts clearance fit, and the requirements for the shaft system installation accuracy are not high. The smooth ring rotor 204 is connected to the baseline conversion module 10, and the smooth ring stator 205 is connected to the platform conversion module 30, so as to realize the interconnection and intercommunication of the external signal channel of the smooth ring 201. The platform conversion module 30 is connected to the satellite platform cabin 3 corresponding to the single-machine power supply interface and remote control telemetry signal connection, and the baseline conversion module 10 is connected to the satellite rotating cabin 1 corresponding to the single-machine power supply interface and remote control telemetry signal connection. The transmission mechanism of the RF signal is: the satellite rotating cabin 1 corresponds to a single machine sending data, and the satellite platform cabin 3 corresponds to a single machine testing the correctness of the received data; or the satellite platform cabin 3 corresponds to a single machine sending data, and the satellite rotating cabin 1 corresponds to a single machine testing the correctness of the received data.

[0057] In one embodiment of the present invention, the baseline conversion module 10 includes a radio frequency to light transmitting module and an optical to radio frequency receiving module; and / or the platform conversion module 30 includes a radio frequency to light transmitting module and an optical to radio frequency receiving module.

[0058] Figure 4 A schematic diagram showing the transmission principle of converting a radio frequency signal into an optical signal according to an embodiment of the present invention is shown. Figure 4 The radio frequency signal is shown to be transmitted from the baseline conversion module 10 to the platform conversion module 30. Figure 4 As shown, the baseline conversion module 10 includes a first optical transmitting wavelength division multiplexer 111 and a radio frequency to light transmitting module 110 , and the platform conversion module 30 includes a first optical receiving wavelength division multiplexer 311 and a radio frequency to light transmitting module 310 .

[0059] The RF-to-optical transmission module 110 includes a pre-low noise amplifier 113, an electro-optical converter 114, and an automatic power / temperature controller 115. The pre-noise amplifier 113 is used to perform impedance matching and low noise amplification on the RF signal, and send the amplified RF signal to the electro-optical converter. The electro-optical converter 114 is used to convert the amplified RF signal into an optical signal. The automatic power / temperature controller 115 automatically adjusts the power output and temperature of the RF-to-optical transmission module according to the set parameters.

[0060] The optical-to-RF receiving module 310 includes an optical path adaptor 313, an optoelectronic converter 314, an optical power detection and bias controller 315, and a post-amplifier 316. The optical path adaptor 313 is used to automatically adjust the optical elements to achieve the optimal optical path state according to the changes in the external environment or optical signal parameters. The optoelectronic converter 314 is used to convert the optical signal into an RF signal. The optical power detection and bias controller 315 is used to detect the power of the optical signal and control the bias state of the optical signal. The post-amplifier 316 is used to amplify the RF signal and output the amplified RF signal.

[0061] The first optical transmitting wavelength division multiplexer 111 is used to couple multiple optical signals into the same optical fiber, and input the coupled optical signals into the optoelectronic slip ring 20; the first optical receiving wavelength division multiplexer 311 is used to recover multiple optical signals from the coupled optical signals output from the optoelectronic slip ring 20, and input the recovered multiple optical signals into the optoelectronic converter.

[0062] Figure 5 A schematic flow chart of a method for transmitting radio frequency signals in a satellite rotating cabin based on an optoelectronic slip ring according to an embodiment of the present invention is shown. Figure 6 A schematic diagram of a single-channel radio frequency signal transmission method for a satellite rotating cabin based on an optoelectronic slip ring according to an embodiment of the present invention is shown. Figure 7 The schematic diagram of a multi-channel radio frequency signal transmission method for a satellite rotating cabin based on an optoelectronic slip ring according to an embodiment of the present invention is shown. Figure 5-Figure 7 The present invention provides a method for transmitting radio frequency signals in a satellite rotating cabin based on an optoelectronic slip ring. The method comprises the following steps:

[0063] First, the RF-to-optical transmission module converts the input multi-channel RF signals into multi-channel optical signals, and inputs the multi-channel optical signals into the optical transmission wavelength division multiplexer. In one embodiment of the present invention, the input multi-channel RF signals include one or more of the measurement and control RF signals, the data transmission RF signals, the random RF signals, or the load RF signals. Figure 6 and Figure 7As shown, the input multi-channel RF signal is output by a random antenna or an S antenna or a measurement and control antenna or a digital transmission phased array. The input multi-channel RF signal enters the RF-to-optical transmission module, and is amplified by the impedance matching and low-noise amplification of the pre-low-noise amplifier to achieve signal amplification of the RF signal. The RF signal is converted into an optical signal after passing through the electro-optical converter and transmitted through the internal optical cable of the RF-to-optical transmission module. After the multi-channel RF signal passes through the wavelength division multiplexer, the multi-channel optical signal is converted into one or more optical signals of different wavelengths. Figure 6 and Figure 7 As shown, the baseline conversion module 10 includes a first electro-optical converter 114 for electro-optical conversion, a first photoelectric converter 116 for photoelectric conversion, and a first optical transmission wavelength division multiplexer 111 and a second optical transmission wavelength division multiplexer 112. In one embodiment of the present invention, the baseline conversion module 10 may include more than two wavelength division multiplexers.

[0064] Next, the optical transmission wavelength division multiplexer couples the input optical signal into the same optical fiber, and inputs the coupled optical signal into the optoelectronic slip ring 20. The optoelectronic slip ring 20 is driven by the turntable 2 to rotate continuously.

[0065] Next, the optoelectronic slip ring transmits the optical signal to the optical receiving wavelength division multiplexer. Figure 6 and Figure 7 As shown, the optical receiving wavelength division multiplexer includes a first optical receiving wavelength division multiplexer 311 and a second optical transmitting wavelength division multiplexer 312. In one embodiment of the present invention, the platform conversion module 30 may include more than two wavelength division multiplexers.

[0066] Next, the optical receiving wavelength division multiplexer restores the coupled optical signal output by the optoelectronic slip ring into a multi-channel optical signal, and inputs the restored multi-channel optical signal into the optical-to-RF receiving module. Figure 6 and Figure 7 As shown, the optical-to-RF receiving module includes a second photoelectric converter 314 for photoelectric conversion and a first electro-optical converter 317 for electro-optical conversion.

[0067] Finally, the optical-to-RF receiving module converts the recovered multi-path optical signals into multi-path recovered RF signals, and outputs the multi-path recovered RF signals. Figure 6 and Figure 7 As shown, the multi-path recovered RF signals are output to an integrated electronic or microwave network.

[0068] In one embodiment of the present invention, the transmission method uses a single-channel optoelectronic slip ring to convert the input multi-channel radio frequency signals into the transmission of multi-channel optical signals; or the transmission method distributes the input radio frequency signals with the same function on different optoelectronic slip ring channels, and uses multi-channel optoelectronic slip rings to convert them into the transmission of multi-channel optical signals, thereby avoiding the loss of function when one optoelectronic slip ring fails, and improving the application reliability. In one embodiment of the present invention, a wavelength division multiplexer may not be used, but one wavelength may be used to correspond to one optical channel.

[0069] The satellite rotating cabin radio frequency signal transmission system based on optoelectronic slip ring provided by the present invention uses optoelectronic slip ring to realize single-channel or multi-channel transmission of multiple radio frequency signals, which is beneficial to the lightweight and miniaturization of complex signal transmission of satellite-borne systems; optical signals can be coupled to one optical fiber or multiple optical fibers through one or more wavelength division multiplexers, and important signals can be transmitted through multi-channel hot backup, which can realize electrical signal conversion and optical channel transmission redundancy, and can meet the high reliability and high stability transmission requirements of aerospace.

[0070] Although various embodiments of the present invention are described above, it should be understood that they are presented as examples only and not as limitations. It is obvious to those skilled in the relevant art that various combinations, modifications and changes can be made thereto without departing from the spirit and scope of the present invention. Therefore, the breadth and scope of the present invention disclosed herein should not be limited by the exemplary embodiments disclosed above, but should only be defined according to the technical solutions of the present invention and their equivalents.

Claims

1. A satellite rotating cabin radio frequency signal transmission system based on optoelectronic slip ring, characterized in that: include: A baseline conversion module, which is located in the satellite rotating cabin, and is used to convert a radio frequency signal into an optical signal or convert an optical signal into a radio frequency signal; An optoelectronic slip ring is located in the turntable. The optoelectronic slip ring includes a smooth ring and an electric slip ring. The optoelectronic slip ring is driven to rotate by the turntable. The optoelectronic slip ring is used for contactless transmission of optical signals or radio frequency signals. as well as The platform conversion module is located in the satellite platform cabin, and is used to convert radio frequency signals into optical signals or convert optical signals into radio frequency signals.

2. The radio frequency signal transmission system for satellite rotating cabin based on optoelectronic slip ring according to claim 1 is characterized in that: The smooth ring is connected in series with the electric slip ring; the smooth ring comprises a smooth ring stator and a smooth ring rotor; the electric slip ring comprises an electric slip ring stator and an electric slip ring rotor; The smooth ring rotor is connected to the electric slip ring rotor through a fork mechanism, the turntable stator is connected to the smooth ring stator and the electric slip ring stator, the electric slip ring is driven to rotate by the primary fork mechanism, and the smooth ring is driven to rotate by the secondary fork mechanism; and The smooth ring rotor is connected to the baseline conversion module, and the smooth ring stator is connected to the platform conversion module.

3. The radio frequency signal transmission system for satellite rotating cabin based on optoelectronic slip ring according to claim 1 is characterized in that: The baseline conversion module includes a radio frequency to light transmission module and an optical to radio frequency receiving module; and / or The platform conversion module includes a radio frequency to optical transmission module and an optical radio frequency to receiving module.

4. The radio frequency signal transmission system for satellite rotating cabin based on optoelectronic slip ring according to claim 3 is characterized in that: The radio frequency to light transmission module includes a pre-low noise amplifier, an electro-optical converter and an automatic power / temperature controller; The pre-noise amplifier is used to perform impedance matching and low-noise amplification on the radio frequency signal, and send the amplified radio frequency signal to the electro-optical converter; The electro-optical converter is used to convert the amplified radio frequency signal into an optical signal; and The automatic power / temperature controller automatically adjusts the power output and temperature of the radio frequency to light transmission module according to the set parameters.

5. The radio frequency signal transmission system for satellite rotating cabin based on optoelectronic slip ring according to claim 3 is characterized in that: The optical-to-RF receiving module includes an optical path adaptor, an optoelectronic converter, an optical power detection and bias controller, and a post-amplifier; The optical path adaptor is used to automatically adjust the optical element to achieve the optimal optical path state according to the changes in the external environment or optical signal parameters; The photoelectric converter is used to convert the optical signal into a radio frequency signal; The optical power detection and bias controller is used to detect the power of the optical signal and control the bias state of the optical signal; as well as The post-amplifier is used to amplify the radio frequency signal and output the amplified radio frequency signal.

6. The radio frequency signal transmission system for satellite rotating cabin based on optoelectronic slip ring according to claim 3 is characterized in that: The baseline conversion module and the platform conversion module also include a wavelength division multiplexer; The wavelength division multiplexer is used to couple multiple optical signals into the same optical fiber and input the coupled optical signals into the optoelectronic slip ring; the wavelength division multiplexer is also used to recover multiple optical signals from the coupled optical signals output by the optoelectronic slip ring and input the recovered multiple optical signals into the optoelectronic converter.

7. A method for using the radio frequency signal transmission system for a satellite rotating cabin based on an optoelectronic slip ring according to any one of claims 1 to 6, characterized in that: The steps include: The radio frequency to optical transmission module converts the input multi-channel radio frequency signals into multi-channel optical signals, and inputs the multi-channel optical signals into the optical transmission wavelength division multiplexer; The optical transmission wavelength division multiplexer couples the input optical signal into the same optical fiber, and inputs the coupled optical signal into the optoelectronic slip ring; The optoelectronic slip ring transmits the optical signal to the optical receiving wavelength division multiplexer; The optical receiving wavelength division multiplexer restores the coupled optical signal output by the optoelectronic slip ring into a multi-channel optical signal, and inputs the restored multi-channel optical signal into the optical-to-RF receiving module; as well as The optical-to-RF receiving module converts the recovered multi-path optical signals into multi-path recovered RF signals, and outputs the multi-path recovered RF signals.

8. The method for transmitting radio frequency signals in a satellite rotating cabin based on an optoelectronic slip ring according to claim 7, characterized in that: The input multi-path radio frequency signal includes one or more of a measurement and control radio frequency signal, a data transmission radio frequency signal, a random radio frequency signal, or a payload radio frequency signal.

9. The method for transmitting radio frequency signals in a satellite rotating cabin based on an optoelectronic slip ring according to claim 7, characterized in that: The transmission method uses a single-channel optoelectronic slip ring to convert input multi-channel radio frequency signals into multi-channel optical signals for transmission; or The transmission method distributes input radio frequency signals with the same function on different optoelectronic slip ring channels, and uses multi-channel optoelectronic slip rings to convert them into transmission of multi-path optical signals.

10. The method for transmitting radio frequency signals in a satellite rotating cabin based on an optoelectronic slip ring according to claim 7, characterized in that: The input multi-path radio frequency signal is output by a random antenna, an S antenna, a measurement and control antenna, or a digital transmission phased array; or The multi-path recovered radio frequency signals are output to an integrated electronic or microwave network.

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