Inter-satellite link ground test system and method for geostationary satellite

Abstract

The application provides an intersatellite link ground test system and method suitable for stationary orbit satellites, comprising: an intersatellite data simulation source device, a ground link data management device, a modulation and demodulation device and an intersatellite data comparison and verification device; the intersatellite data simulation source device is connected with the ground link data management device and the intersatellite data comparison and verification device; the intersatellite data comparison and verification device is connected with the ground link data management device, the ground link data management device is connected with the modulation and demodulation device, and the modulation and demodulation device is connected with a satellite for data transmission; and the intersatellite data simulation source device comprises a multi-satellite load data simulation generation module and a satellite constellation instruction generation module. The application can meet the test requirements of multiple satellites, multiple channels and multiple types of intersatellite links, and improves the coverage of intersatellite link tests.

Description

Technical Field

[0001] This invention relates to the field of aerospace technology, and more specifically, to a ground testing system and method for inter-satellite links suitable for geostationary orbit satellites. Background Technology

[0002] In recent years, with the industrialization and upgrading of the satellite industry, satellite constellation has become a trend, and the inter-satellite link subsystem is a crucial component for realizing inter-constellation communication. The inter-satellite link system mainly includes a radio frequency (RF) unit and a link control unit. Early models primarily used inter-satellite links for inter-satellite position measurement, so ground testing mainly focused on RF performance. However, the inter-satellite link system for high-orbit geostationary satellites is characterized by high data throughput and multiple channels. Therefore, testing cannot solely focus on RF performance; it must also emphasize verifying the payload and telemetry, tracking, and command (TT&C) data streams. Furthermore, due to constraints such as single-unit production, it is impossible for all satellites in the constellation to be tested simultaneously in the facility. To verify the effectiveness of inter-satellite data transmission, it is necessary to simulate satellites that are not physically present as realistically as possible. This places higher demands on satellite testing. To address this need, there is an urgent requirement to develop a complete ground testing system for geostationary satellite inter-satellite links that covers inter-satellite data simulation, inter-satellite RF performance testing, and inter-satellite information flow verification.

[0003] Patent document CN105549382B discloses an automated testing device and method for satellite constellations. The device mainly includes: a test control module for generating test control commands; a data transmission module for reading test service data from a basic database according to the test control commands and sending it to the satellite under test, which controls the actions of other satellites in the constellation based on the test service data; the test service data includes remote control commands, telemetry parameters, command criteria, and test sequences for all satellites in the constellation; a data acquisition module for acquiring and storing data transmitted by all satellites in the constellation; and a data interpretation module for interpreting the data transmitted by all satellites and obtaining the test results of the test control commands based on pre-given inter-satellite criteria. However, this patent document lacks the function of generating command sequences for the satellite test backend and also lacks the function of generating payload data.

[0004] Patent document CN106569054A discloses a multi-satellite asynchronous intelligent testing system, comprising: a front-end device, a control center, a data storage disk control array, and a monitoring terminal. The front-end device is used to forward test commands to satellites and to collect, store, and forward downlink data generated during satellite testing. It includes multiple channels for simultaneous data transmission with multiple satellites. The control center is used to edit and manage test commands, test cases, and test details for multiple satellites, send test commands to the front-end device, and receive and forward downlink data sent by the front-end device. The data storage disk array is used to collect and store downlink data sent by the control center. The monitoring terminal is used to query and analyze the downlink data stored in the data storage disk array. The control center, data storage disk array, and monitoring terminal are all connected to Ethernet. However, this patent document does not support the ability to generate command sequences for a single satellite within a constellation, thus failing to meet the requirements for inter-constellation command generation.

[0005] Patent document CN202632091U discloses a Samsung constellation distributed parallel testing system. Addressing the characteristics of different testing phases for Samsung, it integrates the original three sets of ground electrical support equipment required for Samsung testing into a unified, multi-link, multi-channel integrated testing system. This system adopts a "master-slave network architecture," maintaining the centralized control function of the master node while dynamically managing and allocating slave nodes. Slave nodes can join or leave the integrated testing system based on satellite status and testing phase, thus forming four testing modes: Samsung synchronous parallel testing, constellation joint testing, Samsung asynchronous remote testing, and Samsung distributed parallel thermal testing. However, this patent document only implements parallel testing of Samsung, which has limitations.

[0006] Patent document CN107196695A discloses a Zynq-based inter-satellite link testing system to address the technical problems of complex structure and low testing efficiency in existing technologies. The system includes a host computer and a system hardware platform connected via Ethernet. The host computer comprises a data generation module, a function configuration module, and a link analysis module. The system hardware platform includes a network module, a Zynq chip, a memory module, an intermediate frequency modulation module, a baseband acquisition module, and a power supply module. The Zynq chip includes an on-chip processing system and a functional logic module. The host computer controls the system hardware platform to output the carrier frequency, output power, and code rate of the intermediate frequency signal, and generates the baseband data required for the link under test. This data is downloaded to the system hardware platform via the network, QPSK modulated, and sent to the link under test. Simultaneously, the system hardware platform receives feedback data from multiple links under test, performs real-time error analysis, and stores the data to complete the link test. However, the patent document has the drawback of not being able to generate realistic simulated payload data.

[0007] Patent document CN113452437A discloses an inter-satellite laser link test simulation system for space optical communication, including a reflective collimator, a galvanometer, a beam splitter, an optical fiber coupler, a beam analyzer, a wavelength division multiplexer, an optical circulator, an avalanche photodetector, an FPGA control unit, a laser, a power supply unit, and a two-dimensional turntable. However, this patent document still has the deficiency of not covering inter-satellite data simulation, inter-satellite RF performance testing, and inter-satellite information flow verification. Summary of the Invention

[0008] To address the shortcomings of existing technologies, the purpose of this invention is to provide a ground testing system and method for inter-satellite links suitable for geostationary orbit satellites.

[0009] According to the present invention, an inter-satellite link ground test system suitable for geostationary orbit satellites includes: an inter-satellite data simulation source device, a ground link data management device, a modulation and demodulation device, and an inter-satellite data comparison and verification device;

[0010] The inter-satellite data simulation source device is connected to the ground link data management device and the inter-satellite data comparison and verification device;

[0011] The inter-satellite data comparison and verification device is connected to the ground link data management device, and the ground link data management device is connected to the modulation and demodulation device. The modulation and demodulation device transmits data with the satellite.

[0012] The inter-satellite data simulation source device includes a multi-satellite payload data simulation generation module and a satellite constellation command generation module; the multi-satellite payload data simulation generation module and the satellite constellation command generation module are parallel modules, the satellite payload data simulation generation module is used to generate payload data, and the satellite constellation command generation module is used to generate command data.

[0013] Preferably, the ground link management device includes an instruction and data processing module, a scene editing module, and a data receiving and distribution module;

[0014] The scene editing module is a framework module, used to specify the links through which instructions are transmitted and the satellites to which they are sent;

[0015] The data receiving and distribution module is used to receive and send data from different devices and using different communication protocols.

[0016] The instruction and data processing module performs secondary processing on the instructions according to the requirements of the scene editing module.

[0017] Preferably, the modulation and demodulation device includes an RF frequency shifting module, an RF signal conditioning module, and a multi-channel modulation and demodulation module;

[0018] The multi-channel modulation and demodulation module sends the modulated signal to the radio frequency shifting module, the frequency shifting module sends the signal to the radio frequency signal conditioning module, and the radio frequency signal conditioning module processes the signal and sends it to the satellite.

[0019] Preferably, the inter-satellite data comparison and verification device includes a payload data comparison module and a telemetry data presentation module; the payload data comparison module and the telemetry data presentation module are parallel modules.

[0020] Preferably, the multi-satellite payload data simulation generation module uses a fully digital payload data generation model;

[0021] The multi-satellite payload data simulation and generation module generates various data categories, including random numbers, fixed numbers, and data generated after simulating payload observation of targets.

[0022] The multi-satellite payload data simulation generation module performs real-time simulation and generation based on the data fed back from the satellites, and sends the simulated data to the satellites to form a closed-loop simulation of the payload data.

[0023] Preferably, the instruction and data processing module configures corresponding rules according to satellite framing, special CCSDS, and encoding requirements, and processes data of different data types, different satellites, and different combinations according to the corresponding rules.

[0024] Preferably, the scene editing module adopts scene customization, edits the scene before testing, and calls the edited scene according to the actual working conditions of the satellite.

[0025] Preferably, the payload data comparison module receives data sent by the inter-satellite data simulation source device in real time and performs real-time comparison of static payload simulation data and dynamic payload simulation data.

[0026] Preferably, the inter-satellite data simulation source device, the ground link data management device, the modulation and demodulation device, and the inter-satellite data comparison and verification device all use a unified communication protocol.

[0027] This invention also provides an inter-satellite link testing method suitable for geostationary orbit satellites, based on the aforementioned ground testing system for inter-satellite links suitable for geostationary orbit satellites, specifically including the following steps:

[0028] Step 1: Based on the definitions of satellite remote control frames, telemetry frames, and CCSDS data transmission frames, edit the rules of the relevant modules of inter-satellite data simulation source equipment, modulation and demodulation equipment, ground link management equipment, and inter-satellite data comparison and verification equipment;

[0029] Step 2: Using the inter-satellite data simulation source equipment, simulate and generate characteristic payloads and command data of satellites in the constellation other than the satellite under test, and send them to the ground link management equipment through the network port;

[0030] Step 3: The ground link management equipment processes the data received from the inter-satellite data simulation source according to the scenario template and distributes it to the corresponding modulation and demodulation channels;

[0031] Step 4: The modulation and demodulation equipment modulates and encodes the digital signal according to the requirements, then moves the signal to the frequency required by the satellite and conditions the signal strength;

[0032] Step 5: After receiving the signal, the satellite processes it according to the algorithm, and then the radio frequency channel transmits the information to the modulation and demodulation equipment.

[0033] Step 6: The modem receives the signal from the satellite, conditions it, and then moves the radio frequency signal to the intermediate frequency signal that the multi-channel modem module of the modem can receive. Then it is decoded and demodulated, and sent to the inter-satellite data comparison and verification equipment and the inter-satellite data simulation source equipment via the network according to the communication protocol.

[0034] Step 7: The inter-satellite data comparison and verification equipment compares the data from the inter-satellite data simulation source with the data sent by the ground link management equipment. If an error occurs, an alarm will be issued and the location will be determined. The inter-satellite data comparison and verification equipment uses the telemetry data presentation module to judge the changes in on-board telemetry and evaluate the current status of the satellite.

[0035] Step 8: The inter-satellite data simulation source device receives on-satellite data feedback through the ground link management device, performs real-time simulation, and feeds back the simulated data to the satellite to achieve closed-loop control.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. The testing system of the present invention has strong versatility. The interfaces between the devices in the system are unified and all use the network for communication. There is no need to design RS422, 1553B or other interface driver circuits, which can achieve plug and play.

[0038] 2. The testing system of the present invention has strong scalability. All devices in the system use the same communication protocol and can adapt itself according to the number of satellite and channel tests required, without modifying the code.

[0039] 3. The testing system of the present invention is highly operable. The present invention can be further developed, has a user-friendly human-machine interface, is easy to operate, and can be developed into an automatic program control process to realize automated satellite testing.

[0040] 4. The test system of the present invention has high coverage. The present invention includes payload data simulation, inter-satellite radio frequency index testing, and inter-satellite information flow verification, providing a complete inter-satellite link test solution, which greatly improves the test coverage of the inter-satellite link subsystem.

[0041] 5. This invention designs an inter-satellite link testing system adapted to geostationary orbit satellites, which can meet the testing requirements of multiple satellites, multiple channels, and multiple types of inter-satellite links, and improve the testing coverage of inter-satellite links; the framework of each module of this invention has strong scalability and the interfaces between modules are matched, which has good adaptability and versatility.

[0042] 6. This invention not only has the function of generating command sequences for satellite testing backend, but also has the function of generating payload data; this invention not only supports the ability to generate command sequences for a single satellite in a constellation, but also meets the command generation requirements between constellations.

[0043] 7. This invention not only has telemetry presentation capabilities, but also has load data comparison and verification functions;

[0044] 8. This invention is scalable and is not limited to parallel testing of three satellites;

[0045] 9. The present invention has a data generation module that generates real simulation data of the payload and performs closed-loop simulation generation after receiving feedback information from the satellite;

[0046] 10. This invention focuses on inter-satellite link function testing, paying attention not only to radio frequency indicators, but also to the correctness of information flow between satellites and the ground. It provides an inter-satellite link ground testing system that includes simulated satellite data generation, inter-satellite radio frequency indicator testing, and inter-satellite information flow comparison. Attached Figure Description

[0047] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0048] Figure 1 This is a schematic diagram of the ground test system for inter-satellite links applicable to geostationary satellites according to the present invention.

[0049] Figure 2 This is a test flowchart of the ground test method for inter-satellite links applicable to geostationary satellites according to the present invention. Detailed Implementation

[0050] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0051] Example 1:

[0052] like Figure 1 and Figure 2 As shown, this embodiment provides an inter-satellite link ground test system suitable for geostationary orbit satellites, including: an inter-satellite data simulation source device, a ground link data management device, a modem device, and an inter-satellite data comparison and verification device. The inter-satellite data simulation source device is connected to the ground link data management device and the inter-satellite data comparison and verification device. The inter-satellite data comparison and verification device is connected to the ground link data management device. The ground link data management device is connected to the modem device. The modem device transmits data to and from the satellite. The inter-satellite data simulation source device includes a multi-satellite payload data simulation generation module and a satellite constellation command generation module. The multi-satellite payload data simulation generation module and the satellite constellation command generation module are parallel modules. The satellite payload data simulation generation module is used to generate payload data, and the satellite constellation command generation module is used to generate command data.

[0053] The inter-satellite data simulation source equipment, ground link data management equipment, modem equipment, and inter-satellite data comparison and verification equipment all use a unified communication protocol.

[0054] The multi-satellite payload data simulation and generation module uses a fully digital payload data generation model. It generates various data categories, including random numbers, fixed numbers, and data generated after simulating payload observation of targets. The module performs real-time simulation and generation based on data fed back from the satellites, and sends the simulated data to the satellites to form a closed-loop simulation of payload data.

[0055] The ground link management equipment includes a command and data processing module, a scene editing module, and a data receiving and distribution module. The scene editing module is a framework module used to specify the links through which commands are transmitted and the satellites to which they are sent. The data receiving and distribution module is used to receive and send data from different devices and using different communication protocols. The command and data processing module performs secondary processing on the commands according to the requirements of the scene editing module.

[0056] Command and Data Processing Module: Configures corresponding rules based on satellite framing, custom CCSDS, and encoding requirements, and processes data of different data types, from different satellites, and with different combinations according to these rules. Scene Editing Module: Employs scene customization; scenes are edited before testing and then invoked based on the actual satellite operating conditions.

[0057] The modulation and demodulation equipment includes an RF frequency shifting module, an RF signal conditioning module, and a multi-channel modulation and demodulation module. The multi-channel modulation and demodulation module sends the modulated signal to the RF frequency shifting module, which then sends the signal to the RF signal conditioning module. The RF signal conditioning module processes the signal and sends it to the satellite.

[0058] The inter-satellite data comparison and verification equipment includes a payload data comparison module and a telemetry data presentation module, which are connected in parallel.

[0059] The payload data comparison module receives data sent by the inter-satellite data simulation source device in real time and compares the static payload simulation data and the dynamic payload simulation data in real time.

[0060] This embodiment also provides an inter-satellite link testing method suitable for geostationary orbit satellites. Based on the above-mentioned ground testing system for inter-satellite links suitable for geostationary orbit satellites, the method specifically includes the following steps:

[0061] Step 1: Based on the definitions of satellite remote control frames, telemetry frames, and CCSDS data transmission frames, edit the rules of the relevant modules of inter-satellite data simulation source equipment, modulation and demodulation equipment, ground link management equipment, and inter-satellite data comparison and verification equipment;

[0062] Step 2: Using the inter-satellite data simulation source equipment, simulate and generate characteristic payloads and command data of satellites in the constellation other than the satellite under test, and send them to the ground link management equipment through the network port;

[0063] Step 3: The ground link management equipment processes the data received from the inter-satellite data simulation source according to the scenario template and distributes it to the corresponding modulation and demodulation channels;

[0064] Step 4: The modulation and demodulation equipment modulates and encodes the digital signal according to the requirements, then moves the signal to the frequency required by the satellite and conditions the signal strength;

[0065] Step 5: After receiving the signal, the satellite processes it according to the algorithm, and then the radio frequency channel transmits the information to the modulation and demodulation equipment.

[0066] Step 6: The modem receives the signal from the satellite, conditions it, and then moves the radio frequency signal to the intermediate frequency signal that the multi-channel modem module of the modem can receive. Then it is decoded and demodulated, and sent to the inter-satellite data comparison and verification equipment and the inter-satellite data simulation source equipment via the network according to the communication protocol.

[0067] Step 7: The inter-satellite data comparison and verification equipment compares the data from the inter-satellite data simulation source with the data sent by the ground link management equipment. If an error occurs, an alarm will be issued and the location will be determined. The inter-satellite data comparison and verification equipment uses the telemetry data presentation module to judge the changes in on-board telemetry and evaluate the current status of the satellite.

[0068] Step 8: The inter-satellite data simulation source device receives on-satellite data feedback through the ground link management device, performs real-time simulation, and feeds back the simulated data to the satellite to achieve closed-loop control.

[0069] Example 2:

[0070] Those skilled in the art can understand this embodiment as a more specific description of Embodiment 1.

[0071] This embodiment provides a ground test system for inter-satellite links suitable for geostationary orbit satellites, which includes an inter-satellite data simulation source device, a ground link data management device, a modulation and demodulation device, and an inter-satellite data comparison and verification device.

[0072] The inter-satellite data simulation source equipment includes a multi-satellite payload data simulation generation module and a satellite constellation command generation module; the ground link management equipment includes a command and data processing module, a scene editing module, and a data receiving and distribution module; the modulation and demodulation equipment includes a radio frequency shifting module, a radio frequency signal conditioning module, and a multi-channel modulation and demodulation module. The inter-satellite data comparison and verification equipment includes a payload data comparison module and a telemetry data presentation module.

[0073] The inter-satellite data simulation source device uses a fully digital payload data generation module with a large capacity and strong scalability. It can simultaneously generate data from no fewer than 3 satellites, with no fewer than 10 channels for each satellite.

[0074] The multi-satellite payload data simulation and generation module can support the generation of various data categories, including but not limited to random numbers, fixed numbers, and data generated after simulating payload observation targets. It can also perform real-time simulation and generation based on data feedback from satellites, and send the simulated data to the satellites to form a closed-loop simulation of payload data.

[0075] The ground link management equipment adopts a general design concept for its command and data processing modules. It only needs to configure the corresponding rules in advance according to the satellite framing, special CCSDS, and encoding requirements to realize the data processing requirements of different data types, different satellites, and different combinations.

[0076] The ground link management equipment's scene editing module addresses the complex usage scenarios and multiple channels of high-orbit satellites by employing a scene customization approach. Scenes (such as receive-only, transmit-only, and full-duplex scenarios) are pre-edited before testing and then invoked based on the actual satellite operating conditions. The scene editing module adopts a generalization and visualization approach; adding new scenes requires no code modification, only editing on the human-machine interface, significantly reducing software configuration time.

[0077] The ground link management equipment and modem equipment, as well as the inter-satellite data comparison and verification equipment and modem equipment, all use a unified communication protocol, which has good versatility and scalability.

[0078] The inter-satellite data comparison and verification equipment adopts a high-throughput and universal design concept for its payload data comparison module. It can compare no less than 30 channels of data simultaneously and allows editing of configuration items such as data location, comparison data length, and virtual channels.

[0079] The inter-satellite data comparison and verification equipment's payload data comparison module can receive data sent by the inter-satellite data simulation source equipment in real time, enabling real-time comparison of static and dynamic payload simulation data.

[0080] Modulation and demodulation equipment: Forward modulation process: The multi-channel modulation and demodulation equipment sends the modulated signal to the frequency shifting module. After frequency shifting, the frequency shifting module sends the signal to the radio frequency signal conditioning equipment. The conditioning equipment performs signal attenuation, switching and other operations and sends the signal to the satellite. The reverse demodulation process is the same as shown in the diagram.

[0081] Ground link equipment: The scene editing module is a framework module that specifies which link the instruction is sent to and to which satellite; the data receiving and distribution module enables data reception and transmission for different devices and different communication protocols; the instruction and data processing module performs secondary processing on the instructions according to the requirements of the scene editing module.

[0082] Inter-satellite data simulation source: The multi-satellite payload data simulation generation module and the command generation module are parallel modules, one responsible for generating payload data and the other responsible for generating command data.

[0083] Inter-satellite data comparison and verification equipment: The two modules are also parallel modules, just like above.

[0084] Generalization: A generalized design for testing concepts and methods of inter-satellite links for high-orbit satellites, which can be used to test all high-orbit satellites.

[0085] Scene customization refers to customizing different satellite models within a general framework, much like how a vehicle of the same model may have a similar structure, but can display different attributes through customized paint and high- and low-end configurations.

[0086] This embodiment also provides a method for testing inter-satellite links suitable for geostationary orbit satellites, which includes the following steps:

[0087] Step 1: Based on the definitions of satellite remote control frames, telemetry frames, and CCSDS data transmission frames, edit the rules for the relevant modules of the inter-satellite data simulation source, modulation and demodulation equipment, ground link management equipment, and inter-satellite data comparison and verification equipment.

[0088] Step 2: Using the inter-satellite data simulation source equipment, simulate and generate characteristic payloads and command data of satellites in the constellation other than the satellite under test, and send them to the ground link management equipment through the network port;

[0089] Step 3: The ground link management equipment processes the data received from the inter-satellite data simulation source according to the scenario template and distributes it to the corresponding modulation and demodulation channels;

[0090] Step four: The modulation and demodulation equipment modulates and encodes the digital signal according to the requirements, then moves the signal to the frequency required by the satellite and conditions the signal strength;

[0091] Step 5: After the satellite receives the signal, it processes it according to the algorithm, and then the radio frequency channel transmits the information to the modulation and demodulation equipment.

[0092] Step 6: The modulation and demodulation equipment receives the signal transmitted by the satellite, and after conditioning, it moves the radio frequency signal to the intermediate frequency signal that the multi-channel modulation and demodulation module can receive. Then it decodes and demodulates the signal and sends it to the inter-satellite data comparison and verification equipment and the inter-satellite data simulation source equipment via the network according to the communication protocol.

[0093] Step 7: The inter-satellite data comparison and verification equipment compares the data from the inter-satellite data simulation source with the data sent by the ground link management equipment. If an error occurs, an alarm will be issued and the location will be determined. In addition, the inter-satellite data comparison and verification equipment uses the telemetry data presentation module to judge the changes in on-board telemetry and evaluate the current status of the satellite.

[0094] Step 8: The inter-satellite data simulation source device receives data feedback from the satellite through the ground link management device, performs real-time simulation, and feeds back the simulated data to the satellite to achieve the effect of closed-loop control.

[0095] This invention can meet the testing requirements of multiple satellites, multiple channels, and multiple types of inter-satellite links, and improve the testing coverage of inter-satellite links.

[0096] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. An inter-satellite link ground test system suitable for geostationary satellites, characterized in that, The application relates to a satellite data simulation source device, a ground link data management device, a modulation and demodulation device and a satellite data comparison and verification device. The satellite data simulation source device is connected with the ground link data management device and the satellite data comparison and verification device. The satellite data comparison and verification device is connected with the ground link data management device, the ground link data management device is connected with the modulation and demodulation device, and the modulation and demodulation device is connected with a satellite for data transmission. The satellite data simulation source device comprises a multi-satellite load data simulation generation module and a satellite constellation instruction generation module; the multi-satellite load data simulation generation module and the satellite constellation instruction generation module are parallel modules; the satellite load data simulation generation module is used for generating load data; and the satellite constellation instruction generation module is used for generating instruction data. The ground link data management device comprises an instruction and data processing module, a scene editing module and a data receiving and distributing module.

2. The inter-satellite link ground test system for geostationary satellites of claim 1, wherein, The scene editing module is a framework module and is used for defining a link through which an instruction passes and a satellite which transmits the instruction. The data receiving and distributing module is used for realizing data receiving and sending of different devices and different communication protocols. The instruction and data processing module processes the instruction again according to the requirement of the scene editing module. The modulation and demodulation device comprises a radio frequency shift module, a radio frequency signal conditioning module and a multi-channel modulation and demodulation module.

3. The inter-satellite link ground test system for geostationary satellites of claim 1, wherein, The multi-channel modulation and demodulation module sends the modulated signal to the radio frequency shift module, the radio frequency shift module sends the signal to the radio frequency signal conditioning module, and the radio frequency signal conditioning module sends the processed signal to a satellite. The satellite data comparison and verification device comprises a load data comparison module and a telemetry data presentation module, and the load data comparison module and the telemetry data presentation module are parallel modules.

4. The inter-satellite link ground test system for geostationary satellites of claim 1, wherein, The multi-satellite load data simulation generation module uses a full-digital load data generation model.

5. The inter-satellite link ground test system for geostationary satellites of claim 1, wherein, The multi-satellite load data simulation generation module generates multiple data categories, and the data categories include random numbers, fixed numbers and generated data after simulating load observation targets. The multi-satellite load data simulation generation module performs real-time deduction and generation according to the data fed back by a satellite, sends the deduced data to the satellite, and forms a closed loop simulation of load data. The instruction and data processing module configures corresponding rules according to the framing, special CCSDS and coding requirements of a satellite, and processes data of different data types, different satellites and different combinations according to the corresponding rules.

6. The inter-satellite link ground test system for geostationary satellites of claim 2, wherein, The scene editing module adopts scene customization, edits a scene before testing, and calls the edited scene according to the actual working condition of a satellite.

7. The inter-satellite link ground test system for geostationary satellites of claim 2, wherein, The load data comparison module receives data sent by the satellite data simulation source device in real time, and compares static load simulation data and dynamic load simulation data in real time.

8. The inter-satellite link ground test system for geostationary satellites of claim 4, wherein, The satellite data simulation source device, the ground link data management device, the modulation and demodulation device and the satellite data comparison and verification device use a unified communication protocol.

9. The inter-satellite link ground test system for geostationary satellites of claim 1, wherein, ​

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