CN116683968A - Inter-satellite link ground test system and method suitable for static orbit satellite - Google Patents
Inter-satellite link ground test system and method suitable for static orbit satellite Download PDFInfo
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- H—ELECTRICITY
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
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- H—ELECTRICITY
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- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
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Abstract
The application provides an inter-satellite link ground test system and method suitable for a static orbit satellite, comprising the following steps: the system comprises 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 equipment is connected with the ground link data management equipment and the inter-satellite data comparison verification equipment; the inter-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 modem device, and data transmission is carried out between the modem device and a satellite; the inter-satellite data simulation source equipment comprises a multi-satellite load data simulation generation module and a satellite constellation instruction generation module. The application can meet the testing requirements of multi-star, multi-channel and multi-type inter-satellite links, and improves the testing coverage of the inter-satellite links.
Description
Technical Field
The application relates to the technical field of aerospace, in particular to an inter-satellite link ground test system and method suitable for a static orbit satellite.
Background
In recent years, with the upgrade of satellite industrialization, satellite constellation has become a trend, and an inter-satellite link subsystem is an important group part for implementing inter-constellation communication. The inter-satellite link system mainly comprises a radio frequency unit and a link control unit, and the inter-satellite link of the previous model mainly realizes inter-satellite measurement, so that the radio frequency index is mainly tested during ground test. The inter-satellite link system of the high-orbit static orbit satellite has the characteristics of high data flux and multiple channels, so that the test cannot only pay attention to radio frequency indexes, but can be used for carrying out important verification on load and measurement and control data streams. Meanwhile, due to restriction factors such as single machine production, satellites in a constellation cannot be tested at the same time in a factory building, and in order to verify the effectiveness of inter-satellite data transmission, the satellites which are not present are required to be simulated as truly as possible. The satellite test has higher requirements, and for the requirements, development of a whole set of inter-satellite link ground test system for the static orbit satellite, which covers inter-satellite data simulation, inter-satellite radio frequency index test and inter-satellite information flow verification, is needed.
Patent document with publication number CN105549382B discloses an automatic satellite constellation testing device and method, the device mainly comprises: the test control module is used for generating a test control instruction; the data transmitting module is used for reading the test service data from the basic database according to the test control instruction and transmitting the test service data to the satellite to be tested, and the satellite controls other satellites in the constellation to act according to the test service data; the test service data comprises remote control instructions, telemetry parameters, instruction criteria and test sequences of all satellites in a satellite constellation; the data acquisition module is used for acquiring and storing data transmitted by all satellites in the satellite constellation; and the data interpretation module is used for interpreting the data sent by all satellites and obtaining the test result of the test control instruction according to the preset inter-satellite criteria. However, this patent document does not have a function of generating a command sequence at the rear end of the satellite test, and does not have a function of generating payload data.
Patent document publication No. CN106569054a discloses a multi-satellite asynchronous intelligent test system, comprising: front-end equipment, control center, data storage disk control array and monitor terminal, wherein: the front-end equipment is used for forwarding a test instruction to the satellite, completing acquisition, storage and forwarding of downlink data generated in the satellite test process and comprises a plurality of channels which are respectively and simultaneously used for data transmission with a plurality of satellites; the control center is used for realizing the editing and management of test instructions, test cases and test rules of a plurality of satellites, sending the test instructions to the front-end equipment, receiving and forwarding downlink data sent by the front-end equipment; the data storage disk array is used for collecting and storing downlink data sent by the control center; the monitoring terminal is used for inquiring and analyzing the downlink data stored in the data storage disk array; and the control center, the data storage disk array and the monitoring terminal are all accessed to the Ethernet. However, the patent document does not support the single star instruction sequence generation capability in the constellation, and cannot meet the instruction generation requirement between constellations.
The patent document with publication number of CN202632091U discloses a three-star constellation distributed parallel test system, aiming at the characteristics of each three-star test stage, the ground electric support equipment architecture which originally needs three sets of test equipment to finish three-star test is unified into a set of multi-link and multi-channel integrated test system according to the mode of unified network centralized control and various equipment distribution implementation, the centralized control function of a master node is kept by adopting the mode of a master-slave network architecture, dynamic management and distribution are carried out on slave nodes, and the slave nodes can be added into or withdrawn from the integrated test system according to satellite states and test stages, so that four test modes of three-star synchronous parallel test, constellation joint test, three-star asynchronous off-site test and three-star distributed parallel heat test are formed. However, this patent document only realizes three-star parallel testing, and has limitations.
The patent document with the publication number of CN107196695A discloses a Zynq-based satellite inter-satellite link testing system, which is used for solving the technical problems of complex structure and low testing efficiency in the prior art, and comprises an upper computer and a system hardware platform which are connected through an Ethernet; the upper computer comprises a data generation module, a function configuration module and a link analysis module; the system hardware platform comprises a network module, a Zynq chip, a memory module, an intermediate frequency modulation module, a baseband acquisition module and a power module, wherein the Zynq chip comprises an on-chip processing system and a functional logic module; the upper computer control system hardware platform outputs carrier frequency, output power and code rate of intermediate frequency signals, generates baseband data required by links to be tested, downloads the baseband data to the system hardware platform through a network to carry out QPSK modulation and send the baseband data to the links to be tested, and simultaneously receives the returned data of a plurality of links to be tested collected by the system hardware platform to carry out real-time error code analysis and data storage, so that the link test is completed. However, the patent document has a defect that the real simulation data of the load cannot be generated.
Patent document with publication number CN113452437a discloses an inter-satellite laser link test simulation system for space optical communication, which comprises a reflective collimator, a galvanometer, a beam splitting prism, an optical fiber coupler, a beam analyzer, a wavelength division multiplexer, an optical circulator, an avalanche type photoelectric detector, an FPGA control unit, a laser, a power supply unit and a two-dimensional turntable. However, the patent document still has the defect that the inter-satellite data simulation, the inter-satellite radio frequency index test and the inter-satellite information flow verification cannot be covered.
Disclosure of Invention
Aiming at the defects in the prior art, the application aims to provide an inter-satellite link ground test system and method suitable for a static orbit satellite.
According to the application, an inter-satellite link ground test system suitable for a stationary orbit satellite comprises: the system comprises 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 equipment is connected with the ground link data management equipment and the inter-satellite data comparison verification equipment;
the inter-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 modem device, and data transmission is carried out between the modem device and a satellite;
the inter-satellite data simulation source equipment 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 connected in parallel, 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.
Preferably, the ground link management device comprises an instruction and data processing module, a scene editing module and a data receiving and distributing module;
the scene editing module is a frame module and is used for defining a link through which the instruction passes and a satellite for sending;
the data receiving and distributing module is used for receiving and transmitting data of different equipment and different communication protocols;
and the instruction and data processing module carries out secondary processing on the instruction according to the requirement of the scene editing module.
Preferably, the modem device comprises a radio frequency moving module, a radio frequency signal conditioning module and a multichannel modem module;
the multi-channel modulation and demodulation module sends the modulated signals to the radio frequency moving module, the frequency moving module sends the signals to the radio frequency signal conditioning module, and the radio frequency signal conditioning module processes the signals and sends the processed signals to a satellite.
Preferably, the inter-satellite data comparison and verification device comprises a load data comparison module and a telemetry data presentation module; the load data comparison module and the telemetry data presentation module are connected in parallel.
Preferably, the multi-satellite load data simulation generation module uses a full-digital load data generation model;
the multi-satellite load data simulation generation module generates various data categories, wherein the data categories comprise 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 data fed back by the satellite, and sends the deduced data to the satellite to form closed loop simulation of the load data.
Preferably, the instruction and data processing module: corresponding rules are configured according to the framing of satellites, special CCSDS and coding requirements, and data of different data types, different satellites and different combinations are processed according to the corresponding rules.
Preferably, the scene editing module: and editing the scene before testing by adopting scene customization, and calling the edited scene according to the actual working condition of the satellite.
Preferably, the load data comparison module receives the data sent by the inter-satellite data simulation source device in real time, and compares static load simulation data with dynamic load simulation data in real time.
Preferably, the inter-satellite data simulation source device, the ground link data management device, the modem device and the inter-satellite data comparison verification device use a unified communication protocol.
The application also provides a method for testing the inter-satellite link applicable to the static orbit satellite, which is based on the inter-satellite link ground test system applicable to the static orbit satellite, and specifically comprises the following steps:
step 1: editing rules of relevant modules of inter-satellite data simulation source equipment, modulation-demodulation equipment, ground link management equipment and inter-satellite data comparison verification equipment according to remote control frames, telemetry frames and CCSDS data transmission frame definitions of satellites;
step 2: simulating source equipment by using inter-satellite data, simulating and generating characteristic loads and instruction data of satellites except the measured satellite in a constellation, and transmitting the characteristic loads and instruction data to ground link management equipment through a network port;
step 3: the ground link management equipment processes the data received from the inter-satellite data simulation source according to the scene template and distributes the data to the corresponding channels of the modulation and demodulation;
step 4: the modulation and demodulation equipment modulates and codes the digital signal according to the requirement, then moves the signal to the frequency required by the satellite, and conditions the signal intensity;
step 5: after receiving the signal, the satellite processes the signal according to the algorithm, and the channel radio frequency channel transmits the information to the modulation and demodulation equipment
Step 6: the modulation and demodulation equipment receives signals sent by satellites, after conditioning, the radio frequency signals are moved to intermediate frequency signals which can be received by a multichannel modulation and demodulation module of the modulation and demodulation equipment, then decoding and demodulation are carried out, and the signals are sent to the inter-satellite data comparison and verification equipment and the inter-satellite data simulation source equipment by using a network according to a communication protocol;
step 7: the inter-satellite data comparison and verification equipment compares the inter-satellite data simulation source with data sent by the ground link management equipment, and if error codes occur, an alarm is sent out and positioning is carried out; the inter-satellite data comparison and verification equipment judges the on-satellite telemetry change by using a telemetry data presentation module and evaluates the current state of the satellite;
step 8: the inter-satellite data simulation source equipment receives the feedback of the on-satellite data through the ground link management equipment, performs real-time deduction, and feeds the deduced simulation data back to the satellite again to realize closed-loop control.
Compared with the prior art, the application has the following beneficial effects:
1. the test system has strong universality, the interfaces among the devices of the system are unified, all adopt networks for communication, and do not need to design interface driving circuits such as RS422, 1553B and the like, so that plug and play is realized;
2. the test system has strong expansibility, the same communication protocol is adopted among all the devices of the system, and the test system can be self-adaptive according to the test quantity requirements of satellites and channels without changing codes;
3. the test system has strong operability, can be developed secondarily, is friendly in human-computer interface and convenient to operate, can develop an automatic program control flow, and realizes satellite automatic test;
4. the test system has high coverage, the application comprises load data simulation, inter-satellite radio frequency index test and inter-satellite information flow verification, a whole set of inter-satellite link test solution is provided, and the inter-satellite link subsystem test coverage is greatly improved;
5. the application designs a set of inter-satellite link testing system which is suitable for the static orbit satellite, can meet the testing requirements of multi-satellite, multi-channel and multi-type inter-satellite links, and improves the testing coverage of the inter-satellite links; the application has strong expansibility of each module frame, matching among modules, good adaptability and universality;
6. the application not only has the function of generating the instruction sequence at the rear end of the satellite test, but also has the function of generating load data; the application not only supports the single star instruction sequence generating capability in the constellation, but also meets the instruction generating requirement between constellations;
7. the application not only has telemetry presentation capability, but also has load data comparison and verification functions;
8. the application has expansibility, and is not limited to three-star parallel test;
9. the application has a data generation module, generates real simulation data of load, and performs closed loop simulation generation after receiving feedback information of a satellite;
10. the application focuses on the inter-satellite link function test, not only focuses on radio frequency indexes, but also focuses on the correctness of information flow between stars and the satellite and provides a set of inter-satellite link ground test system comprising simulated satellite data generation, inter-satellite radio frequency index test and inter-satellite information flow comparison.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic block diagram of an inter-satellite link ground test system suitable for use with stationary orbiting satellites in accordance with the present application;
fig. 2 is a test flow chart of the inter-satellite link ground test method applicable to the stationary orbit satellite of the application.
Detailed Description
The present application will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present application, but are not intended to limit the application in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present application.
Example 1:
as shown in fig. 1 and 2, the present embodiment provides an inter-satellite link ground test system suitable for a stationary orbit satellite, including: the system comprises an inter-satellite data simulation source device, a ground link data management device, a modem device and an inter-satellite data comparison verification device, wherein the inter-satellite data simulation source device is connected with the ground link data management device and the inter-satellite data comparison verification device, the inter-satellite data comparison verification device is connected with the ground link data management device, the ground link data management device is connected with the modem device, data are carried out between the modem device and a satellite, the inter-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 connected in parallel, 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 system comprises an inter-satellite data simulation source device, a ground link data management device, a modem device and an inter-satellite data comparison verification device, wherein a unified communication protocol is used among the devices.
The multi-satellite load data simulation generation module uses a full-digital load data generation model, generates various data types including random numbers, fixed numbers and generated data after simulating load observation targets, performs real-time deduction and generation according to data fed back by satellites, and sends the deduced data to the satellites to form closed loop simulation of the load data.
The ground link management equipment comprises an instruction and data processing module, a scene editing module and a data receiving and distributing module, wherein the scene editing module is a frame module and is used for prescribing links through which the instruction passes and satellites for sending, the data receiving and distributing module is used for realizing data receiving and sending of different equipment and different communication protocols, and the instruction and data processing module carries out secondary processing on the instruction according to the requirements of the scene editing module.
Instruction and data processing module: corresponding rules are configured according to the framing of satellites, special CCSDS and coding requirements, and data of different data types, different satellites and different combinations are processed according to the corresponding rules. A scene editing module: and editing the scene before testing by adopting scene customization, and calling the edited scene according to the actual working condition of the satellite.
The modulation and demodulation equipment comprises a radio frequency moving module, a radio frequency signal conditioning module and a multichannel modulation and demodulation module, wherein the multichannel modulation and demodulation module sends modulated signals to the radio frequency moving module, the frequency moving module sends the signals to the radio frequency signal conditioning module, and the radio frequency signal conditioning module processes the signals and sends the signals to the satellite.
The inter-satellite data comparison and verification device comprises a load data comparison module and a telemetry data presentation module, wherein the load data comparison module and the telemetry data presentation module are connected in parallel.
The load data comparison module receives data sent by the inter-satellite data simulation source equipment in real time and compares static load simulation data with dynamic load simulation data in real time.
The embodiment also provides an inter-satellite link testing method suitable for the stationary orbit satellite, which is based on the inter-satellite link ground testing system suitable for the stationary orbit satellite, and specifically comprises the following steps:
step 1: editing rules of relevant modules of inter-satellite data simulation source equipment, modulation-demodulation equipment, ground link management equipment and inter-satellite data comparison verification equipment according to remote control frames, telemetry frames and CCSDS data transmission frame definitions of satellites;
step 2: simulating source equipment by using inter-satellite data, simulating and generating characteristic loads and instruction data of satellites except the measured satellite in a constellation, and transmitting the characteristic loads and instruction data to ground link management equipment through a network port;
step 3: the ground link management equipment processes the data received from the inter-satellite data simulation source according to the scene template and distributes the data to the corresponding channels of the modulation and demodulation;
step 4: the modulation and demodulation equipment modulates and codes the digital signal according to the requirement, then moves the signal to the frequency required by the satellite, and conditions the signal intensity;
step 5: after receiving the signal, the satellite processes the signal according to the algorithm, and the channel radio frequency channel transmits the information to the modulation and demodulation equipment
Step 6: the modulation and demodulation equipment receives signals sent by satellites, after conditioning, the radio frequency signals are moved to intermediate frequency signals which can be received by a multichannel modulation and demodulation module of the modulation and demodulation equipment, then decoding and demodulation are carried out, and the signals are sent to the inter-satellite data comparison and verification equipment and the inter-satellite data simulation source equipment by using a network according to a communication protocol;
step 7: the inter-satellite data comparison and verification equipment compares the inter-satellite data simulation source with data sent by the ground link management equipment, and if error codes occur, an alarm is sent out and positioning is carried out; the inter-satellite data comparison and verification equipment judges the on-satellite telemetry change by using a telemetry data presentation module and evaluates the current state of the satellite;
step 8: the inter-satellite data simulation source equipment receives the feedback of the on-satellite data through the ground link management equipment, performs real-time deduction, and feeds the deduced simulation data back to the satellite again to realize closed-loop control.
Example 2:
the present embodiment will be understood by those skilled in the art as a more specific description of embodiment 1.
The embodiment provides an inter-satellite link ground test system suitable for a static orbit satellite, which comprises an inter-satellite data simulation source device, a ground link data management device, a modem device and an inter-satellite data comparison verification device.
The inter-satellite data simulation source equipment comprises a multi-satellite load data simulation generation module and a satellite constellation instruction generation module; the ground link management equipment comprises an instruction and data processing module, a scene editing module and a data receiving and distributing module; the modulation and demodulation equipment comprises a radio frequency moving module, a radio frequency signal conditioning module and a multichannel modulation and demodulation module. The inter-satellite data comparison and verification device comprises a load data comparison module and a telemetry data presentation module.
The inter-satellite data simulation source equipment has the advantages that the multi-satellite load data simulation generation module uses the full-digital load data generation model, so that the capacity is large, and the expansibility is strong. Not less than 3 satellites may be generated simultaneously, with not less than 10 channels of data per satellite.
The multi-satellite load data simulation generation module can support generation of various data types, wherein the data types comprise, but are not limited to, random numbers, fixed numbers and generated data after simulating a load observation target, and the data are deduced and generated in real time according to data fed back by satellites, and the deduced data are sent to the satellites to form closed loop simulation of the load data;
the ground link management equipment, the instruction and data processing module adopts a generalized design idea, and can realize the data processing requirements of different data types, different satellites and different combinations only by configuring corresponding rules in advance according to the framing, special CCSDS and coding requirements of the satellites.
The ground link management device, the scene editing module adopts the scene customizing thought aiming at the background of complex use scene and more channels of the high orbit satellite. Editing scenes (such as only receiving scenes, only sending scenes, duplex scenes and the like) in advance before testing, and calling according to actual working conditions of satellites; the scene editing module adopts a generalized and visual idea, does not need to modify codes when a scene is newly added, only needs to edit on a human-computer interface, and greatly reduces software configuration time;
the ground link management device, the modem device, the inter-satellite data comparison verification device and the modem device use a unified communication protocol, and have good universality and expansibility;
the inter-satellite data comparison verification device adopts a high-throughput and generalized design idea, can simultaneously compare at least 30 channels of data, and can edit configuration items such as data positions, comparison data lengths, virtual channels and the like.
And the load data comparison module can receive data transmitted by the inter-satellite data simulation source equipment in real time, so that real-time comparison of static and dynamic load simulation data is realized.
A modulation and demodulation device: forward modulation process: the multichannel modulation and demodulation equipment sends the modulated signals to a frequency shifting module, and after frequency shifting, the frequency shifting module sends the signals to a radio frequency signal conditioning equipment which carries out operations such as signal attenuation, switching and the like and sends the signals to a satellite; reverse demodulation of the signal, and similarly, the reverse process.
Ground link equipment: the scene editing module is a frame module and is used for defining which link the instruction is sent to which star; the data receiving and distributing module is used for receiving and transmitting data of different devices and different communication protocols; and the instruction and data processing module carries out secondary processing on the instruction according to the requirements of the scene editing module.
Inter-satellite data simulation source: the multi-satellite load data simulation generation module and the instruction generation module are connected in parallel, and one module is responsible for generating load data and the other module is responsible for generating instruction data.
Inter-satellite data comparison and verification equipment: the two modules are also parallel modules.
Generalizing: a generalized design of testing ideas and methods for high-orbit satellites inter-satellite links, all high-orbit satellites can be tested by using the framework.
The scene customization refers to customization aiming at satellites of different types under a generalized framework, and the structure of the satellite is approximately the same as that of a vehicle of the same type, but the vehicle is enabled to display different attributes through the customization of paint spraying and high-low grade configuration.
The embodiment also provides an inter-satellite link testing method suitable for a stationary orbit satellite, which comprises the following steps:
step one, editing rules of relevant modules of inter-satellite data simulation sources, modulation and demodulation equipment, ground link management equipment and inter-satellite data comparison verification equipment according to remote control frames, telemetry frames and CCSDS data transmission frame definitions of satellites;
simulating source equipment by using inter-satellite data, simulating and generating characteristic load and instruction data of satellites except the measured satellite in a constellation, and transmitting the characteristic load and instruction data to ground link management equipment through a network port;
step three, the ground link management equipment processes the data received from the inter-satellite data simulation source according to the scene template and distributes the data to the corresponding channels of the modulation and demodulation;
modulating and encoding the digital signals according to the requirements by using a modulation and demodulation device, then moving the signals to the frequency required by a satellite, and conditioning the signal intensity;
step five, after the satellite receives the signal, the satellite processes the signal according to an algorithm, and the channel radio frequency channel transmits information to the modulation and demodulation equipment;
step six, the modulation and demodulation equipment receives signals sent by satellites, after conditioning, the radio frequency signals are moved to intermediate frequency signals which can be received by the multi-channel modulation and demodulation module, then decoding and demodulation are carried out, and the signals are sent to the inter-satellite data comparison and verification equipment and the inter-satellite data simulation source equipment by utilizing a network according to a communication protocol;
step seven, the inter-satellite data comparison verification equipment compares the inter-satellite data simulation source with the data sent by the ground link management equipment, and if error codes occur, an alarm is sent out and positioning is carried out; the inter-satellite data comparison and verification equipment judges the on-satellite telemetry change by using a telemetry data presentation module and evaluates the current state of the satellite;
and step eight, the inter-satellite data simulation source equipment receives on-satellite data feedback through the ground link management equipment, performs real-time deduction, and feeds back the deduced simulation data to the satellite again, so that the effect of closed-loop control is achieved.
The application can meet the testing requirements of multi-star, multi-channel and multi-type inter-satellite links, and improves the testing coverage of the inter-satellite links.
The foregoing describes specific embodiments of the present application. It is to be understood that the application is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the application. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. An inter-satellite link ground testing system for use with a stationary orbiting satellite comprising: the system comprises 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 equipment is connected with the ground link data management equipment and the inter-satellite data comparison verification equipment;
the inter-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 modem device, and data transmission is carried out between the modem device and a satellite;
the inter-satellite data simulation source equipment 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 connected in parallel, 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.
2. The ground testing system for an inter-satellite link for stationary orbiting satellites of claim 1 wherein the ground link management device comprises an instruction and data processing module, a scene editing module, and a data receiving and distribution module;
the scene editing module is a frame module and is used for defining a link through which the instruction passes and a satellite for sending;
the data receiving and distributing module is used for receiving and transmitting data of different equipment and different communication protocols;
and the instruction and data processing module carries out secondary processing on the instruction according to the requirement of the scene editing module.
3. The inter-satellite link ground test system for stationary orbit satellites according to claim 1, wherein the modem device comprises a radio frequency shifting module, a radio frequency signal conditioning module and a multichannel modem module;
the multi-channel modulation and demodulation module sends the modulated signals to the radio frequency moving module, the frequency moving module sends the signals to the radio frequency signal conditioning module, and the radio frequency signal conditioning module processes the signals and sends the processed signals to a satellite.
4. The inter-satellite link ground test system for stationary orbiting satellites of claim 1 wherein the inter-satellite data comparison verification device comprises a payload data comparison module and a telemetry data presentation module, the payload data comparison module and the telemetry data presentation module being parallel modules.
5. The inter-satellite link ground test system for stationary orbiting satellites of claim 1 wherein the multi-satellite payload data simulation generation module uses a full digital payload data generation model;
the multi-satellite load data simulation generation module generates various data categories, wherein the data categories comprise 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 data fed back by the satellite, and sends the deduced data to the satellite to form closed loop simulation of the load data.
6. The inter-satellite link ground testing system for stationary orbiting satellites of claim 1, wherein the instruction and data processing module: corresponding rules are configured according to the framing of satellites, special CCSDS and coding requirements, and data of different data types, different satellites and different combinations are processed according to the corresponding rules.
7. The inter-satellite link ground test system for stationary orbiting satellites of claim 1, wherein the scene editing module: and editing the scene before testing by adopting scene customization, and calling the edited scene according to the actual working condition of the satellite.
8. The ground test system for an inter-satellite link for a stationary orbit satellite according to claim 1, wherein the load data comparison module receives data transmitted from the inter-satellite data simulation source device in real time and compares static load simulation data with dynamic load simulation data in real time.
9. The ground test system for an inter-satellite link for a stationary orbiting satellite as recited in claim 1, wherein said inter-satellite data analog source device, said ground link data management device, said modem device and said inter-satellite data alignment verification device use a unified communication protocol between each device.
10. An inter-satellite link testing method applicable to a stationary orbit satellite, which is based on the inter-satellite link ground testing system applicable to the stationary orbit satellite according to any one of claims 1 to 9, and specifically comprises the following steps:
step 1: editing rules of relevant modules of inter-satellite data simulation source equipment, modulation-demodulation equipment, ground link management equipment and inter-satellite data comparison verification equipment according to remote control frames, telemetry frames and CCSDS data transmission frame definitions of satellites;
step 2: simulating source equipment by using inter-satellite data, simulating and generating characteristic loads and instruction data of satellites except the measured satellite in a constellation, and transmitting the characteristic loads and instruction data to ground link management equipment through a network port;
step 3: the ground link management equipment processes the data received from the inter-satellite data simulation source according to the scene template and distributes the data to the corresponding channels of the modulation and demodulation;
step 4: the modulation and demodulation equipment modulates and codes the digital signal according to the requirement, then moves the signal to the frequency required by the satellite, and conditions the signal intensity;
step 5: after receiving the signal, the satellite processes the signal according to the algorithm, and the channel radio frequency channel transmits the information to the modulation and demodulation equipment
Step 6: the modulation and demodulation equipment receives signals sent by satellites, after conditioning, the radio frequency signals are moved to intermediate frequency signals which can be received by a multichannel modulation and demodulation module of the modulation and demodulation equipment, then decoding and demodulation are carried out, and the signals are sent to the inter-satellite data comparison and verification equipment and the inter-satellite data simulation source equipment by using a network according to a communication protocol;
step 7: the inter-satellite data comparison and verification equipment compares the inter-satellite data simulation source with data sent by the ground link management equipment, and if error codes occur, an alarm is sent out and positioning is carried out; the inter-satellite data comparison and verification equipment judges the on-satellite telemetry change by using a telemetry data presentation module and evaluates the current state of the satellite;
step 8: the inter-satellite data simulation source equipment receives the feedback of the on-satellite data through the ground link management equipment, performs real-time deduction, and feeds the deduced simulation data back to the satellite again to realize closed-loop control.
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| CN117560069A (en) * | 2024-01-12 | 2024-02-13 | 南京典格通信科技有限公司 | Broadcast number system and method for satellite terminal data link verification |
| CN117560069B (en) * | 2024-01-12 | 2024-03-15 | 南京典格通信科技有限公司 | Broadcast number system and method for satellite terminal data link verification |
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