Satellite internet semi-physical simulation test device
By designing a semi-physical simulation test device for satellite internet, the characteristics of satellite-to-ground communication links are simulated and the link model is optimized. This solves the problems of limited satellite resources and insufficient laboratory testing, and realizes low-cost and efficient dynamic closed-loop testing to evaluate the performance of ground communication devices in highly dynamic scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- UESTC (SHENZHEN) ADVANCED RES INST
- Filing Date
- 2025-07-09
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional satellite communication testing methods suffer from high testing costs and limited testing time due to limited satellite resources. Furthermore, laboratory testing cannot comprehensively evaluate the performance indicators of ground communication devices in large-scale spatiotemporal and highly dynamic scenarios of satellite-to-ground communication, such as propagation attenuation, atmospheric attenuation, Doppler shift, and time delay jitter.
Design a semi-physical simulation test device for satellite internet, including a satellite simulator, a satellite-to-ground communication link simulator, a sensor simulator, a channel parameter injector, a ground communication device, and a microwave anechoic chamber. By simulating the characteristics of the satellite-to-ground communication link, the device can collect data in real time, optimize the link model, isolate external interference, and improve the consistency of the test environment.
It achieves low-cost and high-efficiency dynamic closed-loop testing, simulates real satellite-to-ground communication scenarios, solves the problems of high testing costs and time constraints, and evaluates the performance of ground communication devices in highly dynamic scenarios.
Smart Images
Figure CN224473314U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of satellite communication testing technology, specifically to a satellite internet hardware-in-the-loop simulation testing device. Background Technology
[0002] Currently, satellite internet relies on ground communication devices to relay information through geostationary orbit (GEO) or low Earth orbit (LEO) satellite constellations. Regardless of whether it is a GEO or LEO satellite, the distance between the satellite and the ground communication device is long. The Ku / Ka / Q / V band satellite-to-ground links suffer from significant spatial propagation and atmospheric absorption attenuation. LEO satellite communication links, in particular, experience substantial Doppler shift and time delay jitter. These characteristics of satellite-to-ground communication links pose challenges to the development and testing of their products / systems.
[0003] Traditional satellite communication testing methods include two approaches: first, testing in a real-world environment using an on-orbit satellite and ground communication devices; and second, testing ground communication devices in a laboratory without considering the characteristics of the satellite-to-ground communication link and based on a static communication link environment.
[0004] The aforementioned traditional satellite communication testing methods have the following technical problems or defects: First, using on-orbit satellites and ground communication devices for testing in a real environment has limitations such as limited satellite resources and short LEO satellite overpass times, resulting in high testing costs and time constraints. Second, testing ground communication devices in the laboratory does not consider the characteristics of the satellite-to-ground communication link and is conducted according to the static environment of the communication link. This makes it impossible to comprehensively test the performance indicators of ground communication devices in the large spatiotemporal and high dynamic scenarios of satellite communication, such as propagation attenuation, atmospheric attenuation, Doppler shift, and time delay jitter. Utility Model Content
[0005] To address the technical deficiencies in the background technology, this utility model proposes a semi-physical simulation testing device for satellite internet, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows:
[0006] A semi-physical simulation test device for satellite internet includes a satellite simulator, a satellite-to-ground communication link simulator, a sensor simulator, a channel parameter injector, a ground communication device, and a microwave anechoic chamber. The satellite simulator and the satellite-to-ground communication link simulator are connected to each other and transmit space scene signals, which include orbital parameters, payload status, and gateway station configuration.
[0007] The satellite-to-ground communication link simulator communicates with the sensor simulator and transmits the final channel signal, which includes integrated link parameters and a synchronization clock signal.
[0008] The sensor simulator communicates with the channel parameter injector and transmits dynamic link signals, which include baseband control commands and radio frequency configuration parameters.
[0009] Both the channel parameter injector and the ground communication device are located inside the microwave anechoic chamber. The channel parameter injector writes the simulation parameters into the ground communication device.
[0010] The microwave anechoic chamber is equipped with a data acquisition probe that is connected to a ground communication device. The data acquisition probe is used to capture the performance indicators of the ground communication device in real time.
[0011] As a further technical solution of this utility model, the microwave anechoic chamber is equipped with a satellite signal simulation antenna that is connected to the satellite-to-ground communication link simulator and the ground communication device respectively. The satellite-to-ground communication link simulator radiates radio frequency signals to the ground communication device through the satellite signal simulation antenna.
[0012] As a further technical solution of this utility model, the sensor simulator is communicatively connected to a space disturbance simulator, and the microwave anechoic chamber is equipped with an interference simulation antenna array that is communicatively connected to the space disturbance simulator and the ground communication device respectively. The interference simulation antenna array superimposes the environmental interference signal onto the basic satellite signal and then radiates it to the ground communication device.
[0013] As a further technical solution of this utility model, the satellite-to-ground communication link simulator is connected to a two-way data feedback analyzer, which is connected to a data acquisition probe. The two-way data feedback analyzer feeds back the test results of the ground communication device obtained by the data acquisition probe to the satellite-to-ground communication link simulator.
[0014] As a further technical solution of this utility model, the satellite simulator is connected to a real-time space event injection module. The real-time space event injection module injects information into the satellite simulator in real time according to information in an external space database. The information in the external space database includes space alarm data and emergency commands.
[0015] As a further technical solution of this utility model, the satellite-to-ground communication link simulator is connected to an SDR adaptation platform, and the SDR adaptation platform inputs the future new frequency band model into the satellite-to-ground communication link simulator.
[0016] As a further technical solution of this utility model, a central turntable is provided in the center of the microwave anechoic chamber, and the ground communication device is located on the top of the central turntable, and the central turntable causes the ground communication device to rotate.
[0017] The beneficial effects of this utility model are as follows:
[0018] This invention discloses a testing device for simulating satellite internet communication. The device simulates the satellite communication process using a highly efficient dynamic closed-loop test. By collecting data during the test in real time and inputting external space situational information, the satellite-to-ground communication link simulator dynamically adjusts the link model. Furthermore, it isolates external interference through a microwave anechoic chamber, improving the consistency between the test environment and the real-world scenario. This invention solves the technical challenges of high cost, long cycle, and limited test time for on-orbit satellite testing of satellite-to-ground communication devices. It also addresses the issue that static laboratory testing of satellite-to-ground communication devices cannot meet the impact of various changes caused by the high dynamics of real-world satellite communication scenarios on communication quality. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall architecture of a semi-physical simulation test device for satellite internet.
[0020] Among them: 1-Satellite simulator, 2-Ground communication link simulator, 3-Sensor simulator, 4-Channel parameter injector, 5-Ground communication device, 6-Microwave anechoic chamber, 7-Data acquisition probe, 8-Satellite signal simulation antenna, 9-Space disturbance simulator, 10-Interference simulation antenna array, 11-Two-way data feedback analyzer, 12-Real-time space event injection module, 13-SDR adaptation platform. Detailed Implementation
[0021] The embodiments of this utility model will be described below with reference to the accompanying drawings and related examples. The embodiments of this utility model are not limited to the following examples, and this utility model relates to relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.
[0022] A semi-physical simulation test device for satellite internet includes a satellite simulator 1, a satellite-to-ground communication link simulator 2, a sensor simulator 3, a channel parameter injector 4, a ground communication device 5, and a microwave anechoic chamber 6. The satellite simulator 1 and the satellite-to-ground communication link simulator 2 are connected to transmit space scene signals, which include orbital parameters, payload status, and gateway station configuration.
[0023] The satellite-to-ground communication link simulator 2 communicates with the sensor simulator 3 and transmits the final channel signal, which includes integrated link parameters and a synchronization clock signal.
[0024] The sensor simulator 3 communicates with the channel parameter injector 4 and transmits dynamic link signals, which include baseband control commands and radio frequency configuration parameters.
[0025] Both the channel parameter injector 4 and the ground communication device 5 are located inside the microwave anechoic chamber 6. The channel parameter injector 4 writes the simulation parameters into the ground communication device 5.
[0026] The microwave anechoic chamber 6 is equipped with a data acquisition probe 7 that is connected to the ground communication device 5. The data acquisition probe 7 is used to capture the performance indicators of the ground communication device 5 in real time.
[0027] This utility model discloses a test device for simulating satellite internet communication, with reference to... Figure 1 In this testing device, satellite simulator 1 is mainly used to simulate satellite orbit, payload, and on-orbit operation. Satellite simulator 1 includes: a satellite orbit database and plugin, mainly used to store the six elements of a satellite orbit, including semi-major axis, eccentricity, orbital inclination, right ascension of the ascending node, argument of perigee, and true anomaly; a payload database and control, mainly used to manage parameters such as frequency, EIRP, and modulation mode during satellite payload operation, and can dynamically adjust antenna tilt and beam direction; and a gateway station database and control, mainly used to manage ground station RF / baseband parameters and dynamically adjust antenna pointing and transmit power.
[0028] The Satellite-Ground Communication Link Simulator 2 is mainly used to simulate the signal transmission quality between satellite and ground. It includes a Doppler effect model, a free space propagation loss model, an atmospheric absorption attenuation model, and a signal transmission delay model. Based on the space scenario, it calculates channel characteristics such as Doppler frequency shift, free space loss, atmospheric attenuation, and delay jitter.
[0029] Sensor simulator 3 connects to satellite-to-ground communication link simulator 2 and channel parameter injector 4 via API interface. It integrates simulation parameters such as Doppler frequency shift, free space loss, atmospheric attenuation, and time delay jitter generated by satellite-to-ground communication link simulator 2 to generate a high-fidelity integrated channel model. Then, the high-fidelity integrated channel model is sent to channel parameter injector 4, which directly writes the integrated channel model into the baseband chip of ground communication device 5 to achieve nanosecond-level dynamic loading.
[0030] The ground communication device 5 is located inside the microwave anechoic chamber 6, which provides an electromagnetic shielding environment to eliminate external interference and ensure high-fidelity signal simulation. The data acquisition probe 7 is directly connected to the test interface of the ground communication device 5, and the data acquisition probe 7 captures performance data such as bit error rate and throughput of the ground communication device 5 in real time.
[0031] Furthermore, referring to Figure 1The microwave anechoic chamber 6 is equipped with a satellite signal simulation antenna 8 that is connected to the satellite-to-ground communication link simulator 2 and the ground communication device 5 respectively. The satellite-to-ground communication link simulator 2 radiates radio frequency signals to the ground communication device 5 through the satellite signal simulation antenna 8. The satellite signal simulation antenna 8 is used to transmit clean satellite signals containing information such as satellite orbit and link dynamics to the ground communication device 5 to simulate the real satellite downlink.
[0032] Furthermore, the sensor simulator 3 is communicatively connected to the space disturbance simulator 9, and the microwave anechoic chamber 6 is equipped with an interference simulation antenna array 10 that is communicatively connected to the space disturbance simulator 9 and the ground communication device 5 respectively. The interference simulation antenna array 10 superimposes the environmental interference signal onto the basic satellite signal and then radiates it into the ground communication device 5. The space disturbance simulator 9 is used to calculate interference parameters such as cosmic noise, rain attenuation, and ionospheric scintillation, and by superimposing interference signals such as cosmic noise, rain attenuation, and ionospheric scintillation in cooperation with the interference simulation antenna array 10, environmental interference is superimposed on the basic satellite signal to reproduce the real communication scenario.
[0033] As one of the preferred embodiments of this utility model, refer to Figure 1 The satellite-to-ground communication link simulator 2 is connected to a two-way data feedback analyzer 11, which is also connected to a data acquisition probe 7. The two-way data feedback analyzer 11 feeds back the test results of the ground communication device 5 obtained from the data acquisition probe 7 to the satellite-to-ground communication link simulator 2. The data acquisition probe 7 feeds back the performance data of the ground communication device 5 to the two-way data feedback analyzer 11 at high speed, which is mainly used to drive the iteration of simulation parameters. The satellite-to-ground communication link simulator 2 dynamically optimizes the link model based on the test results of the ground communication device 5, making the satellite communication simulation test more in line with the actual performance of the equipment, and realizing adaptive testing environment and closed-loop optimization within the testing device.
[0034] As one of the preferred embodiments of this utility model, refer to Figure 1 The satellite simulator 1 is connected to a real-time space event injection module 12. The real-time space event injection module 12 injects information from an external space database into the satellite simulator 1 in real time. The information in the external space database includes space alarm data and emergency commands. The real-time space event injection module 12 inputs space alarm data such as solar flare level and orbital collision probability, as well as emergency commands such as satellite emergency collision avoidance maneuvers, into the satellite simulator 1 in real time. By injecting external space situation information into the test system in real time, it triggers high-dynamic scene changes and verifies the robustness of the test device under extreme conditions.
[0035] As one of the preferred embodiments of this utility model, refer to Figure 1The satellite-to-ground communication link simulator 2 is connected to the SDR adaptation platform 13. The SDR adaptation platform 13 inputs the new frequency band model into the satellite-to-ground communication link simulator 2. The SDR adaptation platform 13 dynamically loads the new frequency band model, such as terahertz channel parameters and optical link attenuation coefficient, into the satellite-to-ground communication link simulator 2, so as to avoid the test system being eliminated due to technological iteration and enable the test device to support seamless upgrade to 6G or higher frequency bands.
[0036] As one of the preferred embodiments of this utility model, a central turntable is provided in the center of the microwave anechoic chamber 6, and the ground communication device 5 is located on the top of the central turntable. The central turntable causes the ground communication device 5 to rotate. The central turntable is used to drive the ground communication device 5 to rotate inside the microwave anechoic chamber 6, so that the ground communication device 5 simulates the movement trajectory of the communication terminal and maintains the authenticity of the satellite communication test process.
[0037] In summary, this utility model discloses a testing device for simulating satellite internet communication. This testing device simulates the satellite communication process using efficient dynamic closed-loop testing. By collecting data during the testing process in real time and inputting external space situational information, the satellite-to-ground communication link simulator 2 dynamically adjusts the link model. Furthermore, external interference is isolated by a microwave anechoic chamber 6, improving the consistency between the testing environment and the real-world scenario. This utility model's testing device solves the technical problems of high cost, long cycle, and limited testing time for on-orbit satellite testing of satellite-to-ground communication devices. It also addresses the issue that testing in a static laboratory environment cannot meet the impact of various changes on communication quality caused by the high dynamics of real-world satellite communication scenarios.
[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A semi-physical simulation test device for satellite internet, comprising a satellite simulator (1), a satellite-to-ground communication link simulator (2), a sensor simulator (3), a channel parameter injector (4), a ground communication device (5), and a microwave anechoic chamber (6), characterized in that, The satellite simulator (1) communicates with the satellite-to-ground communication link simulator (2) and transmits space scene signals, which include orbital parameters, payload status, and gateway configuration. The satellite-to-ground communication link simulator (2) communicates with the sensor simulator (3) and transmits the final channel signal, which includes integrated link parameters and a synchronization clock signal. The sensor simulator (3) communicates with the channel parameter injector (4) and transmits dynamic link signals, which include baseband control commands and radio frequency configuration parameters. The channel parameter injector (4) and the ground communication device (5) are both located inside the microwave anechoic chamber (6). The channel parameter injector (4) writes the simulation parameters into the ground communication device (5). The microwave anechoic chamber (6) is equipped with a data acquisition probe (7) that is connected to the ground communication device (5). The data acquisition probe (7) is used to capture the performance indicators of the ground communication device (5) in real time.
2. The satellite internet hardware-in-the-loop simulation test device according to claim 1, characterized in that, The microwave anechoic chamber (6) is equipped with a satellite signal simulation antenna (8) that is connected to the satellite-to-ground communication link simulator (2) and the ground communication device (5) respectively. The satellite-to-ground communication link simulator (2) radiates radio frequency signals to the ground communication device (5) through the satellite signal simulation antenna (8).
3. The satellite internet hardware-in-the-loop simulation test device according to claim 1, characterized in that, The sensor simulator (3) is connected to the space disturbance simulator (9). The microwave anechoic chamber (6) is equipped with an interference simulation antenna array (10) that is connected to the space disturbance simulator (9) and the ground communication device (5) respectively. The interference simulation antenna array (10) superimposes the environmental interference signal onto the basic satellite signal and then radiates it into the ground communication device (5).
4. The satellite internet hardware-in-the-loop simulation test device according to claim 1, characterized in that, The satellite-to-ground communication link simulator (2) is connected to a two-way data feedback analyzer (11), which is connected to a data acquisition probe (7). The two-way data feedback analyzer (11) feeds back the test results of the ground communication device (5) obtained by the data acquisition probe (7) to the satellite-to-ground communication link simulator (2).
5. The satellite internet hardware-in-the-loop simulation test device according to claim 1, characterized in that, The satellite simulator (1) is connected to a real-time space event injection module (12). The real-time space event injection module (12) injects information from an external space database into the satellite simulator (1) in real time. The information in the external space database includes space alarm data and emergency commands.
6. The satellite internet hardware-in-the-loop simulation test device according to claim 1, characterized in that, The satellite-to-ground communication link simulator (2) is connected to an SDR adaptation platform (13), which inputs the future new frequency band model into the satellite-to-ground communication link simulator (2).
7. The satellite internet hardware-in-the-loop simulation test device according to claim 1, characterized in that, The microwave anechoic chamber (6) has a central turntable in the center, and the ground communication device (5) is located on top of the central turntable. The central turntable causes the ground communication device (5) to rotate.