A remote sensing satellite coded adjustment function testing method and system
A technology for remote sensing satellites and functional testing, applied in transmission systems, radio transmission systems, electrical components, etc., can solve problems such as poor test results and poor efficiency
Active Publication Date: 2022-04-12
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology
[0004] The technical problem solved by this application is: Aiming at the problem of poor test effect and efficiency in the prior art, this application provides a remote sensing satellite variable coding modulation function test method and system, and simulates telemetry by establishing a channel transmission model of remote sensing satellite The signal transmission function of the satellite, and the operation of the remote sensing satellite are simulated according to the on-orbit operation status information sent by the remote sensing satellite, so as to realize the simulation of the function of the remote sensing satellite simulation remote sensing satellite based on the actual information on the remote sensing satellite and improve the degree of test system dynamics, and then Improve test results and poor efficiency
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[0055] In order to better understand the above technical solutions, the technical solutions of the present application will be described in detail below through the accompanying drawings and specific examples. It should be understood that the embodiments of the present application and the specific features in the examples are detailed descriptions of the technical solutions of the present application, and It is not a limitation to the technical solutions of the present application, and the embodiments of the present application and the technical features in the embodiments can be combined without conflict.
[0056] see figure 1 , the embodiment of the present application provides a remote sensing satellite variable coding modulation function test system, the system includes: attenuator 1, noise source 2 and computer equipment 3; wherein,
[0057] The attenuator 1 is configured to generate an attenuation parameter and send the attenuation parameter to the computer device 3;
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The present application discloses a method and system for testing a variable coding modulation function of a remote sensing satellite. The method includes: establishing a channel transmission model of a remote sensing satellite, and simulating transmission of a variable coding modulation signal sent by a remote sensing satellite according to the channel transmission model to obtain a first variable coding and modulation signal. Coded modulated signal; according to the initial attenuation value and initial signal-to-noise ratio of the channel transmission model and the first variable coded modulated signal, determine the variation rule of the channel bit error rate with the signal-to-noise ratio, and compare the variation rule with the preset expected variation rule Yes, the first comparison result is obtained; the on-orbit operating status information sent by the remote sensing satellite is received, the second variable coding modulation signal is simulated and generated according to the on-orbit operating status information, and the variable coding modulation signal sent by the remote sensing satellite and the second variable coding modulation signal are compared. A second comparison result is obtained by changing the coding modulation signal, and a test report is generated according to the first comparison result and the second comparison result. The present application solves the technical problems of poor test effect and efficiency in the prior art.
Description
technical field [0001] The present application relates to the technical field of remote sensing satellite variable coding modulation function testing, in particular to a remote sensing satellite variable coding modulation function testing method and system. Background technique [0002] The variable coding and modulation function is a technology that enables different sites and services to use different coding and modulation methods on a shared carrier. In order to make efficient use of the signal transmission channel during the satellite’s in-orbit operation, this modulation technology is applied to the remote sensing satellite for the first time. During the satellite’s in-orbit operation, the radial distance between the on-board antenna and the tracked ground station is calculated in real time , using different modulation modes at different radial distances, so as to efficiently utilize the signal transmission channel. In order to detect the effect of remote sensing satel...
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IPC IPC(8): H04B7/185
CPCH04B7/18519
Inventor 李硕卢成志胡琳高英伟矫轲张田青高何张英辉彭亏杨黎倪琳娜李铭
Owner BEIJING INST OF SPACECRAFT SYST ENG