Remote sensing satellite variable code modulation function test 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: 2020-10-27
BEIJING INST OF SPACECRAFT SYST ENG
View PDF12 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
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
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[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;
...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a remote sensing satellite variable code modulation function test method and system, and the method comprises the steps: building a channel transmission model of a remote sensing satellite, simulating the transmission of a variable code modulation signal transmitted by the remote sensing satellite according to the channel transmission model to obtain a first variable code modulation signal; determining a change rule of the channel error rate along with the signal-to-noise ratio according to the initial attenuation value and the initial signal-to-noise ratio of the channel transmission model and the first variable coded modulation signal, and comparing the change rule with a preset expected change rule to obtain a first comparison result; receiving on-orbit operationstate information sent by the remote sensing satellite, and simulating and generating a second variable code modulation signal according to the on-orbit operation state information, comparing the variable code modulation signal sent by the remote sensing satellite with the second variable code modulation signal to obtain a second comparison result, and generating a test report according to the first comparison result and the second comparison result. According to the invention, the technical problems of poor test effect and efficiency in the prior art are solved.
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...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More 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
OwnerBEIJING INST OF SPACECRAFT SYST ENG