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Satellite-ground integrated high-precision satellite multi-beam calibration method

A multi-beam, high-precision technology, applied in the field of satellite measurement and control, can solve problems such as rolling attitude, pitching attitude and yaw attitude deviation, satellite beam drift, and affecting the quality of satellite-ground communication links, so as to reduce measurement errors and complicate calculations The effect of low accuracy and ensuring the quality of satellite-to-earth communication

Active Publication Date: 2021-01-08
军事科学院系统工程研究院网络信息研究所
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Problems solved by technology

[0002] During the in-orbit operation of a high-orbit satellite (GEO), affected by factors such as the uneven gravitational field of the earth and the change of solar radiation pressure, there will be deviations in roll attitude, pitch attitude, and yaw attitude, which will lead to the drift of the satellite beam pointing, affecting Satellite-to-ground communication link quality

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] The invention discloses a satellite-ground integrated high-precision satellite multi-beam calibration method, which is realized by using on-satellite calibration beamforming equipment, ground calibration stations, control centers and satellite measurement and control stations, wherein the on-satellite calibration beamforming The equipment is used to generate multi-beam calibration signals containing satellite attitude on the orbit and send them to the ground calibration station. The position error between the power overlapping point of the multi-beam calibration signal and the ground calibration station is used to calculate the deviation of satellite attitude. So as to achieve the purpose of satellite-ground integrated calibration; the ground calibration station is used to receive the calibration signal generated on the satellite, and measure the beam pointing ...

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Abstract

The invention discloses a satellite-ground integrated high-precision satellite multi-beam calibration method. On-satellite calibration beam forming equipment is used for achieving multi-beam calibration signal generation and beam forming. A ground calibration station is located at the theoretical pointing center of a multi-beam calibration beam, and real-time beam pointing error information is obtained by capturing and receiving calibration signals and measuring power. Measured data are transmitted to the control center through a ground link or a satellite link; wave beam pointing deviation compensation parameters are generated in the control center and sent to the satellite measurement and control station; and the satellite measurement and control station converts the beam pointing deviation compensation parameter into an upload instruction and injects the upload instruction into the satellite platform. According to the method, a ground calibration mode is adopted, the requirement foron-satellite operational capability can be reduced, an on-orbit operation processing flow is simplified, measurement errors caused by satellite power fluctuation are reduced, the precision of a calculation result is improved, and the method has the advantages that the system structure is clear, the calibration process is clear in division of work and positioning, and the operation complexity of adeviation calculation method is low.

Description

technical field [0001] The invention belongs to the technical field of satellite measurement and control, and relates to a satellite-ground integrated high-precision satellite multi-beam calibration method. Background technique [0002] During the in-orbit operation of a high-orbit satellite (GEO), affected by factors such as the uneven gravitational field of the earth and the change of solar radiation pressure, there will be deviations in roll attitude, pitch attitude, and yaw attitude, which will lead to the drift of the satellite beam pointing, affecting The quality of the satellite-to-ground communication link. In order to reduce the pointing deviation caused by beam drift and reduce the pointing mismatch loss of the communication link, it is necessary to use the beam calibration system to adjust the satellite attitude to improve the beam pointing accuracy. The beam calibration system involves multiple node elements such as satellites, ground calibration stations, contr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G1/24
CPCB64G1/244B64G1/245
Inventor 何元智章劲松
Owner 军事科学院系统工程研究院网络信息研究所
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