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

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...

AI Technical Summary

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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