A 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, which utilizes on-satellite calibration beam forming equipment to realize the generation and beam formation of multi-beam calibration signals; the ground calibration station is located in the multi-beam calibration beam Theoretical pointing center, obtain real-time beam pointing error information by capturing and receiving the calibration signal and measuring the power; the measurement data is transmitted to the control center through the ground link or satellite link; the beam pointing deviation compensation parameters are generated in the control center and sent to the control center To the satellite TT&C station; the satellite TT&C station converts the beam pointing deviation compensation parameters into an up-note instruction and injects it into the satellite platform. This method adopts the method of ground calibration, which can reduce the demand for on-board computing power, simplify the on-orbit calculation process, reduce the measurement error caused by satellite power fluctuations, improve the accuracy of calculation results, and has a clear system structure and a calibration process. The advantages of clear division of labor and positioning, and low computational complexity of the deviation calculation method.

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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