Method for planning attitude maneuver in imaging process of agile satellite

Abstract

The invention discloses a method for planning attitude maneuver in the imaging process of an agile satellite. The method comprises the following steps: firstly, calculating an imaging point position corresponding to each time point according to starting and ending geographic positions of a designated ground imaging strip and imaging time corresponding to two endpoints; secondly, calculating a relative position vector of the satellite and imaging points in a geocentric equatorial inertial coordinate system according to orbital parameters of the satellite and the imaging point positions of corresponding moments; thirdly, calculating a component of the relative position vector in a satellite body coordinate system according to a series of conversion matrixes from the geocentric equatorial inertial coordinate system to a satellite orbital coordinate system; fourthly, calculating a roll angle, a pitch angle, a roll angle speed and a pitch angle speed during satellite imaging according to the component of the relative position vector in the satellite orbital coordinate system; finally, calculating a yaw angle and a yaw angle speed of the satellite according to the roll angle, the roll angle speed, the pitch angle and the pitch angle speed which are obtained, the orbital parameters and the corresponding imaging point positions to obtain the planned attitude information of the satellite in the imaging process.

Description

technical field [0001] The invention relates to an attitude maneuver planning algorithm suitable for low-orbit remote sensing satellites with agile attitude maneuver capability in the ground imaging process, in particular to an attitude maneuver planning method in the agile satellite imaging process. Background technique [0002] With the continuous development of remote sensing satellites, remote sensing satellites continue to enrich their own functions and improve their performance. Among them, the agile and mobile imaging capability is currently a technology that is more concerned. The agile maneuvering imaging capability mainly refers to the ability of the satellite platform to have a wide range of rapid attitude maneuvering, and to implement flexible earth observation within the limits of the maximum attitude angle and attitude maneuvering speed, so as to achieve rapid response to the observation target and multiple modes of observation. imaging capabilities. In additi...

AI Technical Summary

Problems solved by technology

The ensuing problem is that in the face of various complex imaging situations, if the method of injecting instructions and related information on the ground before the imaging task is still used, the workload of the ground system will be increased, and the amount of injection required for attitude maneuver imaging The command content is complex and the data volume is large

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