Data transmission antenna tracking control method during satellite attitude maneuvers

Abstract

This invention addresses the problem of tracking and pointing a data transmission antenna to a ground station during satellite attitude maneuvers. It proposes a data transmission antenna tracking control method, comprising: an onboard computer using the current onboard time, onboard control command transmission delay, and the response delay of the data transmission antenna servo system to obtain the actual response time of the data transmission antenna servo system; estimating the satellite orbit at the actual response time based on real-time onboard orbit determination data; estimating the satellite's inertial attitude at the actual response time using an attitude dynamics model based on real-time onboard attitude determination data and control torque commands; obtaining the theoretical rotation angle required for the data transmission antenna to point to the ground station at the actual response time based on ground station position information, satellite orbit, and satellite inertial attitude; and estimating the required rotational angular velocity of the data transmission antenna based on the theoretical rotation angle obtained in step four and the onboard stored data transmission antenna command rotation angle, thereby achieving tracking control of the data transmission antenna.

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