Error Analysis and Strategy Optimization of East-West Control for BEIDOU GEO Satellite

摘要

Orbit determination error, thruster calibration coefficient, angular momentum unloading, eccentricity, inclination, etc. are important factors affecting the control amount, prediction after control, holding period and annual control times of the East-West keeping control for BEIDOU GEO satellite. Here, we deduce the common parameters of East-West keeping control; analyse the influence of various factors of the East-West keeping control strategy; establish the prediction model of angular momentum and its influence on the semi-major axis; give the selection strategy of thruster calibration coefficient; give the optimization steps of East-West keeping control strategy. These can improve the accuracy of the East-West keeping control, reduce the times of the East-West keeping control as much as possible, reduce the impact of the control task on the satellite business.