地球同步卫星漂移率和偏心率单脉冲联合控制策略

Single Impulse Option Strategies for Longitude Drift Rate and Eccentricity Vector Corrections

在分析地球同步卫星漂移率和偏心率控制原理的基础上,提出了应用太阳同步偏心率控制模式,对经度漂移率和偏心率进行单脉冲联合控制的策略。该策略通过缩小漂移环半宽和偏心率保持圆半径的方法构建轨道修正模型,使得在太阳同步偏心率控制模式下,漂移率和偏心率控制所需速度增量相等且两者位保周期相同。数学模型和仿真结果表明,应用该策略进行东西位保,全年所需速度增量等于漂移率控制所需速度增量且轨控时刻固定,可以使漂移率和偏心率都达到精度要求。

This paper proposes a combined single impulse control strategy for longitude drift rate and eccentricity using sun-synchronous eccentricity control mode based on analysis of the theory for control of the longitude drift rate and eccentricity of geostationary satellites.The strategy establishes orbit correction models by maintaining radius through reduction of the semi-width of mean longitude box and eccentricity so that the correction increment of velocity for longitude drift rate is equal to that for eccentricity vector and the two have identical station-keeping control cycle.Simulation results show that the increment of velocity used to perform E/W station keeping is equal to that of longitude drift control in one year.Moreover,E/W maneuver epoch is not changed.The strategy maintains longitude drift rate and eccentricity vector well within the permitted circle.