光压摄动对卫星姿态轨道耦合的影响分析  

Analysis of Solar Pressure Perturbation Impacting on Satellite Attitude-orbit Coupling

作　　者：崔文[1,2] 王家松 宝音贺西[1] 

机构地区：[1]清华大学航天航空学院,北京100084 [2]宇航动力学国家重点实验室,西安710043

出　　处：《空间科学学报》2012年第3期424-429,共6页Chinese Journal of Space Science

基　　金：国家自然科学基金项目资助(10832004)

摘　　要：随着卫星对地测量精度要求的不断提高,对卫星轨道的精度要求也随之提高.目前Topex,Jason-1,Jason-2等一系列海洋测地卫星的轨道计算精度已经达到厘米量级,相应对卫星动力学模型的要求也越来越精细.以Topex海洋测地卫星为背景,考虑卫星帆板有规律的运动,将其几何形状简化为高精度轨道计算中比较通用的Boxing-Wing模型,计算了Topex卫星的Boxing-Wing模型在轨运行中受到的太阳光压力及光压力矩.考虑卫星姿态和轨道耦合的情况下,计算了太阳光压力及光压力矩对Topex卫星轨道半长轴和卫星姿态的影响.通过一个轨道周期的计算可知,光压对卫星轨道半长轴的影响大约为9 cm,对卫星滚动角和俯仰角的影响在6°左右,因此,在高精度的轨道计算和姿态控制中这个影响是应该考虑的.With the increasing precision of satellite geodesy,the precision of satellite orbit determination should be improved correspondingly.Currently,the orbit accuracy of Topex,Jason-1,Jason-2 and a series of marine geodetic satellites has already reached a centimeter level.Thus,the satellite dynamics model should also be further improved.Considering the solar array with regular rotation, simplifying the geometry of satellite as Boxing-Wing model which is common in high-precision orbit determination,the solar radiation pressure and moment of Topex satellite are calculated in orbit. Considering the situation of satellite attitude-orbit coupling,the changing of orbital semi-major axis and the satellite attitude caused by the solar pressure perturbation are analyzed.During the calculation of one orbital period,the effect by solar pressure for orbital semi-major axis is about 9 cm,and for roll angle and pitch angle both are about 6 degrees,which should not be ignored in high-precision orbit calculations and attitude control.

关 键 词：太阳光压 姿轨耦合 Boxing-Wing模型 

分 类 号：V448.22[航空宇航科学与技术—飞行器设计]