导航卫星自主定轨中光压模型精化方法及其影响研究  

Influence of Solar Radiation Perturbation Model Refinement on Autonomous Orbit Determination of Navigation Satellites

作　　者：张卫星[1,2] 刘万科[1] 龚晓颖[1] 王甫红[1] 

机构地区：[1]武汉大学测绘学院,武汉市珞喻路129号430079 [2]武汉大学卫星导航定位技术研究中心,武汉市珞喻路129号430079

出　　处：《武汉大学学报（信息科学版）》2013年第6期700-704,共5页Geomatics and Information Science of Wuhan University

基　　金：中央高校基本科研经费资助项目(111040);国家863计划资助项目(2009AA12Z301)

摘　　要：以GPS卫星为例,提出了一种太阳光压模型精化方法。该方法能使卫星升交点赤经及轨道倾角在180d内的预报误差控制在±40mas左右,较显著地提高了自主定轨卫星轨道的切向和法向精度,最终改善了用户测距误差,对卫星轨道径向改善不明显,对钟差项几乎没有影响。We proposed a refinement method of solar radiation perturbation model in autono- mous orbit determination of navigation satellites. With this method, the prediction errors of GPS satellites＇ Ω2 and i could be controlled at ＋40 mas level during 180 days. As a result, the tangential and normal direction precision of satellites＇ orbit improved in the autonomous orbit determination when constrained the predictions of Ω2 and i. Finally, user range error became smaller. However, this method has small influences on radial direction of orbit as well as clock bias.

关 键 词：导航卫星 自主定轨 星座整体旋转 太阳光压摄动 光压模型精化 

分 类 号：P228.41[天文地球—大地测量学与测量工程]