摘要
本文利用地球非球形引力、日月第三体引力摄动分析解理论综合分析了导航卫星广播星历参数设计的物理意义,从理论上确定了其取值范围.并通过"共振"效应的综合分析,对GPS开普勒广播星历参数对IGSO、GEO卫星的适用性进行了深入研究,最后通过理论分析指出小倾角、J2,2项共振等因素是引起上述广播星历算法不适用于GEO卫星的主要原因.针对GEO卫星星历参数拟合法方程严重病态以及部分接口参数超限的问题,提出了动态加权的带参数约束条件平差算法.通过实际算例证明,该方法能有效稳定星历拟合结果,解决Δn等星历参数超限的问题.
The physical definition of navigation satellite broadcast ephemeris parameters are analyzed by the non-spherical gravitational potential and the third body perturbation theory, and their theoretic bounds are concluded. The resonance affection on high orbit navigation satellite is synthetically analyzed, which disturbed the applicability of the Kepler ephemeris fitting arithmetic on GEO, and the i≈0 and J2,2 factors mainly cause the inapplicability. To solve the former problems, an arithmetic named constraints adjustment with parameters dynamic weighting is advanced, which is proved to be effective to stabilize the ephemeris parameters fitting results or to limit all parameters such as Δn within the bounds of the interface.
出处
《中国科学：物理学、力学、天文学》
CSCD
北大核心
2010年第5期608-615,共8页
Scientia Sinica Physica,Mechanica & Astronomica
基金
国家高技术研究发展计划(编号:2007AA12Z345
2009AA12Z328)
中国博士后科学基金(编号:20080440092
200902259)
地球空间环境与大地测量教育部重点实验室开放基金资助课题(编号:06-07
08-01-07)资助项目
关键词
广播星历
共振摄动
动态加权
条件平差
条件数
the broadcast ephemeris parameter
the resonance perturbation
dynamic weighting
adjustment with constraints
condition number
