天地一体自主导航系统卫星广播星历参数拟合  

The Broadcast Ephemeris Parameters Fitting for the Integrated Autonomous Navigation System of Space and Land

作　　者：陈刘成[1,2] 徐波[1] 

机构地区：[1]南京大学天文与空间科学学院,南京210016 [2]北京卫星导航工程中心,北京100094

出　　处：《导航定位学报》2016年第1期94-97,共4页Journal of Navigation and Positioning

基　　金：国家自然科学基金(41274043;41174026)

摘　　要：本文针对现役卫星导航系统广播星历拟合及用户计算算法不能适用未来天地一体自主卫星导航系统的问题,提出利用切比雪夫多项式统一拟合多类型卫星轨道广播星历。利用BDS实际精密轨道数据和仿真拉格朗日平动点轨道数据试验表明,切比雪夫多项式星历拟合算法稳定可靠,灵活可控,计算量少,适用于所有类型导航卫星星载自主拟合。To solve the problem that the ephemeris parameters fitting arithmetic of operational satellite navigations aren＇t applicable for the integrated autonomous navigation system of space and land in the future,especially for the geostationary orbits and the Lagrange libration point orbits,the Chebyshev polynomial fitting algorithm is proposed to unify the multi-types satellites ephemeris parameters fitting.The fitting results,based on the operational COMPASS system satellite precise orbits and stimulated earth-moon system Lagrange libration point orbits,demonstrate that the Chebyshev polynomial is stable and reliable,flexible and controllable,with less calculation,and it is adapted to all-type satellite autonomous fitting onboard as well.

关 键 词：卫星导航 拉格朗日平动点 广播星历 切比雪夫多项式 

分 类 号：P228[天文地球—大地测量学与测量工程]