广播星历与精密星历切比雪夫插值的比较  

Comparison of Chebyshev interpolation with broadcast and precise ephemeris

作　　者：杨永林[1] 苟长龙[1] 胡波[1] 

机构地区：[1]机械工业勘察设计研究院,陕西西安710043

出　　处：《测绘工程》2010年第2期10-12,共3页Engineering of Surveying and Mapping

摘　　要：在GPS数据处理后,用户需根据广播星历或者精密星历选择合理的插值方法解算任意观测时刻的卫星位置,从而得到目标物的空间位置。文中介绍拉格朗日和切比雪夫插值的基本原理,对精密星历进行切比雪夫多项式插值,并与同时段广播星历的拉格朗日插值进行比较分析,并得出一系列有益的结论。In post processing of GPS data,the clients solve out the coordinates of satellite at any time according to the broadcast or precise ephemeris and choose proper interpolation methods in order to get the positions of the objects.We simply describe the basic principles of Lagrange and Chebyshev multinomial interpolation;then we use Chebyshev multinomial in precise ephemeris and compare to the Lagrange multinomial of broadcast ephemeris at the same interval;and then we draw significant conclusions.

关 键 词：精密星历 广播星历 拉格朗日多项式 切比雪夫多项式 

分 类 号：P228.4[天文地球—大地测量学与测量工程]