基于广义延拓的GPS精密星历插值方法  

Method of GPS precise ephemeris interpolation based on generalized extended interpolation

作　　者：兰孝奇[1] 李森[1] 段兵兵[1] 

机构地区：[1]河海大学土木工程学院,江苏南京210098

出　　处：《测绘工程》2010年第3期1-3,共3页Engineering of Surveying and Mapping

基　　金：现代工程测量国家测绘局重点实验室开放基金资助项目(ES-SBSM-(06)-01)

摘　　要：在GPS定位中需要计算所需时刻卫星坐标,针对现有的插值法和拟合法的局限性,给出一种分段光滑的数值逼近方法——广义延拓插值。讨论广义延拓插值精度与三参数选取的关系,并与切比雪夫多项式插值结果进行比较分析。Conducting GPS positioning,it is necessary to calculate the satellite coordinates at any time.Considering the limitations of the existing interpolation and fitting method,this paper aims at giving a kind of piecewise smooth numerical-approaching method-generalized extended interpolation.This paper discusses the relationship between generalized extended interpolation precision and the choice of three parameters and uses the Chebyshev polynomial to compare and analyze the interpolation results.

关 键 词：广义延拓插值 切比雪夫多项式 精密星历 

分 类 号：P228.4[天文地球—大地测量学与测量工程]