IGS精密星历内插方法研究  

Research on the Interpolation Method of Precise Ephemeris

作　　者：高明超 徐泮林[1] 谷彦斐 GAO Mingchao;XU Panlin;GU Yanfei(Institute of Surveying Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]山东科技大学测绘科学与工程学院,山东青岛266590

出　　处：《测绘与空间地理信息》2020年第8期110-112,115,共4页Geomatics & Spatial Information Technology

摘　　要：使用IGS所给出的卫星精密星历作为实验数据,使用拉格朗日多项式插值法、牛顿多项式插值法和Neville逐次线性插值法进行实验,分析每种方法分别在哪几阶计算的时候,精度最高。通过实验分析,分别给出拉格朗日多项式插值法、牛顿多项式插值法和Neville逐次线性插值法的最佳计算阶数。Taking the satellite precise ephemeris given by IGS as experimental data,we carry out an experiment to analyze the highest accuracy at different calculation orders of each method including Lagrangian polynomial interpolation,Newton polynomial interpolation,and Neville successive linear interpolation.Through experimental analysis,the optimal calculation order of Lagrangian polynomial interpolation method,Newton polynomial interpolation method,and Neville successive linear interpolation method are given,respectively.

关 键 词：精密星历 瞬时位置 插值方法 精度 

分 类 号：P228[天文地球—大地测量学与测量工程]