基于阶次组合的GPS精密星历插值研究  

RESEARCH ON GPS PRECISE EPHEMERIS INTERPOLATION BASED ON HIGH/LOW ORDERS INTEGRATED

作　　者：王晓明[1] 成英燕[1] 刘立[1] 

机构地区：[1]中国测绘科学研究院,北京100039

出　　处：《大地测量与地球动力学》2011年第4期103-106,共4页Journal of Geodesy and Geodynamics

基　　金：国家基础测绘项目(B2551)

摘　　要：采用Lagrange插值与线性逐次Neville插值两种方法对GPS卫星轨道进行了插值,比较了两种方法的特性及插值精度,结果表明两种方法虽然简单易实现,但当进行高阶插值时,边缘插值区间的精度较低。为解决该问题提出利用高次插值与低次插值相结合的方法进行轨道插值,算例证明,该插值方法可以改善插值精度。Both the characteristics of other tions. It is concluded from the results that Finally, a new interpolation method Lagrange interpolation and Neville interpolation are compared with each the high-order interpolation is not good enough for high-precise applica- which based on high/low orders to solve this problem is put forth.

关 键 词：GPS 精密星历 LAGRANGE插值 Neville插值 不同阶次 

分 类 号：P207[天文地球—测绘科学与技术]