两种GPS精密星历拟合算法的性能比较  

Comparison of the Performance of Two Fitting Methods for GPS Precision Ephemeris

作　　者：崔立鲁 林景泓[1] 安家春 高珊[1] CUI Lilu;LIN Jinghong;AN Jiachun;GAO Shan(School of Architecture and Civil Engineering,Chengdu University,Chengdu Sichuan 610106,China;School of Geodesy and Geomatics,Wuhan University,Wuhan Hubei 430079,China;Chinese Antarctic Center of Surveying and Mapping,Wuhan University,Wuhan Hubei 430079,China)

机构地区：[1]成都大学建筑与土木工程学院,四川成都610106 [2]武汉大学测绘学院,湖北武汉430079 [3]武汉大学中国南极测绘研究中心,湖北武汉430079

出　　处：《北京测绘》2018年第3期266-268,共3页Beijing Surveying and Mapping

基　　金：地球空间环境与大地测量教育部重点实验室测绘基础研究基金(16-01-04)

摘　　要：国际GNSS组织提供了GPS卫星的精密星历、对流层延迟与电离层延迟等产品,而GPS高精度导航定位需要对GPS精密星历进行内插。本文采用拉格朗日和切比雪夫多项式两种拟合方法对IGS提供的GPS精密星历进行插值处理,分析两种方法对于GPS星历插值精度的影响,并改变部分参数,讨论不同参数设置对插值算法的影响并进行实测数据的验证。International GNSS Service provides the GPS satellite precise ephemeris,tropospheric delay,ionospheric delay and other products.The GPS high precision navigation and position need the interpolation of GPS precise ephemeris.GPS precise ephemeris has been calculated by Lagrange’s interpolation and Chebyshev polynomia method in this paper,and the influence of this two methods for ephemeris interpolation accuracy has been analyzed.Under the change of part parameters,it discuss that the influence of different parameter settings for interpolation algorithm by mean of the measured data calculated.

关 键 词：国际GNSS组织 精密星历 拉格朗日 切比雪夫 

分 类 号：P228[天文地球—大地测量学与测量工程]