COMPASS伪距单点定位精度分析  

ANALYSIS OF PSEUDORANGE POINT POSITIONING ACCURACY OF COMPASS

作　　者：李林红[1] 何秀凤[1] 张化疑[2] 

机构地区：[1]河海大学卫星及空间信息应用研究所,南京210098 [2]国家海洋局第一海洋研究所,青岛266061

出　　处：《大地测量与地球动力学》2013年第2期58-62,共5页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(40974001);国家海洋局青年基金(2011426)

摘　　要：通过实测COMPASS数据处理,分析COMPASS伪距观测值精度与卫星高度角的关系,以及当前4GEO+5IGSO导航星座COMPASS伪距单点定位的精度。结果表明,COMPASS伪距多路径效应和观测噪声在0～3 m之间变化,其精度为0.3～0.7 m;卫星高度角越大,多路径效应和观测噪声越小;GEO卫星受到的多路径效应和观测噪声要明显小于IGSO卫星;COMPASS伪距单点定位精度(RMS)在N、E、U方向上分别为3.33、3.45、8.84m。The relations between the accuracy of COMPASS pseudorange observations and elevation angles of satellite are studied, and the pseudorange point positioning accuracy of the constellation which contains 4 Geostationary Orbit（GEO） satellites and 5 Inclined Geo-synchronization Orbit （IGSO）satellites is analyzed. The results demonstrate multi-path effects of COMPASS pseudorange and observation noise are about 0 - 3 m, and their accura- cies are about 0.3 - 0.7 m. At the higher elevation angles, multi-path effects and observation noise are the smaller, and both of the multi-path effects and observation noise on all GEO satellites are smaller than those on IGSO satellites. The COMPASS pseudorange point positioning accuracy （RMS）in the N, E and U directions are about 3.33, 3.45 and 8.84 m, respectively.

关 键 词：COMPASS 伪距观测量 伪距质量 伪距单点定位 卫星高度角 

分 类 号：P207[天文地球—测绘科学与技术]