GPS多频相位组合观测值的定位精度分析  

Analysis of GPS Multi-Frequency Carrier Phase Combinations

作　　者：伍岳[1] 郭金来[2] 孟央[2] 孙伟[2] 

机构地区：[1]三峡大学三峡库区地质灾害教育部重点实验室 [2]武汉大学测绘学院,武汉市珞喻路129号430079

出　　处：《武汉大学学报（信息科学版）》2006年第12期1082-1085,共4页Geomatics and Information Science of Wuhan University

基　　金：国家国土资源部资助项目(国地防灾[2003]031709)

摘　　要：在单一组合进行高精度定位中,为提高其定位精度,提出了一种获得新的线性组合的方法,并对该组合进行了实例求解与验证。结果表明,该方法绕开了对电离层误差的多频改正,算法简单,精度较优,可应用到不同精度要求下的中长距离快速定位中。Starting from the variance covariance of multi-frequency carrier phase combination＇s equation, every observation error expression is deduced one by one via the propagation of errors, and the impact of positioning precision with the changing of observation error analyzed. Using only one carrier phase combination to high precision positioning, a method to get the optimal combination is put forward. The result indicates that this method＇s arithmetic is simple and the precision is excellent, so it can beused for long baseline quick positioning for different precision request.

关 键 词：GPS 多频相位组合 误差传播定律 

分 类 号：P228.41[天文地球—大地测量学与测量工程]