摘要
本文基于伪距和GRAPHIC组合观测量实现了单频精密单点定位算法，探讨了单频精密单点定位需要考虑的改正模型，重点分析了DCB改正和电离层延迟改正问题。基于15个IGS观测站16天观测数据的静态定位实验，结果表明：ENU方向的RMS分别为0．019m、0．009m和0．057m。
An algorithm combining pseudorange and GRAPHIC observation for GPS single -frequency precise point positioning has been realized. Correction models required by GPS single - frequency precise point positioning are discussed and great emphasis is placed on the analysis of differential code bias （DCB） correction and ionospheric delay correction. Static positioning experiment data collected from 15 International GNSS Service （IGS）observation stations over 16 days shows that RMS in the direction of ENU are 0. 019m,0. 009m and 0. 057m respectively.
出处
《测绘科学与工程》
2012年第1期34-37,共4页
Geomatics Science and Engineering
关键词
GPS
单频精密单点定位
静态定位
精度分析
GPS
single - frequency precise point positioning
static positioning
accuracy analysis
