精密点定位的基本原理和应用

Principle and Application of Precise Point Position

详细给出精密点定位的观测方程、改正模型、平差模型和算例,根据计算模型建立了计算系统和设计了软件,利用同济大学GPS基准站的观测数据,给出了计算结果.当仅考虑地球自转改正、卫星的天线相位中心偏差改正、相对论改正等影响时,静态解与已知坐标的差异小于12 cm,均方根(RMS)小于5 cm.

Presented in this paper are the Precise models, adjustment models and a case study;then Point Positioning observation equations, correction the computing system and software are established. The observation data sets are selected from Tongji University GPS base station, and numerical results are presented. When only taken into consideration the earth rotation correction, the satellite antenna phase center offset and satellite orientation as well as relativity corrections, the static solution disagree to known coordinates with in 12 cm. The RMS is less than 5 cm.