GPS三频组合观测量的特征及应用研究

摘要

The equation of GPS double-difference observation model and the error sources which affect the precision of observation are introduced,the general expression of GPS triple frequency carrier phase linear combinations is described and the major factors which limit the accuracy of observations are analyzed,and the model and performance of ionosphere-free combinations are research.In addition,series of typical combination and their possible application are introduced.It is summarized that the application prospect of GPS triple frequency carrier phase linear combinations in such fields,as ionosphere error correct,detection and repair of cycle slip,ambiguity resolution and precise positioning etc.%介绍了GPS载波相位双差观测方程以及误差影响因素,给出GPS三频组合观测量的一般表达式并分析影响组合观测量的主要误差因素,研究了电离层无关线性组合的构建方法及其性能,详细分析几种特殊的线性组合形式及特点,总结了GPS三频组合观测值在电离层误差改正、周跳探测与修复、整周模糊度解算以及精密定位等方面的应用前景。