基于GPS和GLONASS组合单点定位

Study on Single-Point Positioning based on GPS Combined with GLONASS

GLONASS和GPS是独立的两大卫星定位系统,在定位方面,既有其优点也有其缺憾。本文在GLONASS伪距单点定位和GPS伪距单点定位的基础上,对GPS/GLONASS组合单点定位给定合理的观测值权比,以Helmert方差分量估计的定权方法进行研究。观测数据选取从ICG跟踪站获得,对观测数据使用三种方式进行单点定位,根据计算结果,分析得出不同权重选择对组合定位精度的影响。

GLONASS and GPS are two independcnt satellite positioning systems. In terms of positioning, both have their advantages and shortcomings. In this paper, based on GLONASS pseudorange single point positioning and GPS pseudor ange single-point positioning, Using Helmert variance component estimation method of weighting to give a reasonable weight ratio for single point positioning of GPS/GLONASS combination. Observation data from ICG tracking station as an example, using GPS, GLONASS and GPS/GLONASS combination of three ways to pseudorange method of single point positioning, and comparative analysis of the different weight the effect of choice on the positioning accuracy.