GPS/BeiDou组合单点定位的定权与结果分析  

Weight Determination and Accuracy Analysis of Combined GPS/BeiDou Single Point Positioning

作　　者：潘林[1] 蔡昌盛[1] 戴吾蛟[1] 高晓[1] 

机构地区：[1]中南大学测绘与遥感科学系,湖南长沙410083

出　　处：《全球定位系统》2013年第6期12-16,共5页Gnss World of China

基　　金：国家自然科学基金(批准号:41004011)

摘　　要：利用Helmert方差分量估计方法为GPS/BeiDou组合单点定位不同系统观测值定权,获得了合理的权值。分析了开阔环境和遮挡环境两种情况下的动态GPS/BeiDou组合单点定位的精度。结果表明:在静态观测和动态观测中,组合单点定位与单独GPS单点定位相比精度有显著提高。The Variance Component Estimation （VCE） method is used to determine the weight of observations from different satellite systems in the combined GPS/BeiDou single point positioning （SPP） .A proper observation weight ratio between GPS and BeiDou pseud-orange measurements is acquired .The positioning accuracy of combined GPS/BeiDou SPP is analyzed using both static data and kinematic data collected under open sky and blocked envi-ronment .The results indicate that the combined GPS/BeiDou SPP can significantly improve the positioning accuracy for both the static and kinematic tests over GPS-only SPP .

关 键 词：GPS BEIDOU HELMERT方差分量估计 单点定位 定位精度 

分 类 号：P228.4[天文地球—大地测量学与测量工程]