GPS中一种选星方法及实验分析  

Method of selecting GPS satellites and its test analysis

作　　者：袁社旺[1] 卓宁[1] 

机构地区：[1]中国人民解放军92941部队

出　　处：《中国惯性技术学报》2008年第4期445-447,共3页Journal of Chinese Inertial Technology

摘　　要：在分析已有选星方法的基础上,提出了一种可变加权的综合几何精度因子选星算法。理论分析和实验结果表明:采用该方法选星进行导航定位计算的精度和速度均优于以搜索4颗卫星组合的最小几何精度因子为计算准则的常规选星方法,且具有简单实用、工程易实现的优点,具有较强的适应性。Based on the existing methods of selecting GPS satellites, the method of selecting GPS satellites using integrated geometric dilution of precision（GDOP） with alterable weight was presented. The theoretical analysis and simulation show that the accuracy and velocity of positioning calculation using this method are better than those of general methods which search the minimum geometric dilution of precision among combined four satellites. The method is simple, adaptable, and practical, and is easy for engineering implementation.

关 键 词：GPS 加权 综合几何精度因子 定位误差 

分 类 号：U666.1[交通运输工程—船舶及航道工程]