一种新的GPS星座选择算法  

A New Method of Selecting GPS Satellites

作　　者：卓宁[1] 

机构地区：[1]92941部队

出　　处：《宇航计测技术》2009年第2期54-56,共3页Journal of Astronautic Metrology and Measurement

摘　　要：在分析星座高度角和方位角对GPS定位误差影响的基础上,提出了一种新的最佳选星算法。理论分析和仿真结果表明:采用该方法选星作导航定位计算的误差和速度均优于以搜索4颗卫星组合的最小几何误差因子为计算准则的常规选星方法,且具有简单实用、工程易实现等优点,具有较强的适应性。A new method of selecting GPS satellites is presented, based on the influence of altitude angle and azimuth angle for the prediction of the GPS constellation. The theoretical analysis and simulation show that the error and velocity of positioning computation are better by using the method than the general method of selecting GPS satellites which searches the minimum geometric error by four satellites combination. The method is simple and practical, and is easy to realize in project. It provides better applicability.

关 键 词：GPS 姿态角 方位角 几何误差 位置误差 

分 类 号：TM930[电气工程—电力电子与电力传动]