一种新的“北斗二代”的选星方法  

A new satellite selection of COMPASS

作　　者：赵彦青[1] 席志红[1] 李家森 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,哈尔滨150001

出　　处：《仪器仪表用户》2012年第6期74-76,共3页Instrumentation

摘　　要：北斗二代"卫星导航定位系统是我国自主研制的新一代卫星导航系统。本文通过STK分析北斗二代"卫星导航系统的现有星座的覆盖范围,得出特定地区在不同时刻对所有卫星的可见性报告,综合可见星的情况和对现有选星方法的分析提出合理快速的选星方法,使用新提出的算法确定定位星座;通过仿真新算法的实现过程及所确定的星座的几何精度因子表明算法的合理性,之后采用该星座进行定位。仿真定位精度表明该算法的正确性,说明该选星方法简洁快速,有效降低了导航定位算法的复杂性,是一种合理的选星方法。COMPASS is a new-generation satellite navigation and positioning system independently developed by China. This essay establishes the constellation model of COMPASS on the basis of STK,analyses the existing coverage. Based on the analysis of relationship between the geometric dilution of precision（GDOP） and the geometry layout of constellation,a new fast satellite selection method is proposed.Simulation results show that this method is simple and rapid,and will effectively reduce the complexity of the algorithm of positioning,at the same time,the GDOP obtained by this method can meet the demand of navigation and positioning.

关 键 词：北斗二代 选星方法 几何精度因子 定位精度 

分 类 号：TM344.1[电气工程—电机]