摘要
为解决双卫星组合导航系统定位精度与计算负担之间的矛盾,采用选星的改进措施,文中分析了双星座系统与单星座系统的区别,提出了常用的几种选取5颗星的方法,并分别进行仿真分析,总结出各自的优缺点。同时根据观测矩阵与GDOP值的关系提出选取大于5颗可见星的最大行列式绝对值法,并分别对选取6、7颗可见星进行仿真分析,由仿真结果可见此法的实用性。
To resolve the conflict between positioning accuracy and the computational burden when using double satellite combined navigation system, the satellite selection algorithm should be improved. Besides analyzing the differences between single constellation system and combined constellation system, several ways of five satellites were proposed, and their characteristics were analyzed through simulation. Besides, a method of the largest absolute value was proposed for selecting more than five satellites based on the relationship between matrix and GDOP, and the simulation result of six and seven visible satellites proves feasibility of the method.
出处
《弹箭与制导学报》
CSCD
北大核心
2009年第4期13-15,24,共4页
Journal of Projectiles,Rockets,Missiles and Guidance
基金
民航863计划项目资助
