摘要
引入相似椭球的概念,结果推导了双星导航定位系统中与用户高程有关的第三个观测量的精确模型,进而建立了用户的定位算法。仿真结果证明,该算法具有收敛速度快、定位准确的特点。
Double-star navigation position system adopts the mechanism of double-star position, and the basic position principle is three-sphere intersection measurement. Two observations are related to the distances between the two satellites and the survey station, and the third observation is related to the survey station＇s height, which is the critical factor that determines the system＇s position accuracy. Hence, we introduced the concept of similar ellipsoid, and deduced the accurate model of the third observation. Then, we established the position algorithm. The simulating experimental results show that this algorithm has a quick convergence rate and high accuracy of position.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2009年第5期564-567,共4页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(60874112)
山东省泰山学者'建设工程专项经费资助项目
关键词
相似椭球
双星定位
定位算法
用户高程
similar ellipsoid
double-star position
position algorithm
survey station＇s height
