摘要
针对双星定位系统的定位原理,给出了其定位观测方程,建立了其定位误差模型,推导了在差分定位体制下双星定位系统的定位误差模型;给出了高程误差以及星历误差引起的定位误差模型,并得出星历误差经过差分后等效于一个较小的测距误差的结论。综合仿真实例揭示了双星定位系统的误差分布特征。
According to the positioning principle of double-star position system, firstly, we give the position measurement equations, based on the position error model, at the same time deduce the position error model of double-star position system under the mechanism of difference position. Then, we give the position error model generated by altitude error and ephemeris error. The conclusion shows that the large ephemeris error is equivalent to one minor range error after difference. At last, we simulate synthetically the position error of this system and show the error distributed characteristics of double-star position system.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2009年第9期1110-1112,1129,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)
"泰山学者"建设工程专项经费资助项目
关键词
双星定位
定位误差模型
高程误差
星历误差
误差仿真
double-star position system
position error model
altitude error
ephemeris error
error simulation
