基于伪距、伪距率的GPS/SINS容错组合导航系统  

GPS/SINS Fault Tolerant Integrated Navigation System Based on Pseudo-range and Its' Rate

作　　者：杨静 张洪钺[2] 朱士青 

机构地区：[1]上海机电工程研究所,上海200233 [2]北京航空航天大学自动化学院,北京100083

出　　处：《航天控制》2003年第3期17-25,共9页Aerospace Control

摘　　要：为了提高组合导航系统的容错性和可靠性 ,本文采用基于伪距、伪距率的GPS/SINS组合导航系统 ,详细推导了该组合导航系统的模型 ,并通过仿真验证了当有效定位卫星数目小于四颗时 ,该组合方法仍可以利用GPS信息修正SINS的导航误差 ,满足一定的导航精度需求。并通过可观性分析 。In this paper, integrated navigation system based on pseudo-range and its' rate is used to improve the fault tolerant ability and reliability. The integrated navigation system model is derived in detail. If the number of satellites visible is less than 4, it is validated by simulation that GPS can be still used in integrated navigation system with certain navigation precision. The effect of the number of satellites visible to navigation precision is explained by observability analysis.

关 键 词：组合导航系统 GPS SINS 伪距 伪距率 导航精度 全球定位系统 捷联惯性导航系统 

分 类 号：V249.32[航空宇航科学与技术—飞行器设计]