利用X射线脉冲星进行同步定位/授时的可观性分析  

Observability Analysis of Synchronous Location and Timing with X-ray Pulsars

作　　者：孙守明[1] 郑伟[1] 汤国建[1] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙市砚瓦池正街47号410073

出　　处：《武汉大学学报（信息科学版）》2011年第9期1068-1072,共5页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(10973048)

摘　　要：将星载时钟钟差增广为状态向量,根据非线性系统的可观性秩条件判据,从理论上证明了利用X射线脉冲星进行同步定位/授时是可观的,为X射线脉冲星自主导航的工程应用提供了理论依据。In the X-ray pulsars navigation,clock errors are one of the most important factors that influence the navigation and could not be neglected.The clock errors are extended as the state variable based on the observability rank condition of nonlinear system.The system of synchronous location and timing based on X-ray pulsars is proved to be observable,which supplies theoretic proof to the application of navigation based on X-ray pulsars.

关 键 词：脉冲星导航 钟差 授时 可观性 

分 类 号：P228.1[天文地球—大地测量学与测量工程]