X射线脉冲星/SINS组合导航中的钟差修正方法研究  

A New Clock Error Control Algorithm of X-Ray Pulsars/SINS Integrated Navigation

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,湖南长沙410073

出　　处：《国防科技大学学报》2010年第6期82-86,共5页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(10973048)

摘　　要：X射线脉冲星/SINS组合导航是提高脉冲星导航通用性的有效手段和未来工程应用的可行方案之一,但当星载时钟存在钟差漂移时,该组合导航系统在长航时不能保证导航精度。为此,本文提出一种X射线脉冲星/SINS组合导航系统的钟差修正方法,通过将钟差增广为组合导航系统的状态变量有效解决了因星载时钟钟差漂移引起的导航精度下降问题,为X射线脉冲星导航的工程应用奠定了理论基础。X-Ray pulsars/SINS integrated navigation is one of the effective means to extend the application scope of pulsars navigation,and it is also a feasible project of the application of pulsars navigation in the future.When the clock error drifts with time,the Pulsars/SINS Integrated Navigation will be affected.In this paper,the clock error is extended as the state variable,thus a new clock error control algorithm of X-Ray pulsars/SINS integrated navigation is proposed.Results show that the new algorithm can well control the clock error and guarantee the navigation precision of pulsars/SINS integrated navigation,so the new algorithm is referable to the application of navigation based on X-Ray pulsars.

关 键 词：脉冲星导航 捷联惯导 组合导航 钟差 

分 类 号：V249.3[航空宇航科学与技术—飞行器设计]