X射线脉冲星导航测量延时补偿方法研究  

Research on Measurement Time-Delay Compensation on X-Ray Pulsar-Based Navigation

作　　者：褚永辉[1,2] 王大轶[2] 熊凯[1,2] 黄翔宇[1,2] 

机构地区：[1]北京控制工程研究所,北京100190 [2]空间智能控制技术国家级重点实验室,北京100190

出　　处：《宇航学报》2012年第11期1617-1622,共6页Journal of Astronautics

基　　金：国家863计划(2008AA12A203);基础科研资助项目(A0320080019;B0320110004)

摘　　要：X射线脉冲光子是脉冲星导航系统原始观测量,利用脉冲叠加技术获取的脉冲星观测量存在测量延时问题。通过分析脉冲叠加技术原理,将脉冲星导航系统测量延时问题转化为对光子延迟时间序列的研究。提出基于轨道外推的延时补偿方法和基于组合导航的延时补偿方法,前者计算量小,宜于在测量延时较小时使用,后者不受延时大小的限制。最后通过数学仿真验证了所提方法的有效性。The X-ray pulsar photon is original measurements on X-ray pulsar-based navigation. Time delay exists in the process of assembling all the measured photon events into a pulse profile. Based on the analysis of photon fold principle, the approach is analyzed for time-delay compensation through the use of photon time-delayed TOA. Two methods are proposed for compensation on time-delayed measurement. The first method based on orbit propagate is fit for a short delay time case, and the second method based on integrated navigation is fit for whatever the delay time is. Finally, the schedule is validated by using numeric simulation.

关 键 词：X射线脉冲星 脉冲星导航 测量延时 光学导航 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]