基于X射线脉冲星的地球同步卫星绝对定位方法  

Absolute Position Determination for Geosynchronous Satellite Using X-Ray Pulsars

作　　者：郑广楼[1] 刘建业[1] 乔黎[1] 贺亮 熊智[1] 

机构地区：[1]南京航空航天大学导航研究中心,江苏南京210016 [2]上海航天控制工程研究所,上海200233

出　　处：《上海航天》2009年第1期28-30,60,共4页Aerospace Shanghai

基　　金："863"基金(2006AA704312)

摘　　要：研究了基于X射线脉冲星的航天器绝对定位方法。根据脉冲模型,用相位差分法给出了航天器与地心间的距离,由最小二乘法解算整周模糊度。对绕地卫星为对象的仿真结果表明:在无初始位置信息时可用于确定卫星的绝对位置。该法亦适用于行星际飞行航天器的绝对定位。The scheme of the spacecraft's absolute position determination based on X-ray pulsars was studied in this paper.According to the pulse timing model,the distance between the spacecraft and the earth center was given out by phase difference method,and the cycle ambiguity in the phase difference was solved by least square method.The simulation of some earth satellite showed that the absolute position of the satellite could be determined by this scheme,and this method was also applied in deep space explore.

关 键 词：X射线脉冲星 地球同步卫星 绝对定位 相位差分 整周模糊度 最小二乘法 

分 类 号：V474[航空宇航科学与技术—飞行器设计]