Impact of Ephemeris Errors on X-ray Pulsar Navigation

被引：0
|
作者：
Xu, Q. [1 ]
Wang, H. L. [1 ]
You, S. H. [1 ]
He, Y. Y. [1 ]
Feng, L. [1 ]
机构：
[1] Xian Res Inst High Technol, Control Lab, Xian 710025, Peoples R China
来源：
2018 IEEE CSAA GUIDANCE, NAVIGATION AND CONTROL CONFERENCE (CGNCC) | 2018年
关键词：
D O I：
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中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Based on the basic principle of X-ray pulsar navigation, this paper studies the impact of ephemeris errors of different celestial bodies on X-ray pulsar navigation. The impact of ephemeris errors on X-ray pulsar navigation mainly refers to the impact of ephemeris errors of pulsars and the earth on navigation results. Firstly, the principle and mathematical model of X-ray pulsar navigation are introduced in detail. Secondly, the impact of two ephemeris errors on the navigation is further analyzed, and the error transfer functions are derived through the formula. Finally, Using unscented Kalman filter (UKF) simulation experiments shows that: the ephemeris error of pulsars and the earth approximate a linear relationship with the change of the navigation error; the ephemeris errors have a significant effect on the position estimation result and has little impact on the velocity; In X-ray pulsar navigation, systematic error caused by the ephemeris error of the earth is more significant than the pulsars'.
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页数：6
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