A New Restoration Algorithm for the Smeared Image of a SINS-aided Star Sensor

被引：9
|
作者：
Wang, Kedong [1 ]
Zhang, Chao [1 ]
Li, Yong [2 ]
Kan, Xin [3 ]
机构：
[1] Beihang Univ, Beijing 100191, Peoples R China
[2] Univ New S Wales, Sydney, NSW 2052, Australia
[3] Harbin Inst Technol, Harbin 15001, Peoples R China
来源：
JOURNAL OF NAVIGATION | 2014年 / 67卷 / 05期
关键词：
Star sensor; Celestial navigation system; Image smearing; Image restoration;
D O I：
10.1017/S0373463314000277
中图分类号：
U6 [水路运输]; P75 [海洋工程];
学科分类号：
0814 ; 081505 ; 0824 ; 082401 ;
摘要：
The accuracy of attitude determination using a star sensor tends to be degraded if the host vehicle's manoeuvring smears the star image. In this paper, a new restoration algorithm with the aid of a Strap-down Inertial Navigation System (SINS) is proposed to reduce the effect of the smeared image. The smeared trace length is estimated with aid of the SINS angular rate. The restoration algorithm based on a Wiener filter is designed after the smeared zone is derived with the aid of the SINS coarse attitude. A tracking method is proposed to reject the stars of low centroid extraction accuracy. Simulations demonstrate that the success rate and the accuracy of attitude determination are improved significantly by the restoration algorithm even under a very fast rotation. The impact of the SINS error on the restoration is evaluated in the simulations.
引用
收藏
页码：881 / 898
页数：18
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