Fast celestial positioning for space objects based on star identification

	Fast celestial positioning for space objects based on star identification
	Zhang L.; He X.; Wei Z.-H.; Guo J.-M.
	2014
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ISSN	ISBN/1004924X
卷号	22 期号:11 页码:3074-3080
摘要	A fast celestial positioning method based on star identification was proposed to improve positioning accuracy and reduce positioning time. Firstly, the photographic time and angular values were acquired, and the pointing direction of boresight in geocentric inertial coordinate system was calculated by transforming a horizontal coordinate system into a geocentric inertial coordinate system with an astronomical triangle model. Then, all navigation stars and patterns in the area that the boresight pointed were extracted, and the corresponding relationship between stars in images and in the sky was established by a region star match. Finally, the celestial positioning for a space object was completed relatively by reference stars in a background according to pinhole imaging model. The experiment for an image with a FOV of 44and a resolution of 1 0241 024 shows that the course of the positioning for the space object has been greatly accelerated due to the introduction of astronomical triangle model and region star match, and the positioning speed is approximately 400 ms. On the other hand, the positing accuracy of a space target is better than 2 because the relative positioning method eliminates a lot of factors effecting the accuracy.
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/43992
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhang L.,He X.,Wei Z.-H.,et al. Fast celestial positioning for space objects based on star identification[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2014,22(11):3074-3080.
APA	Zhang L.,He X.,Wei Z.-H.,&Guo J.-M..(2014).Fast celestial positioning for space objects based on star identification.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,22(11),3074-3080.
MLA	Zhang L.,et al."Fast celestial positioning for space objects based on star identification".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 22.11(2014):3074-3080.

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