Effect of point spread functions on star centroid error analysis

	Effect of point spread functions on star centroid error analysis
	Jiang, L.; Y. Zhang; L. Zhang; X. Zhang and J. Ren
	2015
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
卷号	44 期号:11 页码:3437-3445
摘要	Star centroid systematic error is called pixel frequency error, whose period is the width of the pixel. The analysis of the distribution of systematic error is useful in error compensation. Point spread function is the main factor which affects the distribution of systematic error. Traditionally the Gauss point spread function is used in the frequency analysis of the systematic error, but its reasonability has not been taken into consideration. With real star image considered, the Giancarlo point spread function was compared with the Gauss point spread function. Then the Giancarlo point spread function was used in the spacial frequency analysis of star centroid systematic error, and the theoretical formulas of the systematic error was obtained. Compared with the result of the traditional frequency analysis, an item that modulated the amplitude of the S curve distribution was added to the theoretical formulas, and that made the x coordinate systematic error distributed as an S curve along x axis and the amplitude of S curve changed along y axis. A simulation under a condition with noise was carried out, and the result was in accordance with the frequency analysis of this article. Finally an experiment is done, the result of the experiment is compensated for according to the theoretical formulas, the star centroid accuracy is improved by 54.42%, which is better than the traditional sine curve fitting compensation method. 2015, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
文章类型	期刊论文
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/56273
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Jiang, L.,Y. Zhang,L. Zhang,et al. Effect of point spread functions on star centroid error analysis[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2015,44(11):3437-3445.
APA	Jiang, L.,Y. Zhang,L. Zhang,&X. Zhang and J. Ren.(2015).Effect of point spread functions on star centroid error analysis.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,44(11),3437-3445.
MLA	Jiang, L.,et al."Effect of point spread functions on star centroid error analysis".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 44.11(2015):3437-3445.

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点扩散函数对星点提取误差分析的影响.ca（1253KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览下载