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Research of Centroiding Algorithms for Extended and Elongated Spot of Sodium Laser Guide Star
Shao, Yayun; Zhang, Yudong; Wei, Kai
2016
发表期刊Proceedings of SPIE: 8TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: LARGE MIRRORS AND TELESCOPES
ISSN0277-786X
卷号9682页码:968216
文章类型C
摘要Laser guide stars (LGSs) increase the sky coverage of astronomical adaptive optics systems. But spot array obtained by Shack-Hartmann wave front sensors (WFSs) turns extended and elongated, due to the thickness and size limitation of sodium LGS, which affects the accuracy of the wave front reconstruction algorithm. In this paper, we compared three different centroiding algorithms, the Center-of-Gravity (CoG), weighted CoG (WCoG) and Intensity Weighted Centroid (IWC), as well as those accuracies for various extended and elongated spots. In addition, we compared the reconstructed image data from those three algorithms with theoretical results, and proved that WCoG and IWC are the best wave front reconstruction algorithms for extended and elongated spot among all the algorithms.
关键词Manufacture Mirrors Optical Testing Sodium Stars Telescopes Wavefronts
DOI10.1117/12.2243580
收录类别SCI ; Ei
语种英语
WOS记录号WOS:000387746500041
引用统计
文献类型期刊论文
条目标识符http://ir.ioe.ac.cn/handle/181551/8435
专题自适应光学技术研究室(八室)
作者单位Key Laboratory Adaptive Optical, Chinese Academy of Sciences, Chengdu, Sichuan, China
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Shao, Yayun,Zhang, Yudong,Wei, Kai. Research of Centroiding Algorithms for Extended and Elongated Spot of Sodium Laser Guide Star[J]. Proceedings of SPIE: 8TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: LARGE MIRRORS AND TELESCOPES,2016,9682:968216.
APA Shao, Yayun,Zhang, Yudong,&Wei, Kai.(2016).Research of Centroiding Algorithms for Extended and Elongated Spot of Sodium Laser Guide Star.Proceedings of SPIE: 8TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: LARGE MIRRORS AND TELESCOPES,9682,968216.
MLA Shao, Yayun,et al."Research of Centroiding Algorithms for Extended and Elongated Spot of Sodium Laser Guide Star".Proceedings of SPIE: 8TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: LARGE MIRRORS AND TELESCOPES 9682(2016):968216.
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