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Application of an interferometric method in phasing the segmented primary mirrors of the high-aperture telescope
Wang, Chenchen1,2; Fan, Xuewu1; Ma, Zhen1; Zou, Gangyi1,2; Li, Ruichang1,2
作者部门空间光学应用研究室
2018
发表期刊OPTIK
ISSN0030-4026
卷号154页码:503-509
产权排序1
摘要

The main method to improve the resolution of optical system is enlarging the pupil of the optical system, and by using several or even more small segmented mirrors to get an equivalent large diameter primary mirror is a common way. When the optical system enters the orbit, it should deploy the segmented mirrors first. The image quality of the optical system is determined by the deployed position precision of segmented mirrors. The phase adjusting process can be divided into two processions: coarse phasing and fine phasing. In the coarse phasing, interferometer and electronic speckle pattern interferometry is used to ensure the co-phased position of segmented mirrors on the ground and to obtain stripes on the back of the segmented mirrors respectively. When the optical system is unfolded, obtain the stripe again. Process the former stripe images and the later ones by mean square error, which can obtain the similarity of two images. According to the shape of stripe pattern and the similarity, adjust the position of segmented mirrors to complete the process of large piston adjusting. And analyze the stripe that is obtained by processing the electronic speckle images after the process above. Adjust the position of segmented mirrors according to the results until the adjusting of coarse-phasing is completed. With the simulation results, when the position of segmented mirrors with 0.0001 degrees tilted or 5 nm decentered, the similarity of standard image and simulation results are about 92% and 95% respectively. (C) 2017 Elsevier GmbH. All rights reserved.

 

关键词Geometric Optical Design Infrared Imaging Image Analysis Modulation
DOI10.1016/j.ijleo.2017.10.015
收录类别SCI ; EI
语种英语
WOS记录号WOS:000418731200064
EI入藏号20174404317692
引用统计
文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/30812
专题空间光学应用研究室
作者单位1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian, Shaanxi, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Wang, Chenchen,Fan, Xuewu,Ma, Zhen,et al. Application of an interferometric method in phasing the segmented primary mirrors of the high-aperture telescope[J]. OPTIK,2018,154:503-509.
APA Wang, Chenchen,Fan, Xuewu,Ma, Zhen,Zou, Gangyi,&Li, Ruichang.(2018).Application of an interferometric method in phasing the segmented primary mirrors of the high-aperture telescope.OPTIK,154,503-509.
MLA Wang, Chenchen,et al."Application of an interferometric method in phasing the segmented primary mirrors of the high-aperture telescope".OPTIK 154(2018):503-509.
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