Coarse co-phasing method based on slope of visibility-enhanced dispersed fringe pattern for segmented telescope
文献类型：期刊论文
| 作者 | Zhang, Yongfeng1,2,3; Xian, Hao2,3 |
| 刊名 | Optics Communications
 |
| 出版日期 | 2020-03-15 |
| 卷号 | 459 |
| 关键词 | Slope Visibility enhancement Coarse cophasing DFS Segmented mirror |
| ISSN号 | 0030-4018 |
| DOI | 10.1016/j.optcom.2019.124998 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Dispersed fringe sensing (DFS) is a promising strategy to bring segmented primary mirror into in-phase for large-aperture segmented telescope. Conventional intensity-based piston extraction methods show operational complexity due to the spectral calibration and poor sensing accuracy for large piston error because of the terrible visibility resulting from the dense fringe modulation. In order to overcome these disadvantages, a visibility improvement technique based on side-lobe enhancement and a slope-based piston extraction algorithm are developed. By scaling up the side lobes in 2-D spectrum of dispersed fringe pattern (DFP), the visibility of DFP could be greatly improved. At the same time, by theoretical analysis, the slope of dispersed fringe is not sensitive to the spectral non-uniformity of the broadband source, thus, the introduced piston extraction algorithm avoids the procedure of spectral calibration. Numerical experiment is conducted to demonstrate its feasibility and accuracy. It provides an efficient, alternative solution to large-scale piston sensing via dispersed fringe sensor. © 2019 Elsevier B.V. |
| 出版地 | AMSTERDAM |
| WOS研究方向 | Optics |
| 语种 | 英语 |
| WOS记录号 | WOS:000505990000056 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/10105]  |
| 专题 | 光电技术研究所_自适应光学技术研究室（八室） |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing; 100049, China 2.Key Laboratory of Adaptive Optics, Chinese Academy of Sciences, Chengdu; Sichuan; 610209, China; 3.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; Sichuan; 610209, China; |
| 推荐引用方式 GB/T 7714 | Zhang, Yongfeng,Xian, Hao. Coarse co-phasing method based on slope of visibility-enhanced dispersed fringe pattern for segmented telescope[J]. Optics Communications,2020,459. |
| APA | Zhang, Yongfeng,&Xian, Hao.(2020).Coarse co-phasing method based on slope of visibility-enhanced dispersed fringe pattern for segmented telescope.Optics Communications,459. |
| MLA | Zhang, Yongfeng,et al."Coarse co-phasing method based on slope of visibility-enhanced dispersed fringe pattern for segmented telescope".Optics Communications 459(2020). |
入库方式： OAI收割
来源：光电技术研究所
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