Deep learning wavefront sensing for fine phasing of segmented mirrors

doi:10.1364/OE.434024

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	Deep learning wavefront sensing for fine phasing of segmented mirrors
	Y. Wang; F. Jiang; G. Ju; B. Xu; Q. An; C. Zhang; S. Wang and S. Xu
刊名	Optics Express
	2021
卷号	29 期号:16 页码:25960-25978
ISSN号	10944087
DOI	10.1364/OE.434024
英文摘要	Segmented primary mirror provides many crucial important advantages for the construction of extra-large space telescopes. The imaging quality of this class of telescope is susceptible to phasing error between primary mirror segments. Deep learning has been widely applied in the field of optical imaging and wavefront sensing, including phasing segmented mirrors. Compared to other image-based phasing techniques, such as phase retrieval and phase diversity, deep learning has the advantage of high efficiency and free of stagnation problem. However, at present deep learning methods are mainly applied to coarse phasing and used to estimate piston error between segments. In this paper, deep Bi-GRU neural work is introduced to fine phasing of segmented mirrors, which not only has a much simpler structure than CNN or LSTM network, but also can effectively solve the gradient vanishing problem in training due to long term dependencies. By incorporating phasing errors (piston and tip-tilt errors), some low-order aberrations as well as other practical considerations, Bi-GRU neural work can effectively be used for fine phasing of segmented mirrors. Simulations and real experiments are used to demonstrate the accuracy and effectiveness of the proposed methods. 2021 Optical Society of America.
URL标识	查看原文
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/65129]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y. Wang,F. Jiang,G. Ju,et al. Deep learning wavefront sensing for fine phasing of segmented mirrors[J]. Optics Express,2021,29(16):25960-25978.
APA	Y. Wang.,F. Jiang.,G. Ju.,B. Xu.,Q. An.,...&S. Wang and S. Xu.(2021).Deep learning wavefront sensing for fine phasing of segmented mirrors.Optics Express,29(16),25960-25978.
MLA	Y. Wang,et al."Deep learning wavefront sensing for fine phasing of segmented mirrors".Optics Express 29.16(2021):25960-25978.