Adaptive piston correction of sparse aperture systems with stochastic parallel gradient descent algorithm

doi:10.1364/OE.26.009541

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	Adaptive piston correction of sparse aperture systems with stochastic parallel gradient descent algorithm
	Xie, Zongliang 1,2,3; Ma, Haotong 1,2; He, Xiaojun 1,2,3; Qi, Bo 1,2; Ren, Ge 1,2; Dong, Li 1,2,3; Tan, Yufeng 1,2,3
刊名	OPTICS EXPRESS
	2018-04-16
卷号	26 期号:8 页码:9541-9551
关键词	Adaptive optics Gradient methods Pistons Stochastic systems
ISSN号	1094-4087
DOI	10.1364/OE.26.009541
文献子类	J
英文摘要	A phased sparse aperture system provides an economic solution to get high resolution images with less volume and weight. The crucial point of such systems is adaptive correction of piston. that is, a close-loop control aiming at stabilizing the optical path differences within a fraction of the wavelength. In this paper. we present an autonomous phasing approach using stochastic parallel gradient descent algorithm through optimization of image quality. The synthetic system can be phased by iteratively commanding piston actuators without any additional optics. Simulations are first performed to test the validity. Then experimental results based on a binocular telescope testbed are presented, showing that our proposed close-loop control of piston correction doesn't only work with both laser and white-light point sources, but also with an extended object. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
WOS关键词	DISPERSED FRINGE SENSOR ; BAND PHASING ALGORITHM ; SEGMENTED TELESCOPES ; KECK TELESCOPES ; MIRROR SEGMENTS
语种	英语
WOS记录号	WOS:000430337700014
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/9341]
专题	光电技术研究所_光电工程总体研究室（一室）
作者单位	1.Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu; 610209, China; 2.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China; 3.University of Chinese Academy of Sciences, Beijing; 100039, China
推荐引用方式 GB/T 7714	Xie, Zongliang,Ma, Haotong,He, Xiaojun,et al. Adaptive piston correction of sparse aperture systems with stochastic parallel gradient descent algorithm[J]. OPTICS EXPRESS,2018,26(8):9541-9551.
APA	Xie, Zongliang.,Ma, Haotong.,He, Xiaojun.,Qi, Bo.,Ren, Ge.,...&Tan, Yufeng.(2018).Adaptive piston correction of sparse aperture systems with stochastic parallel gradient descent algorithm.OPTICS EXPRESS,26(8),9541-9551.
MLA	Xie, Zongliang,et al."Adaptive piston correction of sparse aperture systems with stochastic parallel gradient descent algorithm".OPTICS EXPRESS 26.8(2018):9541-9551.