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Adaptive piston correction of sparse aperture systems with stochastic parallel gradient descent algorithm
Xie, Zongliang1,2,3; Ma, Haotong1,2; He, Xiaojun1,2,3; Qi, Bo1,2; Ren, Ge1,2; Dong, Li1,2,3; Tan, Yufeng1,2,3
Source PublicationOPTICS EXPRESS
Volume26Issue:8Pages:9541-9551
2018-04-16
Language英语
ISSN1094-4087
DOI10.1364/OE.26.009541
Indexed BySCI ; Ei
WOS IDWOS:000430337700014
EI Accession Number20181605036641
SubtypeJ
AbstractA 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
KeywordAdaptive optics Gradient methods Pistons Stochastic systems
WOS KeywordDISPERSED FRINGE SENSOR ; BAND PHASING ALGORITHM ; SEGMENTED TELESCOPES ; KECK TELESCOPES ; MIRROR SEGMENTS
EI KeywordsAdaptive optics ; Gradient methods ; Pistons ; Stochastic systems
EI Classification Number612.1.1 Internal Combustion Engine Components ; 731.1 Control Systems ; 741.1 Light/Optics ; 921.6 Numerical Methods
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Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/9341
Collection光电工程总体研究室(一室)
Affiliation1.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
Recommended Citation
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.
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