Piston error correction of sparse aperture systems using the metaheuristic stochastic parallel gradient descent algorithm

doi:10.1364/AO.394501

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	Piston error correction of sparse aperture systems using the metaheuristic stochastic parallel gradient descent algorithm
	Yang, Kaiyuan 1,3; Xie, Zongliang 1,2; Ma, Haotong 1,3; Hu, Hongyi 1,3; Qi, Bo 1,3; Shi, Jianliang 1,3; Wang, Qiang 1,3; Lv, Wenyi 1,3
刊名	Applied Optics
	2020-08-01
卷号	59 期号:22 页码:6505-6516
ISSN号	1559-128X
DOI	10.1364/AO.394501
文献子类	期刊论文
英文摘要	The next generation of optical telescopes will provide high-resolution imaging of celestial objects by using the aperture synthesis technique. To preserve the quality of the image, fast corrections of the pistons among subapertures have to be applied, namely, the co-phasing of the array. The image-based co-phasing method via an optimization procedure has been newly developed. Despite simplicity and strong commonality, when dealing with large piston errors, this correction method is also faced with a problem in which the metric function easily falls into the local convergence, especially in the case of broadband imaging with many subapertures. In this study, an improved stochastic parallel gradient descent (SPGD) algorithm based on heuristic search is proposed for co-phasing, termed the metaheuristic SPGD algorithm. The heuristic research scheme assists the original SPGD algorithm in getting rid of local extrema. By iterations of this algorithm, the synthetic system can be co-phased without any additional instruments and operations. The effectiveness of the proposed algorithm is verified by means of simulation. Given the efficiency and superiority, it is expected that the method proposed in this study may find wide applications in multi-aperture imaging. © 2020 Optical Society of America
出版地	WASHINGTON
WOS关键词	DISPERSED FRINGE SENSOR ; SEGMENTED MIRRORS ; KECK TELESCOPES
WOS研究方向	Optics
语种	英语
出版者	OPTICAL SOC AMER
WOS记录号	WOS:000571442700042
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/10034]
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, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China; 2.State Key Laboratory of Pulsed Power Laser Technology, Hefei; 230037, China 3.University of Chinese Academy of Sciences, Beijing; 100039, China;
推荐引用方式 GB/T 7714	Yang, Kaiyuan,Xie, Zongliang,Ma, Haotong,et al. Piston error correction of sparse aperture systems using the metaheuristic stochastic parallel gradient descent algorithm[J]. Applied Optics,2020,59(22):6505-6516.
APA	Yang, Kaiyuan.,Xie, Zongliang.,Ma, Haotong.,Hu, Hongyi.,Qi, Bo.,...&Lv, Wenyi.(2020).Piston error correction of sparse aperture systems using the metaheuristic stochastic parallel gradient descent algorithm.Applied Optics,59(22),6505-6516.
MLA	Yang, Kaiyuan,et al."Piston error correction of sparse aperture systems using the metaheuristic stochastic parallel gradient descent algorithm".Applied Optics 59.22(2020):6505-6516.