Numerical comparison of adaptive optics correction based on stochastic parallel gradient descent and phase conjugate in scintillation conditions

doi:10.1016/j.ijleo.2020.164528

	Numerical comparison of adaptive optics correction based on stochastic parallel gradient descent and phase conjugate in scintillation conditions
	Ma, Huimin 2; Liu, Haiqiu 2; Zhang, Jinghui 1; Zhang, Pengfei 3
刊名	OPTIK
	2020-04-01
卷号	208
关键词	Adaptive optics Stochastic parallel gradient descent Phase conjugate Atmosphere turbulence
ISSN号	0030-4026
DOI	10.1016/j.ijleo.2020.164528
通讯作者	Zhang, Pengfei(pfzhang@aiofm.ac.cn)
英文摘要	Adaptive optics (AO) systems with wavefront sensors are based on the phase conjugate (PC) principle. These systems do not work effectively when the scintillation intensity in the receiver aperture becomes significant. AO correction technique based on stochastic parallel gradient descent (SPGD) control algorithm is an alternative approach which does not depend on wavefront sensor but optimizes the performance metric directly. In this study, we established a simulation model for an SPGD-AO system in which the SPGD optimisation algorithm was applied to control the tip-tilt and the deformable mirrors to correct the aberration in several turbulence scenarios. The performances of the SPGD-AO and the PC-AO correction schemes were tested in different scintillation conditions based on numerical simulations of dynamic turbulence. In weak scintillation conditions, the effects of the SPGD-AO correction were as accurate as those of the PC-AO correction, but upon scintillation increasessR > 12, the SPGD-AO yielded a significant correction effect compared to PC correction. The results also showed that SPGD did not require any wavefront phase information, but it was very effective for discontinuous phase correction.
资助项目	National Natural Science Foundation of China[61905002]
WOS关键词	ATMOSPHERIC-COMPENSATION ; BRANCH-POINTS ; OPTIMIZATION ; SYSTEMS ; BEACON
WOS研究方向	Optics
语种	英语
出版者	ELSEVIER GMBH
WOS记录号	WOS:000536565100006
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/103199]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, Pengfei
作者单位	1.Chinese Acad Sci, Key Lab Atmospher Composit & Opt Radiat, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 2.Anhui Agr Univ, Coll Informat & Comp, Hefei 230036, Peoples R China 3.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Tech Biol & Agr Engn, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Ma, Huimin,Liu, Haiqiu,Zhang, Jinghui,et al. Numerical comparison of adaptive optics correction based on stochastic parallel gradient descent and phase conjugate in scintillation conditions[J]. OPTIK,2020,208.
APA	Ma, Huimin,Liu, Haiqiu,Zhang, Jinghui,&Zhang, Pengfei.(2020).Numerical comparison of adaptive optics correction based on stochastic parallel gradient descent and phase conjugate in scintillation conditions.OPTIK,208.
MLA	Ma, Huimin,et al."Numerical comparison of adaptive optics correction based on stochastic parallel gradient descent and phase conjugate in scintillation conditions".OPTIK 208(2020).