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Comparison between iterative wavefront control algorithm and direct gradient wavefront control algorithm for adaptive optics system
Cheng Sheng-Yi1,2,3; Liu Wen-Jin1,3; Chen Shan-Qiu1,3; Dong Li-Zhi1,3; Yang Ping1,3; Xu Bing1
Source PublicationCHINESE PHYSICS B
Volume24Issue:8
2015-08-01
Language英语
ISSN1674-1056
DOI10.1088/1674-1056/24/8/084214
Indexed BySCI
WOS IDWOS:000361906000043
SubtypeArticle
AbstractAmong all kinds of wavefront control algorithms in adaptive optics systems, the direct gradient wavefront control algorithm is the most widespread and common method. This control algorithm obtains the actuator voltages directly from wavefront slopes through pre-measuring the relational matrix between deformable mirror actuators and Hartmann wavefront sensor with perfect real-time characteristic and stability. However, with increasing the number of sub-apertures in wavefront sensor and deformable mirror actuators of adaptive optics systems, the matrix operation in direct gradient algorithm takes too much time, which becomes a major factor influencing control effect of adaptive optics systems. In this paper we apply an iterative wavefront control algorithm to high-resolution adaptive optics systems, in which the voltages of each actuator are obtained through iteration arithmetic, which gains great advantage in calculation and storage. For AO system with thousands of actuators, the computational complexity estimate is about O(n(2)) similar to O(n(3)) in direct gradient wavefront control algorithm, while the computational complexity estimate in iterative wavefront control algorithm is about O(n) similar to (O(n)(3/2)), in which n is the number of actuators of AO system. And the more the numbers of sub-apertures and deformable mirror actuators, the more significant advantage the iterative wavefront control algorithm exhibits.
KeywordAdaptive Optics Iterative Wavefront Control Algorithm Direct Gradient Wavefront Control Algorithm
WOS KeywordDEFORMABLE-MIRROR
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/3712
Collection光电技术研究所被WoS收录文章
Affiliation1.Chinese Acad Sci, Lab Adapt Opt, Inst Opt & Elect, Chengdu 610209, Peoples R China
2.Chinese Acad Sci, Key Lab Adapt Opt, Chengdu 610209, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Cheng Sheng-Yi,Liu Wen-Jin,Chen Shan-Qiu,et al. Comparison between iterative wavefront control algorithm and direct gradient wavefront control algorithm for adaptive optics system[J]. CHINESE PHYSICS B,2015,24(8).
APA Cheng Sheng-Yi,Liu Wen-Jin,Chen Shan-Qiu,Dong Li-Zhi,Yang Ping,&Xu Bing.(2015).Comparison between iterative wavefront control algorithm and direct gradient wavefront control algorithm for adaptive optics system.CHINESE PHYSICS B,24(8).
MLA Cheng Sheng-Yi,et al."Comparison between iterative wavefront control algorithm and direct gradient wavefront control algorithm for adaptive optics system".CHINESE PHYSICS B 24.8(2015).
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