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Proceedings Paper

Performance investigation of stochastic parallel gradient descent algorithm based wave-front sensor-less adaptive optics for atmosphere turbulence compensation
Author(s): Zhihao Yu; Yan Li; Beibei Li; Donghao Zheng; Wei Li; Jifang Qiu; Yong Zuo; Xiaobin Hong; Hongxiang Guo; Jian Wu
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Paper Abstract

Stochastic parallel gradient descent (SPGD) algorithm is a kind of simple and practicable algorithm for adaptive optics (AO) to compensate the effects of turbulence. The relationship between the number of control variables and convergence effects is explored experimentally in this paper. We find that the number of control variables is not always the larger the better. Under the condition of weak turbulence, the algorithm with 6×6 control variables gives better results than 12×12 control variables and 8×8 control variables. With the increase of turbulence strength, the convergence effects of 12×12 control variables are better than 6×6 control variables and 8×8 control variables. In the condition of weak turbulence, SPGD algorithm with 6×6, 8×8, 12×12 control variables can improve coupling efficiency by 3.2dB, 3.1dB and 3.0dB respectively. In the condition of moderate turbulence, SPGD algorithm with 6×6, 8×8, 12×12 control variables can improve coupling efficiency by 6.4dB, 6.6dB, 7.1dB respectively. In the condition of strong turbulence, SPGD algorithm with 6×6, 8×8, 12×12 control variables can improve coupling efficiency by 6.2dB, 7.1dB, 10.2dB respectively

Paper Details

Date Published: 8 March 2018
PDF: 6 pages
Proc. SPIE 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 106975O (8 March 2018); doi: 10.1117/12.2311434
Show Author Affiliations
Zhihao Yu, Beijing Univ. of Posts and Telecommunications (China)
Yan Li, Beijing Univ. of Posts and Telecommunications (China)
Beibei Li, Beijing Univ. of Posts and Telecommunications (China)
Donghao Zheng, Beijing Univ. of Posts and Telecommunications (China)
Wei Li, Beijing Univ. of Posts and Telecommunications (China)
Jifang Qiu, Beijing Univ. of Posts and Telecommunications (China)
Yong Zuo, Beijing Univ. of Posts and Telecommunications (China)
Xiaobin Hong, Beijing Univ. of Posts and Telecommunications (China)
Hongxiang Guo, Beijing Univ. of Posts and Telecommunications (China)
Jian Wu, Beijing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 10697:
Fourth Seminar on Novel Optoelectronic Detection Technology and Application
Weiqi Jin; Ye Li, Editor(s)

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