961单元自适应光学系统波前处理器

贾建禄; 王建立; 赵金宇; 刘欣悦; 李洪文; 王亮; 林旭东; 赵雨菲

doi:10.3788/OPE.20132106.1387

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961单元自适应光学系统波前处理器

现代应用光学 | 更新时间：2020-08-12

- 961单元自适应光学系统波前处理器
- 961-element adaptive optical wave-front processor
- 光学精密工程 2013年21卷第6期页码：1387-1393
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所 2.中国科学院大学
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20132106.1387
  中图分类号： O439;TH743
- 收稿日期：2012-10-17，
  
  修回日期：2012-12-26，
  
  网络出版日期：2013-06-20，
  
  纸质出版日期：2013-06-15
- 稿件说明：
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贾建禄王建立赵金宇刘欣悦李洪文王亮林旭东赵雨菲. 961单元自适应光学系统波前处理器[J]. 光学精密工程, 2013,21(6): 1387-1393

JIA Jian-lu WANG Jian-li ZHAO Jin-yu LIU Xi-yue LI Hong-Wen WANG Liang LIN Xu-dong ZHAO Yu-fei. 961-element adaptive optical wave-front processor[J]. Editorial Office of Optics and Precision Engineering, 2013,21(6): 1387-1393
贾建禄王建立赵金宇刘欣悦李洪文王亮林旭东赵雨菲. 961单元自适应光学系统波前处理器[J]. 光学精密工程, 2013,21(6): 1387-1393 DOI： 10.3788/OPE.20132106.1387.

JIA Jian-lu WANG Jian-li ZHAO Jin-yu LIU Xi-yue LI Hong-Wen WANG Liang LIN Xu-dong ZHAO Yu-fei. 961-element adaptive optical wave-front processor[J]. Editorial Office of Optics and Precision Engineering, 2013,21(6): 1387-1393 DOI： 10.3788/OPE.20132106.1387.

摘要

针对大型地基高分辨率成像望远镜对自适应光学系统波前处理器在输出规模、处理速度和控制带宽方面的要求，研制了千单元级自适应光学系统。设计了一种由主控计算机、波前处理主板和可扩展的波前处理子板相结合，输出规模最大可达1 200单元的自适应光学系统波前处理器。采用大规模逻辑器件作核心处理芯片，用多线并行流水算法缩短波前处理延时，提高系统控制带宽。对设计完成的波前处理器进行了基于961单元变形镜的开环展平实验以及基于137单元变形镜的闭环校正实验。实验结果显示：系统最高采样帧频为2 000 frame/s 时，波前运算延时为20.96 s

表明文中提出的硬件扩展和多路并行流水算法对于大规模自适应光学系统波前处理可行且有效。

Abstract

In consideration of the requirements of a large ground-based high resolution imaging telescope for the Wave-front Processor (WFP) of an adaptive optical system in output scales

processing speeds and control bandwidths

an adaptive optical system with thousand elements was explored. The adaptive optical WFP was composed of a master control computer

a wave-front processing host board and expandable wave-front processing sub boards and its output scale could reach the maximum of 1 200 elements. Large-scale logic devices were adopted as main processing chips

and a multithreading parallel pipeline algorithm was used to shorten the wave-front processing delay and promote the controlling bandwidth of the system. Then

an open loop experiment based on 961-element deformable mirror and a closed corrected experiment based on 137-element deformable mirror were performed. The result shows that the wave-front processing delay is 20.96 s when the maximum sampling rate is 2000 frame/s，which demonstrates that the hardware expending circuit and multithreading parallel pipeline algorithm are feasible and effective for the wave-front processing of the adaptive optical systems.

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references

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