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基于焦面复制方法的自适应光学系统静态像差校正技术

张天宇,王钢,张熙,窦江培

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张天宇, 王钢, 张熙, 窦江培. 基于焦面复制方法的自适应光学系统静态像差校正技术[J]. , 2022, 15(3): 545-551. doi: 10.37188/CO.2021-0182
引用本文: 张天宇, 王钢, 张熙, 窦江培. 基于焦面复制方法的自适应光学系统静态像差校正技术[J]. , 2022, 15(3): 545-551.doi:10.37188/CO.2021-0182
ZHANG Tian-yu, WANG Gang, ZHANG Xi, DOU Jiang-pei. Staticaberration correction technique for adaptive optics system based on focal-plane copy approach[J]. Chinese Optics, 2022, 15(3): 545-551. doi: 10.37188/CO.2021-0182
Citation: ZHANG Tian-yu, WANG Gang, ZHANG Xi, DOU Jiang-pei. Staticaberration correction technique for adaptive optics system based on focal-plane copy approach[J].Chinese Optics, 2022, 15(3): 545-551.doi:10.37188/CO.2021-0182

基于焦面复制方法的自适应光学系统静态像差校正技术

doi:10.37188/CO.2021-0182
基金项目:国家自然科学基金项目(No. 11827804,No. U2031210,No. 11673042);中国载人航天工程巡天空间望远镜专项科学研究经费(No. CMS-CSST-2021-A11);中科院对外合作重点项目(No. 114A32KYSB20160057);中科院战略性先导科技专项A类资助(No. XDA15010300)。
详细信息
    作者简介:

    张天宇(1992—),男,江苏南京人,博士研究生,2019年于桂林电子科技大学获得硕士学位,主要从事自适应光学自动控制方面的研究。E-mail:tyzhang2019@niaot.ac.cn

    王 钢(1988—),男,黑龙江齐齐哈尔人,博士,2020年于中国科学院大学获得博士学位,主要从事太阳自适应光学并行优化算法及变形镜静态误差校正的研究。E-mail:gwang@niaot.ac.cn

    张 熙(1984—),江苏南京人,男,博士,副研究员,硕士生导师,2013年于中国科学院大学获得博士学位,主要从事自适应光学和空间高对比度成像的研究。E-mail:xzhang@niaot.ac.cn

    窦江培(1981—),男,河北衡水人,博士,研究员, 博士生导师,2009年于中国科学院研究生院获得天体物理学博士学位,主要从事太阳系外行星天文高对比度直接成像技术与实测研究。E-mail:jpdou@niaot.ac.cn

  • 中图分类号:P111.3;TP391.8

Staticaberration correction technique for adaptive optics system based on focal-plane copy approach

Funds:Supported by the National Natural Science Foundation of China (No. 11827804, No. U2031210, No. 11673042); Special Scientific Research Funds for China′s Manned Space Project Sky Survey Space Telescope (No. CMS-CSST-2021-A11);Key foreign cooperation projects, the Chinese Academy of Sciences (No. 114A32KYSB20160057); The Strategic Priority Research Program (category A) of the Chinese Academy of Sciences (No. XDA15010300)
More Information
  • 摘要:限制自适应光学(Adaptive Optics, AO)系统表现的一个关键因素是由波前传感器所在路径和科学成像路径之间差异引起的非共光路像差(Non-Common Path Aberration,NCPA),同时AO系统共光路部分也会不可避免地引入静态像差。为此,本文提出了一种基于焦面点扩散函数(Point Spread Function,PSF)复制的技术,用于校正AO系统中的静态像差。此技术利用点光源产生的PSF图像作为参考图像,通过迭代优化算法控制可变形镜改变其面型,将参考PSF图像复制到AO系统科学成像路径。实验结果表明,校正后的斯特列尔比(Strehl Ratio,SR)从初始的0.312提高到0.995。此技术可以稳定、快速地获得全局校正结果,特别是在系统具有较大的初始静态像差时。

  • 图 1校正系统原理图

    Figure 1.Block diagram of the correction system

    图 2焦面PSF图像。(a)初始图像;(b)校正后图像;(c)参考图像

    Figure 2.The focal-plane PSF image. (a) Initial image; (b) corrected image; (c) reference image

    图 3评价函数曲线

    Figure 3.Metric function curve

    图 4校正后波前图

    Figure 4.The corrected wavefront map

    图 5焦面能量优化方法校正后焦面PSF图像和波前图

    Figure 5.PSF corrected by the focal plane energy optimization method and the corresponding corrected wavefront map

    图 6瞳面方法校正后PSF图像和波前图

    Figure 6.PSF corrected by the pupil plane approach and the corresponding corrected wavefront map

    表 1校正前后系统各项Zernike系数

    Table 1.Zernike coefficients of the system before and after correction

    Zernike多项式系数 校正前 校正后
    Astigmatismy −0.029 0.001
    Astigmatismx 0.127 -0.003
    Trefoily 0.013 0.000
    Comax −0.038 −0.002
    Comay −0.035 0.001
    Trefoilx 0.028 −0.004
    Tetrafoily 0.009 −0.000
    Secondary Astigmatismy −0.040 −0.000
    Primary Spherical −0.061 0.003
    Secondary Astigmatismx 0.035 0.000
    Tetrafoilx 0.111 −0.002
    下载: 导出CSV

    表 23种方法校正后Zernike系数

    Table 2.Zernike coefficients corrected by 3 kinds of methods

    Zernike
    多项式系数
    焦面能量
    优化法
    瞳面
    校正法
    焦面
    复制技术
    Astigmatismy 0.039 0.009 0.001
    Astigmatismx 0.003 0.002 −0.003
    Trefoily 0.001 0.002 0.000
    Comax 0.007 −0.002 −0.002
    Comay −0.008 −0.001 0.001
    Trefoilx 0.006 0.000 −0.004
    Tetrafoily 0.005 0.001 −0.000
    Secondary Astigmatismy −0.004 0.000 −0.000
    Primary Spherical −0.004 0.001 0.003
    Secondary Astigmatismx −0.034 −0.001 0.000
    Tetrafoilx −0.013 0.005 −0.002
    下载: 导出CSV
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出版历程
  • 收稿日期:2021-10-27
  • 修回日期:2021-11-17
  • 录用日期:2022-01-21
  • 网络出版日期:2022-01-27
  • 刊出日期:2022-05-20

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