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适用于近地面成像的自适应光学系统研究

王海铭 权佳宁 葛宝臻

王海铭, 权佳宁, 葛宝臻. 适用于近地面成像的自适应光学系统研究[J]. 中国光学(中英文), 2023, 16(4): 843-852. doi: 10.37188/CO.2022-0230
引用本文: 王海铭, 权佳宁, 葛宝臻. 适用于近地面成像的自适应光学系统研究[J]. 中国光学(中英文), 2023, 16(4): 843-852. doi: 10.37188/CO.2022-0230
WANG Hai-ming, QUAN Jia-ning, GE Bao-zhen. An adaptive optics system suitable for near-ground imaging[J]. Chinese Optics, 2023, 16(4): 843-852. doi: 10.37188/CO.2022-0230
Citation: WANG Hai-ming, QUAN Jia-ning, GE Bao-zhen. An adaptive optics system suitable for near-ground imaging[J]. Chinese Optics, 2023, 16(4): 843-852. doi: 10.37188/CO.2022-0230

适用于近地面成像的自适应光学系统研究

doi: 10.37188/CO.2022-0230
基金项目: 国家自然科学基金项目(No. 61535008)
详细信息
    作者简介:

    王海铭(1996—),男,吉林白城人,硕士研究生,2019年于长春理工大学获得学士学位,现就读于天津大学精密仪器与光电子工程学院,攻读光学工程学术硕士学位,主要研究方向为光学成像技术。E-mail:1437177122@qq.com

    权佳宁(1993—),男,河北沧州人,博士研究生,2019年于河北工业大学获得硕士学位,现就读于天津大学精密仪器与光电子工程学院,攻读光学工程学术博士学位,主要从事深度学习、光电检测方面的研究。E-mail:jianing_quan@tju.edu.cn

    葛宝臻(1964—),男,内蒙古卓资人,博士,教授,博士生导师,主要从事三维彩色数字成像技术、光电检测技术、激光粒子测量方面的研究。E-mail:gebz163@163.com

  • 中图分类号: O43

An adaptive optics system suitable for near-ground imaging

Funds: Supported by National Natural Science Foundation of China (No. 61535008)
More Information
  • 摘要:

    为了克服近地面湍流对几十到几百米中长成像距离下光学系统成像质量的不利影响,设计了基于长焦距望远物镜和一体化自适应模块的光学成像系统。在系统中心高度1.9 m及50~200 m的成像距离下,开展了分辨率板的室外成像实验。实验结果表明,在近地面的50~200 m中长距离下湍流对成像质量的影响明显,所搭建的实验系统能够在不同距离下有效克服湍流影响,提高图像的分辨率和清晰度的一致性,但随着成像距离的增加,湍流影响的增大,系统的校正能力降低,成像质量下降。系统在100 m成像距离下的成像分辨率能够达到0.5 mm。在200 m的距离对混凝土模型表面裂缝进行了观测及校正实验,实验结果表明,系统能够抑制湍流影响,提高裂缝图像的清晰度,验证了系统的实际应用能力。

     

  • 图 1  系统结构原理图

    Figure 1.  Schematic diagram of the system structure

    图 2  S-H波前传感器原理示意图。(a)光路示意图;(b)光斑图

    Figure 2.  Schematic diagram of S-H wavefront sensor. (a) Schematic diagram of optical path; (b) spot diagram

    图 3  自适应光学成像系统实物图。(a)一体化成像模块;(b)成像系统

    Figure 3.  Physical map of the adaptive optics imaging system. (a) Integrated imaging module; (b) imaging system

    图 4  室外实验现场照片

    Figure 4.  Photo of the outdoor experiment site

    图 5  不同距离处校正前后的分辨率板图像,从左到右分别为第1、6、11、16和21帧图像。(a)50 m校正前;(b)50 m校正后;(c)100 m校正前;(d)100 m校正后;(e)150 m校正前;(f)150 m校正后;(g)200 m校正前;(h)200 m校正后

    Figure 5.  The resolution plate images before and after correction at different distances. From left to right are the 1st, 6th, 11th, 16th and 21st frame images. (a) Before and (b) after correction with 50 m imaging range; (c) before and (d) after correction with 100 m imaging range; (e) before and (f) after correction with 150 m imaging range; (g) before and (h) after correction with 200 m imaging range

    图 6  不同距离处校正前后的波前PV值及RMS值的曲线图。(a~d)50 m、100 m、150 m和200 m的PV;(e~h)50 m、100 m、150 m和200 m的RMS

    Figure 6.  Curves of PV and RMS values of the wavefront before and after correction at different distances. (a~d) PV values at 50 m, 100 m, 150 m and 200 m; (e~h) RMS values at 50 m, 100 m, 150 m and 200 m

    图 7  对应图5(d)第1帧图像的局部放大图

    Figure 7.  Partial enlarged image corresponding to the first frame image in Figure. 5(d)

    图 8  混凝土模型室外实验现场照片

    Figure 8.  Outdoor experiment site photo of concrete model

    图 9  200 m处校正前后的混凝土模型图像,从左到右分别为第1、6、11、16和21帧图像。(a)校正前及(b)校正后结果

    Figure 9.  Concrete model images before and after correction at 200 m. From left to right are the 1st, 6th, 11th, 16th and 21st frame images. (a) Before and (b) after correction results

    表  1  关键器件参数

    Table  1.   Parameters of key devices

    DeviceParameterValue
    Telescope objectiveAperture/mm356
    Focal length/mm3556
    DMAperture/mm13.5
    Number of drives97
    Drive interval/mm1.5
    S-H WFSAperture/mm5.85
    Number of sub-apertures1280
    Frame rate/fps100
    Wavelength range/nm400~1100
    Microlens focal length/mm3.5
    CCDHorizontal and vertical pixels2560×2048
    Frame rate/fps62
    Pixel size/µm5
    下载: 导出CSV

    表  2  透镜及棱镜的主要参数

    Table  2.   Main parameters of the lens and prism

    Optical elementFocal length/mmAperture/mmMaterial
    L19030H-K9、H-ZF2
    L25030H-K9、H-ZF2
    L310025.4H-K9、H-ZF2
    L46020H-K9、H-ZF2
    BS25.4K9
    下载: 导出CSV

    表  3  不同成像距离的分辨率板在校正前后的PV及RMS均值

    Table  3.   PV and RMS mean values of the resolution plate at different distances before and after correction

    Distance/mPV /μmRMS /μm
    BeforeAfterPct/%BeforeAfterPct/%
    504.7031.74562.891.2180.38468.47
    1006.0772.57957.561.5190.64357.67
    1508.8223.86356.211.9270.93651.43
    20031.3616.5847.157.8264.10547.55
    下载: 导出CSV

    表  4  不同距离的分辨率板在校正前后的BRISQUE及PIQE均值

    Table  4.   BRISQUE and PIQE mean values of the resolution plate at different distances before and after correction

    Distance/mBRISQUEPIQE
    BeforeAfterPct/%BeforeAfterPct/%
    5016.7911.6130.8313.039.3828.01
    10023.3717.6324.5622.0516.9922.92
    15032.3120.5336.4627.1719.926.78
    20045.6336.220.6640.4235.113.16
    下载: 导出CSV

    表  5  200 m处的混凝土模型在校正前后的PV及RMS均值

    Table  5.   PV and RMS mean values of the concrete model at 200 m before and after correction

    Distance/mPV /μmRMS /μm
    BeforeAfterPct/%BeforeAfterPct/%
    20017.5984.55674.11 4.4110.91679.23
    下载: 导出CSV

    表  6  200 m处的混凝土模型在校正前后的BRISQUE及PIQE均值

    Table  6.   BRISQUE and PIQE mean values of the concrete model at 200 m before and after correction

    Distance/mBRISQUEPIQE
    BeforeAfterPct/%BeforeAfterPct/%
    20038.6521.3444.7939.9524.7238.12
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-11-09
  • 修回日期:  2022-12-01
  • 网络出版日期:  2023-02-07

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