Acta Optica Sinica, Volume. 44, Issue 4, 0411002(2024)

Imaging Characteristics of One-Dimensional Rotating Synthetic Array for Sparse Aperture

Huiyan Zhang1,2, Ming Liu1,2、*, Bu Ning1,2,3, Mei Hui1,2, Liquan Dong1,2,3, Lingqin Kong1,2, and Yuejin Zhao1,2
Author Affiliations
  • 1School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
  • 2Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, Beijing 100081, China
  • 3Yangtze Delta Region Academy of Beijing Institute of Technology, Jiaxing 314019, Zhejiang , China
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    Figures & Tables(11)
    One-dimensional multi-aperture (N=2, 3, 4, 5) array pupil structures and its autocorrelation distributions. (a) N=2,Fmax=50%, S=1; (b) N=3, Fmax=18.75%, S=1∶2; (c) N=4, Fmax=8.16%, S=1∶3∶2; (d) N=5, Fmax=4.13%, S=1∶3∶4∶2
    Pupil structure, three-dimensional MTF and PSF distributions of one-dimensional three-aperture array. (a) Pupil structure; (b) MTF; (c) PSF
    Pupil structure and MTF and PSF distributions in two and three dimensions after one rotation. (a) Pupil structure; (b) MTF (α=2π/7); (c) PSF (α=2π/7)
    Pupil structures, MTF spectra, and PSF distributions at different angles of single rotation. (a1)(a2) 2π/7; (b1)(b2) π/3; (c1)(c2) 2π/5; (d1)(d2) π/2; (e1)(e2) 2π/3
    Changes of rotation times, total number of sub-apertures, and filling factor under different rotation angles. (a) Total number of sub-apertures and number of rotations varying with rotation angle; (b) filling factor and total number of sub-apertures varying with rotation angle
    Pupil structures and corresponding two-dimensional and three-dimensional MTF and PSF distributions of rotating synthetic aperture and Golay-9 array. (a1)-(a4) OR6 array; (b1)-(b4) OR5 array; (c1)-(c4) OR4 array; (d1)-(d4) OR3 array; (e1)-(e4) OR2 array; (f1)-(f4) Golay-9 array
    One-dimensional MTF distributions of rotating synthetic aperture, single aperture, and Golay-9 array. (a) MTF along fx axis; (b) MTF along fy axis
    Simulation images of Golay-9, OR4, and OR3 arrays. (a) Original image; (b) simulation image of Golay-9 array; (c) simulation image of OR4 array; (d) simulation image of OR3 array
    Optical path diagram and experimental device diagram. (a) Optical path diagram; (b) experimental device diagram
    Experimental results of Golay-9, OR3, and OR4 arrays. (a) Image obtained by Golay-9 array; (b) image obtained by OR3 array; (c) image obtained by OR4 array; (d) line traces of horizontal bars of group 6; (e) line traces of vertical bars of group 6; (f) MTF estimation
    • Table 1. Evaluation indexes of imaging characteristics of single aperture, Golay-9, and rotating synthetic aperture array structures

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      Table 1. Evaluation indexes of imaging characteristics of single aperture, Golay-9, and rotating synthetic aperture array structures

      Array

      Number of

      sub-apertures

      Filling factor /%Practical cutoff frequency ρcMmid-freqPSNR /dBSSIM
      Single1100.001.00000.212831.180.9563
      Golay-9914.000.89510.078222.890.6149
      OR61547.150.79010.136025.580.7577
      OR51341.180.88890.125024.910.7140
      OR41134.840.79120.124524.800.7187
      OR3928.510.65280.122324.470.6910
      OR2722.170.53090.093723.220.6282
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    Huiyan Zhang, Ming Liu, Bu Ning, Mei Hui, Liquan Dong, Lingqin Kong, Yuejin Zhao. Imaging Characteristics of One-Dimensional Rotating Synthetic Array for Sparse Aperture[J]. Acta Optica Sinica, 2024, 44(4): 0411002

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    Paper Information

    Category: Imaging Systems

    Received: Oct. 17, 2023

    Accepted: Dec. 13, 2023

    Published Online: Feb. 23, 2024

    The Author Email: Liu Ming (bit411liu@bit.edu.cn)

    DOI:10.3788/AOS231668

    CSTR:32393.14.AOS231668

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