Infrared and Laser Engineering, Volume. 51, Issue 7, 20210756(2022)

Test method of the dynamic modulation transfer function in an indoor analog environment

Weiguang Zhang1, Xun Yu2, Feng Han2, Faqiang Zhang1, Yinhua Wu1, and Yujiao Chen2
Author Affiliations
  • 1School of Optoelectronic Engineering, Xi’an Technological University, Xi’an 710021, China
  • 2School of Weapon Science and Technology, Xi’an Technological University, Xi’an 710021, China
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    Figures & Tables(11)
    Indoor moving target simulation system
    (a) "Three-bar target" pattern; (b) "Four-bar target" pattern
    Schematic diagram of frequency and modulation computing for ''three-bar target''
    Variable frequency grating target pattern
    (a) Approximate ''four-bar target''; (b) Approximate ''three-bar target''
    Schematic diagram of frequency and modulation computing for approximate ''three-bar target''
    Comparative analysis of static MTF curve data
    (a) Test image data; (b) Randomly select a row image; (c) Segmentedany approximate ''three-bar target'' curve after removed background gray; (d) FFT operation for ''three-bar target''
    Comparative analysis of dynamic MTF curve data
    Dynamic MTF curve measured at three moving speeds of the target
    • Table 1. Recognition distance of target at different moving speeds

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      Table 1. Recognition distance of target at different moving speeds

      Target speed/km·h−1Recognition distance/km
      05.7
      604.9
      1004.4
      1204.0
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    Weiguang Zhang, Xun Yu, Feng Han, Faqiang Zhang, Yinhua Wu, Yujiao Chen. Test method of the dynamic modulation transfer function in an indoor analog environment[J]. Infrared and Laser Engineering, 2022, 51(7): 20210756

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    Paper Information

    Category: Photoelectric measurement

    Received: Jan. 25, 2022

    Accepted: --

    Published Online: Dec. 20, 2022

    The Author Email:

    DOI:10.3788/IRLA20210756

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