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Laser & Optoelectronics Progress, Volume. 61, Issue 12, 1228009(2024)

On-Orbit Test of Modulation Transfer Function for Short-Wave Infrared Camera

Wei Wang1,2、* and Luhe Zhang1,2
Author Affiliations
  • 1The 54th Research Institute of China Electronic Technology Group Corporation, Shijiazhuang 050011, Hebei, China
  • 2Hebei Key Laboratory of Photonic Information Technology and Application, Shijiazhuang 050011, Hebei, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (8)
    Equations (7)
    References (17)
    Cited By (2)
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    Figures & Tables(8)
    On-orbit modulation transfer function test process. (a) Edge target; (b) ESF; (c) LSF; (d) MTF

    Fig. 1. On-orbit modulation transfer function test process. (a) Edge target; (b) ESF; (c) LSF; (d) MTF

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    Schematic diagram of sampling areas for short-wave infrared sensing image

    Fig. 2. Schematic diagram of sampling areas for short-wave infrared sensing image

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    Schematic diagram of extracting edge of slanted-edge

    Fig. 3. Schematic diagram of extracting edge of slanted-edge

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    Comparison of edge diffusion function polynomial fitting and Fermi fitting curves

    Fig. 4. Comparison of edge diffusion function polynomial fitting and Fermi fitting curves

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    Differential edge diffusion function. (a) Normalized line spread function; (b) normalized modulation transfer function

    Fig. 5. Differential edge diffusion function. (a) Normalized line spread function; (b) normalized modulation transfer function

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    Curves of normalized MTF

    Fig. 6. Curves of normalized MTF

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    • Table 1. Basic parameters of short-wave infrared camera

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      Table 1. Basic parameters of short-wave infrared camera

      ParameterValue
      Focal length /mm132
      Field of view /（°）9.0
      F-number4
      Wavelength /μm1.195‒1.690
      Orbital altitude /km528
      Pixel scale /（pixel×pixel）640×512
      Pixel size /μm25
      Resolution /m100
      Average MTF≥0.55@20 lp/mm

    • Table 2. On-orbit MTF test values of SWIR camera

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      Table 2. On-orbit MTF test values of SWIR camera

      DirectionSampling areaSizeSNRMTF test value
      In-trackArea 112×1949.49280.0838
      Area 29×968.89490.0941
      Cross-trackArea 311×13108.84950.1058
      Area 412×1735.37620.1109
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    Wei Wang, Luhe Zhang. On-Orbit Test of Modulation Transfer Function for Short-Wave Infrared Camera[J]. Laser & Optoelectronics Progress, 2024, 61(12): 1228009

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    Paper Information

    Category: Remote Sensing and Sensors

    Received: Oct. 7, 2023

    Accepted: Jan. 4, 2024

    Published Online: Jun. 6, 2024

    The Author Email: Wei Wang (ciomp2015@163.com)

    DOI:10.3788/LOP232235

    CSTR:32186.14.LOP232235

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology