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Infrared and Laser Engineering, Volume. 52, Issue 9, 20230022(2023)

Area array TDI space camera for GEO target detection

Lin He1, Wudong Deng2, Liguo Song1, Xuguo Zhang1, Yeping Huang2, Yuchen Liu1, and Wenping Lei1
Author Affiliations
  • 1Beijing Institute of Space Mechanics and Electricity, Beijing 100094, China
  • 2Shanghai Institute of Satellite Engineering, Shanghai 201109, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
    Equations (10)
    References (18)
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    Figures & Tables(9)
    Schematic diagram of TDI imaging principle of area array

    Fig. 1. Schematic diagram of TDI imaging principle of area array

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    Schematic diagram of GEO target observed by area array TDI camera

    Fig. 2. Schematic diagram of GEO target observed by area array TDI camera

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    Camera observation of different inclination GEO target

    Fig. 3. Camera observation of different inclination GEO target

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    Camera imaging test

    Fig. 4. Camera imaging test

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    Camera response curve

    Fig. 5. Camera response curve

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    • Table 1. Angular velocity of low orbit zero inclination satellite and GEO target with different inclinations

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      Table 1. Angular velocity of low orbit zero inclination satellite and GEO target with different inclinations

      Target orbital inclination/(°) Relative angular velocity east to west/(°)·s−1Relative angular velocity north to south/(°)·s−1
      00.06530
      10.06538.7371×10−5
      20.06531.7472×10−4
      50.06544.3632×10−4
      100.06548.6933×10−4
      150.06550.0013

    • Table 2. Maximum integration time allowed for targets with different inclinations

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      Table 2. Maximum integration time allowed for targets with different inclinations

      Orbital inclination/(°) North-south image motion/pixel Maximum integration time allowed/s
      2≤123.84
      4≤111.93
      6≤17.96
      8≤15.98
      10≤14.79
      12≤14.05
      15≤13.2

    • Table 3. Different parameters of optical aperture and integration time of camera

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      Table 3. Different parameters of optical aperture and integration time of camera

      Optical aperture/mm Integration time/s SNRMagnitude
      1403.95.0915
      1503.45.1015
      1602.95.0015
      1702.65.0515
      1802.35.0215
      1902.15.0915
      2001.95.1115

    • Table 4. Camera response linearity test with integration time

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      Table 4. Camera response linearity test with integration time

      Integration time/sAverage DN value of 50 images
      0.08310
      0.16382
      0.32685
      0.641471
      0.961978
      1.282579
      1.63217
      1.923829
      2.244461
      2.565056
      2.885694
      3.06321
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    Lin He, Wudong Deng, Liguo Song, Xuguo Zhang, Yeping Huang, Yuchen Liu, Wenping Lei. Area array TDI space camera for GEO target detection[J]. Infrared and Laser Engineering, 2023, 52(9): 20230022

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    Paper Information

    Category: Optical design

    Received: Jan. 12, 2023

    Accepted: --

    Published Online: Oct. 23, 2023

    The Author Email:

    DOI:10.3788/IRLA20230022

    Topics

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