• Infrared and Laser Engineering
  • Vol. 52, Issue 9, 20230022 (2023)
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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    DOI: 10.3788/IRLA20230022 Cite this Article
    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 Copy Citation Text show less
    Schematic diagram of TDI imaging principle of area array
    Fig. 1. Schematic diagram of TDI imaging principle of area array
    Schematic diagram of GEO target observed by area array TDI camera
    Fig. 2. Schematic diagram of GEO target observed by area array TDI camera
    Camera observation of different inclination GEO target
    Fig. 3. Camera observation of different inclination GEO target
    Camera imaging test
    Fig. 4. Camera imaging test
    Camera response curve
    Fig. 5. Camera response curve
    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 1. Angular velocity of low orbit zero inclination satellite and GEO target 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 2. Maximum integration time allowed for targets with different inclinations
    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 3. Different parameters of optical aperture and integration time of camera
    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
    Table 4. Camera response linearity test with integration time
    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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