Infrared and Laser Engineering, Volume. 52, Issue 5, 20220679(2023)

Design of LEO target imaging mode with space-based Inverse Synthetic Aperture LADAR

Jingpeng Zhang1...2, Qihang Chen1,2, Yanhui Wang1,2, Lei Dong1,2, Zhenzhen Zheng1,2,*, and Wenxin Zhang12 |Show fewer author(s)
Author Affiliations
  • 1Institute of Microsatellite Innovation, Chinese Academy of Sciences, Shanghai 201304, China
  • 2Shanghai Microsatellite Engineering Center, Shanghai 201304, China
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    Figures & Tables(10)
    Schematic diagram of skimming imaging mode
    Variation of revisit period with orbit altitude in skimming imaging mode (d=50 km)
    Variation of revisit period with imaging distance in skimming imaging mode (H=1000 km)
    Schematic diagram of the co-orbital fly-around imaging mode
    Variation of fly-around period with orbit altitude
    Variation of coherent accumulation time with orbit altitude and imaging distance in skimming imaging mode
    Variation of coherent accumulation time with orbit altitude in fly-around imaging mode
    Relationship between minimum PRF for unambiguous azimuth imaging and imaging distance
    Relationship between SNR and imaging distance in different imaging modes
    • Table 1. Comparison of performance parameters of different imaging modes under given conditions

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      Table 1. Comparison of performance parameters of different imaging modes under given conditions

      Skimming imagingFly-around imaging
      Co-orbital/progradeCo-orbital/retrograde
      Relative anglar velocity/rad·s−11.021×10−52.003×10−39.962×10−4
      Revisit/fly-around period/h 170.890.871.75
      Coherent accumu- lation time/ms 103.600.53155.60
      PRF/kHz 0.2625.8412.85
      SNR/dB48.3025.3749.61
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    Jingpeng Zhang, Qihang Chen, Yanhui Wang, Lei Dong, Zhenzhen Zheng, Wenxin Zhang. Design of LEO target imaging mode with space-based Inverse Synthetic Aperture LADAR[J]. Infrared and Laser Engineering, 2023, 52(5): 20220679

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    Paper Information

    Category: Laser & laser optics

    Received: Sep. 19, 2022

    Accepted: --

    Published Online: Jul. 4, 2023

    The Author Email: Zheng Zhenzhen (zzzheng@126.com)

    DOI:10.3788/IRLA20220679

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