Infrared and Laser Engineering, Volume. 52, Issue 10, 20230027(2023)

A dynamic range compression method for coaxial warning LiDAR based on overlap factor

Jing Liu1,2,3, Weiqi Jin1, and Kailiang Que2
Author Affiliations
  • 1MOE Key Laboratory of Photoelectric Imaging Technology and System, Beijing Institute of Technology, Beijing 100081, China
  • 2Baoding Galaxy Electronic Technology Co., Ltd., Baoding 071025, China
  • 3College of Electronic and Information Engineering, Hebei University, Baoding 071000, China
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    Figures & Tables(13)
    Schematic diagram of optical and mechanical structure for LiDAR using telescopic system
    Schematic diagram of optical and mechanical structure for warning LiDAR using single lens receiver
    Emission lens and receiving lens of coaxial LiDAR
    Emission and receiving fields of view for coaxial LiDAR
    Schematic diagram of overlapping field of view for coaxial LiDAR considering occlusion
    Simplified diagram of overlapping field of view for coaxial LiDAR
    Schematic diagram of spot energy distribution of fundamental mode Gaussian laser
    Response curve test principle and test site with light transmission hood and rotating mirror
    Response curve test principle and test site without light trans-mission hood and rotating mirror
    Normalized LiDAR response curve
    Normalized response curve simulated with different parameter settings
    • Table 1. Parameters for GL-1130 warning LiDAR

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      Table 1. Parameters for GL-1130 warning LiDAR

      ParameterValue
      Radius of emitting lens d/mm 5.75
      Radius of aperture R/mm 7
      Laser divergence angle(emission field of view) 2t/mrad 6
      Diameter of receiving lens D/mm 30
      Focal length of receiving lens f/mm 40
      Diameter of APD φ/mm 0.5
      Receiving field of view 2k = φ/f /mrad 13
    • Table 2. Measured data and simulation data of nor-malized LiDAR response curve

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      Table 2. Measured data and simulation data of nor-malized LiDAR response curve

      Distance h/mm Measured data Simulation data before correction Corrected simulation data Overlap factor
      0----
      2150.5331.0000.2500.084
      6530.7790.5620.9380.559
      8100.8590.4570.9910.726
      8950.9400.4131.0000.811
      9830.9750.3740.9980.894
      10961.0000.3320.9830.993
      13690.9950.2610.7791.000
      17390.8270.2070.6181.000
      23890.6350.1590.4751.000
      29690.5010.1370.4081.000
      40280.3380.1140.3411.000
      50520.2310.1020.3061.000
      62050.1660.0940.2811.000
      70470.1170.0900.2691.000
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    Jing Liu, Weiqi Jin, Kailiang Que. A dynamic range compression method for coaxial warning LiDAR based on overlap factor[J]. Infrared and Laser Engineering, 2023, 52(10): 20230027

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    Paper Information

    Category: Lasers & Laser optics

    Received: Jan. 13, 2023

    Accepted: --

    Published Online: Nov. 21, 2023

    The Author Email:

    DOI:10.3788/IRLA20230027

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