Infrared and Laser Engineering, Volume. 51, Issue 3, 20210204(2022)

Underwater imaging system of pulse modulated lidar

Guoquan Xu1, Guangying Li2, Jianwei Wan1, Ke Xu1, Guangyan Dong3, Guanghua Cheng4, Xing Wang2, Wenjie Han3, and Yanxin Ma5
Author Affiliations
  • 1College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China
  • 2State Key Laboratory of Ultrafast Diagnosis Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China
  • 3The 27th Research Institute of China Electronics Technology Group Corporation, Zhengzhou 450047, China
  • 4Center for Optical Imagery Analysis and Learning, Northwestern Polytechnical University, Xi’an 710072, China
  • 5College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, China
  • show less
    Figures & Tables(12)
    Composition of underwater 3D imaging extended range lidar
    Waveform of laser output
    Results of three filtering methods. (a) Mean filtering; (b) Mean filtering+ K-nearest neighbor smoothing filtering; (c) Mean filtering+ neighborhood average filtering
    Resolution target
    Imaging results at 20 meters in clear water environment. (a) 3D image; (b) Intensity image
    Statistical result and imaging result at 20 meters in clear water environment. (a) Statistical result; (b) 3D image
    Gain of different attenuation coefficients
    Intensity profiles at 5.9 m and 10.7 m in turbid water. (a) Intensity image without band-pass filter (5.9 m); (b) Intensity image with band-pass filter (10.7 m)
    Imaging result of target and iron plate
    Imaging results at 13 m in clear water environment. (a) 3D image; (b) Intensity image
    Imaging accuracy of target in clear water
    • Table 1. Key parameters of underwater 3D imaging lidar

      View table
      View in Article

      Table 1. Key parameters of underwater 3D imaging lidar

      ParametersValue
      Laser wavelength/nm532
      Laser pulse energy/mJ3.94
      Laser pulse width/ns12
      Pulse frequency/MHz478.5
    Tools

    Get Citation

    Copy Citation Text

    Guoquan Xu, Guangying Li, Jianwei Wan, Ke Xu, Guangyan Dong, Guanghua Cheng, Xing Wang, Wenjie Han, Yanxin Ma. Underwater imaging system of pulse modulated lidar[J]. Infrared and Laser Engineering, 2022, 51(3): 20210204

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: Lasers & Laser optics

    Received: Mar. 29, 2021

    Accepted: --

    Published Online: Apr. 8, 2022

    The Author Email:

    DOI:10.3788/IRLA20210204

    Topics