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Laser & Optoelectronics Progress, Volume. 60, Issue 20, 2028011(2023)

Research and Application of Denoising Algorithm for Mie Lidar Signal

Meng Zhang1,2, Xiaoli Zhang3, Zhao Jin2, Yang Liu2,4, and Yuan Hu1、*
Author Affiliations
  • 1State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, Anhui , China
  • 2Hefei Zhongke Environmental Monitoring Technology National Engineering Laboratory Co., Ltd., Hefei 230088, Anhui , China
  • 3Institutes of Physical Science and Information Technology, Anhui University, Hefei 230039, Anhui , China
  • 4Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, Anhui , China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (8)
    Equations (9)
    References (13)
    Cited By (2)
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    Figures & Tables(8)
    Extinction coefficient calculated before and after wavelet packet three-layer approximate reconstruction. (a) 20210305T192531; (b) 20210306T022505; (c) 20210307T033237; (d) 20210308T014010

    Fig. 1. Extinction coefficient calculated before and after wavelet packet three-layer approximate reconstruction. (a) 20210305T192531; (b) 20210306T022505; (c) 20210307T033237; (d) 20210308T014010

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    Extinction coefficient calculated before and after wavelet packet one-layer approximate reconstruction. (a) 20210305T192531; (b) 20210306T022505; (c) 20210307T033237; (d) 20210308T014010

    Fig. 2. Extinction coefficient calculated before and after wavelet packet one-layer approximate reconstruction. (a) 20210305T192531; (b) 20210306T022505; (c) 20210307T033237; (d) 20210308T014010

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    Retrieved extinction coefficient of the original data and variation of SNR with height

    Fig. 3. Retrieved extinction coefficient of the original data and variation of SNR with height

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    Retrieved extinction coefficient of the radar echo signal processed by segmented wavelet packet

    Fig. 4. Retrieved extinction coefficient of the radar echo signal processed by segmented wavelet packet

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    Results of Bump noisy signal processed by wavelet packet and segmented wavelet packet

    Fig. 5. Results of Bump noisy signal processed by wavelet packet and segmented wavelet packet

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    Results of Block noisy signal processed by wavelet packet and segmented wavelet packet

    Fig. 6. Results of Block noisy signal processed by wavelet packet and segmented wavelet packet

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    Pseudo-color maps of spatio-temporal distribution of the retrieved extinction coefficient. (a) Original image; (b) wavelet packet algorithm; (c) segmented wavelet packet algorithm

    Fig. 7. Pseudo-color maps of spatio-temporal distribution of the retrieved extinction coefficient. (a) Original image; (b) wavelet packet algorithm; (c) segmented wavelet packet algorithm

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    • Table 1. Data partitions based on SNR

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      Table 1. Data partitions based on SNR

      TimeNumber of sectionsCorresponding height of the critical point /m
      20210305T19253122287.5
      20210306T02250522340
      20210307T03323722430
      20210308T01401022715
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    Meng Zhang, Xiaoli Zhang, Zhao Jin, Yang Liu, Yuan Hu. Research and Application of Denoising Algorithm for Mie Lidar Signal[J]. Laser & Optoelectronics Progress, 2023, 60(20): 2028011

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    Paper Information

    Category: Remote Sensing and Sensors

    Received: Nov. 11, 2022

    Accepted: Dec. 7, 2022

    Published Online: Oct. 13, 2023

    The Author Email: Hu Yuan (yuanhu@ustc.edu.cn)

    DOI:10.3788/LOP223031

    Topics

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