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Chinese Journal of Lasers, Volume. 51, Issue 8, 0810002(2024)

Research on Automatic Driving Lidar Ranging Method Based on TDC

Huijuan Yu1,2, Yubing Wang1、*, Shuhua Zhao1,2, Mingshi Zhang1,2, Yue Song1, Cheng Qiu1, Yuxin Lei1, Peng Jia1, Lei Liang1, Li Qin1, and Lijun Wang1
Author Affiliations
  • 1State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, Jilin , China
  • 2College of Opto-Electronics, University of Chinese Academy of Sciences, Beijing 100049, China
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    Figures & Tables(13)
    Schematic of working mechanism of PhMCW ranging lidar. Insets: (a) Lidar system; (b) IF signal

    Fig. 1. Schematic of working mechanism of PhMCW ranging lidar. Insets: (a) Lidar system; (b) IF signal

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    Schematic of working mechanism of strict counting chain structure

    Fig. 2. Schematic of working mechanism of strict counting chain structure

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    Schematic of working mechanism of strict counting chain counter

    Fig. 3. Schematic of working mechanism of strict counting chain counter

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    Schematic of TDC module design principle

    Fig. 4. Schematic of TDC module design principle

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    Schematic of TDC performance test system

    Fig. 5. Schematic of TDC performance test system

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    Measurement results of test signals. (a) 200 ns signal; (b) 1000 ns signal

    Fig. 6. Measurement results of test signals. (a) 200 ns signal; (b) 1000 ns signal

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    Analysis of measurement results (pulse width of 6‒50 ns). (a) Test results with different pulse widths; (b) RMS

    Fig. 7. Analysis of measurement results (pulse width of 6‒50 ns). (a) Test results with different pulse widths; (b) RMS

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    Analysis of measurement results (pulse width of 100‒1240 ns). (a) Test results with different pulse widths; (b) RMS

    Fig. 8. Analysis of measurement results (pulse width of 100‒1240 ns). (a) Test results with different pulse widths; (b) RMS

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    Spectrogram analysis of measurement results. (a) Sampled data after processing by Hanning window function; (b) spectrum of measurement results

    Fig. 9. Spectrogram analysis of measurement results. (a) Sampled data after processing by Hanning window function; (b) spectrum of measurement results

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    Test result of frequency of FPGA switching power supply

    Fig. 10. Test result of frequency of FPGA switching power supply

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    Schematic diagram of lidar system

    Fig. 11. Schematic diagram of lidar system

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    Analysis of lidar system measurement results. (a) Experimental results versus distance; (b) RMS versus distance

    Fig. 12. Analysis of lidar system measurement results. (a) Experimental results versus distance; (b) RMS versus distance

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    Amplified standard pulsed signal captured by oscilloscope

    Fig. 13. Amplified standard pulsed signal captured by oscilloscope

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    Huijuan Yu, Yubing Wang, Shuhua Zhao, Mingshi Zhang, Yue Song, Cheng Qiu, Yuxin Lei, Peng Jia, Lei Liang, Li Qin, Lijun Wang. Research on Automatic Driving Lidar Ranging Method Based on TDC[J]. Chinese Journal of Lasers, 2024, 51(8): 0810002

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    Paper Information

    Category: remote sensing and sensor

    Received: Jul. 21, 2023

    Accepted: Sep. 4, 2023

    Published Online: Mar. 22, 2024

    The Author Email: Wang Yubing (wangyubing@ciomp.ac.cn)

    DOI:10.3788/CJL231050

    CSTR:32183.14.CJL231050

    Topics

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