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Chinese Journal of Lasers, Volume. 46, Issue 8, 0810004(2019)

Laser Ranging System Based on High-Speed Pulse Modulation and Echo Sampling

Jianping Ma1, Jianhua Shang1、*, Jiatong Sun1, Yan He2, and Yuan Luo2
Author Affiliations
  • 1 School of Information Science and Technology, Donghua University, Shanghai 201620, China
  • 2 Research Center of Space Laser Information Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (13)
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    References (11)
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    Laser ranging system based on high-speed pulse modulation and echo sampling

    Fig. 1. Laser ranging system based on high-speed pulse modulation and echo sampling

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    Working principle and output signal of MPPC. (a) Working principle; (b) output signal

    Fig. 2. Working principle and output signal of MPPC. (a) Working principle; (b) output signal

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    Principle diagram of distance measurement based on multiple measurements and waveform accumulation

    Fig. 3. Principle diagram of distance measurement based on multiple measurements and waveform accumulation

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    Relationship between SNR and detection distance for laser ranging system

    Fig. 4. Relationship between SNR and detection distance for laser ranging system

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    Experimental prototype of laser ranging system

    Fig. 5. Experimental prototype of laser ranging system

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    Waveform of echo signal for long-distance measurement

    Fig. 6. Waveform of echo signal for long-distance measurement

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    Measurement results of 20 long-distance measuring tests

    Fig. 7. Measurement results of 20 long-distance measuring tests

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    Implementation of minimum detectable distance detection

    Fig. 8. Implementation of minimum detectable distance detection

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    Measurement results of 20 short-distance measuring tests

    Fig. 9. Measurement results of 20 short-distance measuring tests

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    Measurement results of 20 measuring tests

    Fig. 10. Measurement results of 20 measuring tests

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    Results of ranging accuracy test

    Fig. 11. Results of ranging accuracy test

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    • Table 1. Parameters of MPPC

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      Table 1. Parameters of MPPC

      ParameterValue
      Effective photosensitive area /(mm×mm)1.3×1.3
      Pixel pitch /μm25
      Number of pixels2668
      Fill factor /%47
      Spectral response range /nm350-1000
      Photon detection efficiency at 905 nm /%7
      Dark count /s-15×105
      Crosstalk probability /%6
      Gain1.1×106

    • Table 2. Technical parameters of laser ranging system

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      Table 2. Technical parameters of laser ranging system

      ItemParameterValue
      Wavelength /nm905
      Repetition frequency /kHz100
      LaserLaser peak power /W3
      Pulse width /ns6
      Divergence angle /mrad1.5
      Spot diameter /mm28×10
      Field of view /mrad2
      Receiving aperture /mm22
      Effective receiving aperture /mm1.3
      OpticalreceivingmoduleEfficiency of optical receiving module0.2
      Filter bandwidth /nm10
      Photon counting rate /MHz0.5-1.5
      Detection probability at 905 nm /%7
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    Jianping Ma, Jianhua Shang, Jiatong Sun, Yan He, Yuan Luo. Laser Ranging System Based on High-Speed Pulse Modulation and Echo Sampling[J]. Chinese Journal of Lasers, 2019, 46(8): 0810004

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    Paper Information

    Category: remote sensing and sensor

    Received: Mar. 7, 2019

    Accepted: Apr. 19, 2019

    Published Online: Aug. 13, 2019

    The Author Email: Shang Jianhua (jhshang@dhu.edu.cn)

    DOI:10.3788/CJL201946.0810004

    Topics

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