Chinese Journal of Lasers, Volume. 48, Issue 24, 2404001(2021)

Outdoor Experiments of Phase-Shift Laser Range Finder Technique Based on Optical Carrier Phase Modulation

Hongyu He1,2, Jianfeng Sun1、*, Zhiyong Lu1, Haisheng Cong1,2, Ronglei Han1,2, Weijie Ren1,2, Longkun Zhang1,2, Chaoyang Li1, and Yuxin Jiang1,2
Author Affiliations
  • 1Key Laboratory of Space Laser Communication and Detection Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
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    Figures & Tables(11)
    Block diagram of phase-shift laser range and velocity measurement finder based on optical carrier phase modulation
    Spectral peak of Sout(γ) varying with γ and its first order Fourier approximate when Am=Vπ/2, φr=0
    Acquired output signal of BD and driven signal of PM. (a) Output signal of BD; (b) driven signal of PM; (c)(d) corresponding enlarged views
    First order Fourier fit of P(γ)
    Calculated P(kπ/5), the model curve estimated by least square method and the calculated maximum obtained by the model
    Spectrum of output signal and the product signal. (a) Spectrum of the output signal of BD; (b) spectrum of Sout(γ) when γ=γmax
    Results of measuring static target at the distance of 75.5 m. (a) Measured distance; (b) measured velocity
    Results of measuring moving target (a pedestrian) at the distance of 71.5 m. (a) Measured distance; (b) measured velocity
    Photograph of the system looking at the sun directly
    • Table 1. Measured distance of different targets unit: m

      View table

      Table 1. Measured distance of different targets unit: m

      Distance of targetAVG of measured distanceRMSE of measured distance
      48.569.570.68
      7090.420.93
      132152.952.47
    • Table 2. RMS of noise of the system under different background light

      View table

      Table 2. RMS of noise of the system under different background light

      Background lightDirect look at the sunSunlight illuminates the targetNo sunlight
      RMS of noise /mV26.797726.515426.7838
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    Hongyu He, Jianfeng Sun, Zhiyong Lu, Haisheng Cong, Ronglei Han, Weijie Ren, Longkun Zhang, Chaoyang Li, Yuxin Jiang. Outdoor Experiments of Phase-Shift Laser Range Finder Technique Based on Optical Carrier Phase Modulation[J]. Chinese Journal of Lasers, 2021, 48(24): 2404001

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    Paper Information

    Category: Measurement and metrology

    Received: Mar. 11, 2021

    Accepted: May. 17, 2021

    Published Online: Nov. 16, 2021

    The Author Email: Sun Jianfeng (sunjianfengs@163.com)

    DOI:10.3788/CJL202148.2404001

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