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Acta Optica Sinica, Volume. 37, Issue 12, 1201003(2017)

Measurement Error of PM2.5 Concentration Based on Side Scattering Lidar

Song Chen, Miao Hu, Ran Zeng, Qiliang Li, Xuefang Zhou, Meiling Cai, Jialin Nie, and Yan’an Wang
Author Affiliations
  • School of Communication Engineering, Hangzhou Dianzi University, Hangzhou, Zhejiang 310018, China
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    Figures & Tables(5)
    Diagram of Clidar system setup

    Fig. 1. Diagram of Clidar system setup

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    Echo signal pseudo color images under different PM2.5 concentrations. (a) Low concentration; (b) normal concentration; (c) high concentration

    Fig. 2. Echo signal pseudo color images under different PM2.5 concentrations. (a) Low concentration; (b) normal concentration; (c) high concentration

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    Comparison of PM2.5 concentration derived from S(i) model with high gain and low gain and measured PM2.5 concentration. (a) i=0; (b) i=20; (c) i=40; (d) i=60; (e) i=80

    Fig. 3. Comparison of PM2.5 concentration derived from S(i) model with high gain and low gain and measured PM2.5 concentration. (a) i=0; (b) i=20; (c) i=40; (d) i=60; (e) i=80

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    • Table 1. Key technical parameters of Clidar system

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      Table 1. Key technical parameters of Clidar system

      ApparatusParameterValue
      CCD detector (Watec WAT-902H2)Pixel array /pixel×pixel768×576
      Pixel size /μm×μm12.7×9.8
      Minimum illumination /lx0.0001
      Angle per pixel /(°)0.117
      Lens (VM0410MPIR)Focal length /mm4-10
      Aperture number3.2
      Horizontal angle of view /(°)90
      Laser (Nd∶YVO4)Wavelength /nm532
      Pulse power /mW500
      Interference filter (ZLM-532ZDLGP-Y30)Bandwidth /nm5
      Peak transmittance /%80
      Image acquisition card (DH-CG300)--
      Computer (Dell-780MT)--

    • Table 2. Parameters of five models under high gain and low gain

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      Table 2. Parameters of five models under high gain and low gain

      ConditionLow gainHigh gain
      S(0)S(20)S(40)S(60)S(80)S(0)S(20)S(40)S(60)S(80)
      Empiricalformulaparameterk=1086,b=1635k=1022,b=-4777k=657,b=-4208k=442,b=-1515k=247,b=1274k=2770,b=39443k=2871,b=23419k=2927,b=-1921k=2801,b=-19350k=2393,b=-21193
      Average error /(μg·cm-3)4.455.407.548.298.463.302.973.253.845.05
      Residualvariance28.59389072.4489.2298.2419.7714.2116.3722.4540.08
      Comprehensivedeviation rate /%13.2416.2322.3324.1224.289.769.6310.5912.5416.16
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    Song Chen, Miao Hu, Ran Zeng, Qiliang Li, Xuefang Zhou, Meiling Cai, Jialin Nie, Yan’an Wang. Measurement Error of PM2.5 Concentration Based on Side Scattering Lidar[J]. Acta Optica Sinica, 2017, 37(12): 1201003

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    Paper Information

    Category: Atmospheric Optics and Oceanic Optics

    Received: May. 22, 2017

    Accepted: --

    Published Online: Sep. 6, 2018

    The Author Email:

    DOI:10.3788/AOS201737.1201003

    Topics

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