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Chinese Journal of Lasers, Volume. 44, Issue 9, 910001(2017)

Parameter Design and Performance Analysis of Lidar System for Thermospheric Helium

Cai Yunyun1,2、*, Sun Dongsong1,2, Xue Xianghui1,2, Zheng Jun1,2, Lan Jiaxin1,2, Li Zimu1,2, Zhang Nannan1,2, and Dou Xiankang1,2
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    AbstractGet PDF(in Chinese)
    Figures&Tables (10)
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    References (12)
    Cited By (3)
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    Figures & Tables(10)
    Energy diagram for the lower levels of He atom

    Fig. 1. Energy diagram for the lower levels of He atom

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    Density distribution model of metastable He with height in the best/worst seasons and solar conditions

    Fig. 2. Density distribution model of metastable He with height in the best/worst seasons and solar conditions

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    Effective backscatter cross section for the 1083 nm lines

    Fig. 3. Effective backscatter cross section for the 1083 nm lines

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    Schematic setup of the He lidar system

    Fig. 4. Schematic setup of the He lidar system

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    Circuit principle schematic of He cell

    Fig. 5. Circuit principle schematic of He cell

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    Simulated receiving signal with different system parameters. (a) He(23S) density; (b) integration time; (c) range bin

    Fig. 6. Simulated receiving signal with different system parameters. (a) He(2 3 S) density; (b) integration time; (c) range bin

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    Distribution of relative error for He density detection

    Fig. 7. Distribution of relative error for He density detection

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    Distribution of receiving SNR of He lidar system

    Fig. 8. Distribution of receiving SNR of He lidar system

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    • Table 1. Transition characteristics of metastable He resonance emission lines

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      Table 1. Transition characteristics of metastable He resonance emission lines

      Emission lines1083.034 nm1083.025 nm1082.908 nm388.9 nm311.8 nm
      g2g1A21 /(10 7 s -1 ) t21 /(10 -8 s) g5 3 1.022 9.785 16.83 3 1.022 9.785 16.81 3 1.022 9.785 16.89 3 0.948 10.55 0.19 3 0.564 17.73 Small

    • Table 2. Parameters design of He lidar system

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      Table 2. Parameters design of He lidar system

      ParameterValue
      Laser power /W Integration time /min Resolution range /km Telescope diameter /m One-way atmosphere transmission Chopper efficiency Filter bandwidth /nm Bandwidth of ultra narrow band filter /GHz Transmission of ultra narrow band filter PMT quantum efficiency Optical fiber efficiency40 30 50 1.2 85% 95% 1 1 80% 30% 85%
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    Cai Yunyun, Sun Dongsong, Xue Xianghui, Zheng Jun, Lan Jiaxin, Li Zimu, Zhang Nannan, Dou Xiankang. Parameter Design and Performance Analysis of Lidar System for Thermospheric Helium[J]. Chinese Journal of Lasers, 2017, 44(9): 910001

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    Paper Information

    Category: Remote Sensing and Sensors

    Received: Mar. 10, 2017

    Accepted: --

    Published Online: Sep. 7, 2017

    The Author Email: Yunyun Cai (caiyy789@mail.ustc.edu.cn)

    DOI:10.3788/CJL201744.0910001

    Topics

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