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Acta Optica Sinica, Volume. 41, Issue 6, 0601003(2021)

Numerical Modeling and Simulation Analysis of Coherent Wind Lidar

Xiaomei Jin1,2, Wenyue Zhu1,2, Qing Liu1,2,3、*, and Yehui Chen1,2,3,4
Author Affiliations
  • 1Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei, Anhui 230031, China
  • 2Advanced Laser Technology Laboratory of Anhui Province, Hefei, Anhui 230037, China
  • 3Science Island Branch of Graduate School, University of Science and Technology of China, Hefei, Anhui 230026, China
  • 4Electronic Communications Engineering College, Anhui Xinhua University, Hefei, Anhui 230088, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (16)
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    References (25)
    Cited By (3)
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    Figures & Tables(16)
    Block diagram of coherent wind lidar system

    Fig. 1. Block diagram of coherent wind lidar system

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    Simulation block diagram of coherent wind lidar system

    Fig. 2. Simulation block diagram of coherent wind lidar system

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    Diagram of fiber laser model structure

    Fig. 3. Diagram of fiber laser model structure

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    Simulation structure diagram of major devices. (a) AOM; (b) fiber amplifier

    Fig. 4. Simulation structure diagram of major devices. (a) AOM; (b) fiber amplifier

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    Simulation structure diagram of atmospheric transmission module

    Fig. 5. Simulation structure diagram of atmospheric transmission module

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    Simulation structure diagram of photoelectric conversion module

    Fig. 6. Simulation structure diagram of photoelectric conversion module

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    Simulation structure diagram of data acquisition and processing module

    Fig. 7. Simulation structure diagram of data acquisition and processing module

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    Simulated results of echo signal distribution under a single pulse. (a) HPE-LPRF; (b) LPE-HPRF

    Fig. 8. Simulated results of echo signal distribution under a single pulse. (a) HPE-LPRF; (b) LPE-HPRF

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    Comparison between SNR of echo signal and theoretical SNR. (a) HPE-LPRF; (b) LPE-HPRF

    Fig. 9. Comparison between SNR of echo signal and theoretical SNR. (a) HPE-LPRF; (b) LPE-HPRF

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    Normalized intensity distribution of echo signal

    Fig. 10. Normalized intensity distribution of echo signal

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    Velocity inversion estimation in constant wind speed. (a) Single pulse; (b) multi-pulse accumulation average in 0.1 s

    Fig. 11. Velocity inversion estimation in constant wind speed. (a) Single pulse; (b) multi-pulse accumulation average in 0.1 s

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    Normalized power spectral distribution at 900 m. (a) Single pulse; (b) multi-pulse accumulation average in 0.1 s

    Fig. 12. Normalized power spectral distribution at 900 m. (a) Single pulse; (b) multi-pulse accumulation average in 0.1 s

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    Velocity inversion estimation in NASA model. (a) Single pulse; (b) multi-pulse accumulation average in 0.1 s

    Fig. 13. Velocity inversion estimation in NASA model. (a) Single pulse; (b) multi-pulse accumulation average in 0.1 s

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    • Table 1. Main technical parameters of system simulation

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      Table 1. Main technical parameters of system simulation

      CategoryParameterHPE-LPRFLPE-HPRF
      Wavelength1550 nm1550 nm
      Mean power1 W1 W
      Fiber laserPulse energy2 mJ100 μJ
      Pulse duration300 ns300 ns
      Pulse repetition frequency500 Hz10 kHz
      Relative intensity-160 dB-160 dB
      TelescopeAperture150 mm
      Balanced detector3 dB bandwidth200 MHz
      Responsivity1.0 A/W
      Simulation settingSampling rate400 MHz
      Detection distance3 km

    • Table 2. Results of simulation experiment in constant wind speed

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      Table 2. Results of simulation experiment in constant wind speed

      Simulation time /sNumber of pulses inincoherent accumulationMSE between estimated wind speed andspecified wind speed /(m·s-1)
      HPE-LPRFLPE-HPRFHPE-LPRFLPE-HPRF
      2×10-312047.97612.79
      1×10-251001.0113.81
      0.15010000.930.75

    • Table 3. Results of simulation experiment in NASA model

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      Table 3. Results of simulation experiment in NASA model

      Simulation time /sNumber of pulses inincoherent accumulationMSE between estimated wind speed andspecified wind speed /(m·s-1)
      HPE-LPRFLPE-HPRFHPE-LPRFLPE-HPRF
      2×10-3120238.22903.42
      1×10-251001.4712.82
      0.15010001.251.03
      0.210020001.241.06
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    Xiaomei Jin, Wenyue Zhu, Qing Liu, Yehui Chen. Numerical Modeling and Simulation Analysis of Coherent Wind Lidar[J]. Acta Optica Sinica, 2021, 41(6): 0601003

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    Paper Information

    Category: Atmospheric Optics and Oceanic Optics

    Received: Jul. 6, 2020

    Accepted: Nov. 9, 2020

    Published Online: Apr. 7, 2021

    The Author Email: Liu Qing (liuqing@aiofm.ac.cn)

    DOI:10.3788/AOS202141.0601003

    Topics

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