Acta Photonica Sinica, Volume. 49, Issue 4, 0401002(2020)
Echo Signals Analysis of Side-scattering LiDAR under Different Wind Speed Conditions
The echo signals of the CCD side-scattering lidar under different wind speed conditions were analyzed. According to Mie scattering theory and CCD side-scattering LiDAR principle, the correlation between aerosol concentration and its side-scattering light intensity is determined. By considering the relationship between aerosol concentration and wind speed, the echo signals of side scatter lidar under different wind speed conditions are analyzed. By comparing the experiments under two conditions of axial fan wind and natural wind, it can be found that when the wind speed is in the range of 1~4.5 m/s, the aerosol concentration increases with the increasing of wind speed; otherwise when the wind speed is in the range of 4.5~6 m/s, the aerosol concentration decreases with the increasing of wind speed.Normalizing the results, conclusions are drawn that when the wind speed are in the range of 1~4.5 m/s, the side-scattering light intensity increase by 3.7% and 3.9% with the wind speeds increase by 1 m/s in the conditions of axial fan and natural wind. When the wind speedsare in the range of 4.5~ 6.0 m/s, the light intensity decreased by 3.1% and 3.8% with wind speeds increases by 1 m/s in the two conditions, and the trend exists in all wind coming directions of natural wind.
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Jia-qi SUN, Miao HU, Peng LI, Wen-di HE, Jun OU, Xue-fang ZHOU, Guo-wei YANG, Yang LU, Mei-hua BI. Echo Signals Analysis of Side-scattering LiDAR under Different Wind Speed Conditions[J]. Acta Photonica Sinica, 2020, 49(4): 0401002
Category: Atmospheric and Oceanic Optics
Received: Dec. 19, 2019
Accepted: Feb. 14, 2020
Published Online: Apr. 24, 2020
The Author Email: HU Miao (miao_hu@foxmail.com)