Mie-scattering Lidar System with a Solar-blind Wavelength for Atmospheric Boundary Layer

Mie-scattering Lidar System with a Solar-blind Wavelength for Atmospheric Boundary Layer
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大气边界层日盲波长米氏散射激光雷达系统

DOI:
10.1117/12.2586278
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发表时间:
2021-01
期刊:
FOURTH INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING
影响因子:
--
通讯作者:
Han Zhenyu
Han Zhenyu
中科院分区:
其他
文献类型:
--
作者:
Shao Jiangfeng;Hua Dengxin;Wang Li;Zhao Yixuan;Zhao Yan;Liu Zenghui;Cui Xinyue;Han Zhenyu

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利用Nd:YAG激光器产生的266nm波长、频率为10Hz的激光作为光源,研制了一套用于探测西安地区边界层高度的日盲激光雷达系统。进行了观测实验和分析,发现太阳背景光没有266nm波长,白天可以忽略其影响,从而可以实现全天探测。它可以在白天和夜间检测到。仅考虑臭氧对266nm波长的吸收。利用距离平方校正后的激光雷达信号的一阶导数和二阶导数的绝对最小值来反演边界层高度。根据白天和夜间的大气观测资料,得到北京地区大气边界层高度分别为0.44km和0.47km,并分析了气象因素和人类活动对大气边界层高度的影响。结果表明,该激光雷达能够满足对流层大气气溶胶粒子的实时探测要求,为西安地区大气环境监测提供了实用有效的数据。
A solar-blind lidar system is developed by using Nd:YAG laser to produce 266nm wavelength at the frequency of 10Hz as the light source to to detect the height of boundary layer in Xi'an area. The observation experiment and analysis are made.The solar background light has no 266nm wavelength and the influence of it can be ignored in the daytime, and then all day detection can be realized. It can be detected in the daytime and nighttime. The wavelength of 266nm absorbed by ozone is considered only. The absolute minimum of first derivative and second derivative of the range-squared-corrected lidar signal are employed to retrieve height of boundary layer. Based on the observation of atmosphere in daytime and nighttime, the heights of atmospheric boundary layer are 0.44km and 0.47km, and the influences of meteorological factors and human activities on the height of atmospheric boundary layer are analyzed. The results showed that the lidar can satisfied the need for detection of troposphere atmospheric aerosol particles at all time and are beneficial to offer practical and effective data for monitoring atmospheric environment in Xi'an aera.
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