机载近红外偏振激光雷达探测过冷云研究

doi:10.3969/j.issn.1007-5461.2021.06.016

量子电子学报 ›› 2021, Vol. 38 ›› Issue (6): 872-879.doi: 10.3969/j.issn.1007-5461.2021.06.016

机载近红外偏振激光雷达探测过冷云研究

李仕春1,2∗ , 黄祖鑫1 , 石东东1 , 辛文辉1,2 , 宋跃辉1,2 , 高飞1,2 , 华灯鑫1,2∗

1 西安理工大学机械与精密仪器工程学院, 陕西西安 710048; 2 西安理工大学现代装备绿色制造协同创新中心, 陕西西安 710048

收稿日期:2020-08-28 修回日期:2021-01-05 出版日期:2021-11-28 发布日期:2021-11-28
通讯作者: E-mail: lsczqz@xaut.edu.cn; dengxinhua@xaut.edu.cn E-mail:E-mail: lsczqz@xaut.edu.cn; dengxinhua@xaut.edu.cn
作者简介: 李仕春 ( 1979 - ), 山东莱西人, 博士, 副教授, 硕士生导师, 主要从事激光雷达大气探测方面的研究。 E-mail: lsczqz@xaut.edu.cn
基金资助:
Supported by National Natural Science Foundation of China (国家自然科学基金, 61875162, 41627807), Natural Science Foundation of Shaanxi Province of China (陕西省自然科学基金, 2020JM-445), Key Program of Natural Science Foundation of Education Department of Shaanxi (陕西省教育厅自然科学基金重点项目, 20JY048)

Investigation on airborne near-infrared polarization lidar for probing supercooled cloud

LI Shichun 1,2∗ , HUANG Zuxin 1 , SHI Dongdong 1 , XIN Wenhui 1,2 , SONG Yuehui 1,2 , GAO Fei 1,2 , HUA Dengxin 1,2∗

1 School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China; 2 Collaborative Innovation Centre for Modern-equipment Environmentally-Conscious Manufacturing, Xi’an University of Technology, Xi’an 710048, China

Received:2020-08-28 Revised:2021-01-05 Published:2021-11-28 Online:2021-11-28

摘要/Abstract

摘要： 针对过冷云分布的探测, 设计了一种近红外机载偏振同轴微脉冲激光雷达系统。该系统采用波长 1550 nm 激光激励, 可有效减少云中小尺度气溶胶粒子的消光, 从而提高大尺度云粒子的探测距离和效率。通过非球形粒子的退偏比来甄别云粒子相态, 同时提出了云含水量的激光雷达反演算法, 并结合机载温度数据和对流层特征, 反演过冷云的空间分布。基于标准大气模型和机载仪器的云粒子谱数据, 仿真分析了不同激励波长偏振微脉冲激光雷达在两种对流层云中的探测性能, 结果表明下层云中的探测距离约为 1.1 km, 而上层云中的探测距离可达 1.5 km。

关键词: 大气光学, 机载偏振激光雷达, 过冷云分布, 近红外激光遥感, 云含水量

Abstract: Aiming at the probe of atmospheric supercooled cloud distribution, an airborne polarization coaxial micro-pulse lidar in near-infrared wavelength is developed. The system utilizes a 1550 nm wavelength laser as exciting light to reduce the extinction effect of small-scale aerosol particles in the cloud, hence improving greatly the detection range and the efficiency of large-scale cloudy particles. The phase state of cloud particle is discriminated by particle depolarization ratio, and the cloudy moisture content is obtained by the proposed lidar retrieval algorithm. Then, combining the airborne temperature data and the tropospheric characteristics, the spatial distribution of supercooled cloud can be retrieved. Based on the standard atmospheric model and the cloud particle spectra from the airborne in situ instruments, the detection performance of the polarization lidar with the different wavelengths in two kinds of tropospheric clouds is simulated and analyzed. The results show that the detection range is about 1.1 km for the lower cloud, whereas the range is up to 1.5 km for the upper cloud.

Key words: atmospheric optics, airborne polarization lidar, supercooled cloud distribution, near-infrared laser remote sensing, cloudy moisture content

中图分类号:

P481

李仕春, ∗, 黄祖鑫, 石东东, 辛文辉, 宋跃辉, 高飞, 华灯鑫, ∗. 机载近红外偏振激光雷达探测过冷云研究[J]. 量子电子学报, 2021, 38(6): 872-879.

LI Shichun , ∗ , HUANG Zuxin , SHI Dongdong , XIN Wenhui , , SONG Yuehui , , GAO Fei , , HUA Dengxin , ∗. Investigation on airborne near-infrared polarization lidar for probing supercooled cloud[J]. Chinese Journal of Quantum Electronics, 2021, 38(6): 872-879.

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机载近红外偏振激光雷达探测过冷云研究

Investigation on airborne near-infrared polarization lidar for probing supercooled cloud

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