利用近场多波长激光雷达对生物气溶胶的偏振测量

大气与环境光学学报 ›› 2018, Vol. 13 ›› Issue (1): 52-58.

利用近场多波长激光雷达对生物气溶胶的偏振测量

杨辉1, 赵雪松2, 孙彦飞1, 王铁栋1, 宗军君1, 庆丰1

(1中国人民解放军陆军军官学院, 安徽合肥 230031;
2中国科学院安徽光学精密机械研究所，安徽合肥 230031)

收稿日期:2016-09-30 修回日期:2016-10-19 出版日期:2018-01-28 发布日期:2018-02-06
通讯作者: 杨辉(1974- ) , 男, 四川德阳人, 副教授, 博士, 主要从事生物战剂（气溶胶）、激光雷达和大气环境监测等方面的研究。 E-mail:sanpedroman@163.com
作者简介:杨辉(1974- ) , 男, 四川德阳人, 副教授, 博士, 主要从事生物战剂（气溶胶）、激光雷达和大气环境监测等方面的研究。
基金资助:
Supported by National Natural Science Foundation of China(国家自然科学基金,41375026）

Bioaerosols Polarization Measurement by Short-Range Multi-Wavelength Lidar

YANG Hui1, ZHAO Xuesong2, SUN Yanfei1, WANG Tiedong1, ZONG Junjun1, QING Feng1

(1 Army Officer Academy of PLA, Hefei 230031, China;
2 Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China

Received:2016-09-30 Revised:2016-10-19 Published:2018-01-28 Online:2018-02-06
Contact: 杨辉(1974- ) , 男, 四川德阳人, 副教授, 博士, 主要从事生物战剂（气溶胶）、激光雷达和大气环境监测等方面的研究。 E-mail:sanpedroman@163.com
About author:杨辉(1974- ) , 男, 四川德阳人, 副教授, 博士, 主要从事生物战剂（气溶胶）、激光雷达和大气环境监测等方面的研究。
Supported by:
Supported by National Natural Science Foundation of China(国家自然科学基金,41375026）

摘要/Abstract

摘要：

基于非球形粒子偏振特性，设计并试制了近场偏振激光雷达。该系统包含二个激光光源和退偏组件，激光束的线偏振度为1/500，偏振和弹性散射信号由孔径200 mm的卡塞格林望远镜接收。在一个半封闭的生物气溶胶腔里，对10种生物气溶胶，按355, 532, 1064 nm的顺次进行线偏振测量。数据分析结果表明，退偏比表现出较强的波长依赖性; 利用欧氏相关度和马哈拉诺比斯距离，可以确定多波长线偏数据的差异，并对生物气溶胶进行分辨。

关键词: 生物气溶胶, 多波长, 激光雷达, 退偏振比, 马哈拉诺比斯距离

Abstract:

Based on polarization characteristics of non-spherical particles, a short range lidar system for real-time standoff detection of bioaerosols was developed. The system includes two laser sources and depolarization components. Linear polarization purity of the laser beam is 1/500, the polarization and elastic scattering signals are collected by a Cassegrainian telescope. In a semi-closed bioaerosol chamber, 10 kinds of bioaerosol were mixed and interrogated by 355, 532, 1064 nm laser beam sequently. Linear polarization measurements were performed. The results showed that the depolarization ratios are wavelength-dependent, and the identification of bioaerosols can be achieved through the application of Euclidian correlation degree and Mhalanobis distance.

Key words: bioaerosols, multi-wavelength, lidar, depolarization ratio, Mahalanobis distance

中图分类号:

TN247

杨辉赵雪松孙彦飞王铁栋宗军君庆丰. 利用近场多波长激光雷达对生物气溶胶的偏振测量[J]. 大气与环境光学学报, 2018, 13(1): 52-58.

YANG Hui, DIAO Xue-Song, SUN Yan-Fei, WANG Tie-Dong, ZONG Jun-Jun, QING Feng. Bioaerosols Polarization Measurement by Short-Range Multi-Wavelength Lidar[J]. Journal of Atmospheric and Environmental Optics, 2018, 13(1): 52-58.

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