NO_(2)差分吸收激光雷达技术研究进展  

Research progress of NO_(2) differential absorption lidar technology

作　　者：成远 张振 华灯鑫 宫振峰[1] 梅亮 CHENG Yuan;ZHANG Zhen;HUA Dengxin;GONG Zhenfeng;MEI Liang(School of Optoelectronic Engineering and Instrumentation Science,Dalian University of Technology,Dalian 116024,China;School of Mechanical and Precision Instrument Engineering,Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]大连理工大学光电工程与仪器科学学院,辽宁大连116024 [2]西安理工大学机械与精密仪器工程学院,陕西西安710048

出　　处：《量子电子学报》2021年第5期580-592,共13页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金,62075025。

摘　　要：二氧化氮(NO_(2))是一种重要的大气污染物,严重危害人体健康以及生态系统,实现NO_(2)浓度空间分布探测对大气环境监测与治理具有重要意义。作为一种主动式光学遥感探测技术,差分吸收激光雷达(DIAL)技术可实现大气痕量气体水平和垂直空间分布探测、高架源排放气体监测等,在大气环境监测领域具有重要应用价值。DIAL技术通过可调谐激光器向大气中交替发射两束波长相近的激光,一束激光的波长位于待测气体吸收峰(λ_(on)),另一束激光的波长偏离待测气体吸收峰(λ_(off))。根据待测气体对波长为λ_(on)和λ_(off)的激光的吸收程度不同,可通过分析大气后向散射信号的比值从而获得待测气体浓度。详细介绍了NO_(2)-DIAL技术的基本理论及测量误差,并系统性地回顾了NO_(2)-DIAL技术的发展历程,最后对NO_(2)-DIAL技术进行了总结和展望。Nitrogen dioxide(NO_(2))is an important atmospheric pollutant that seriously threats human health and ecosystems.Therefore,the detection of the spatial distribution of NO2 concentration is of great significance for atmospheric environmental monitoring and management.As an active optical remote sensing detection technology,differential absorption lidar(DIAL)technology can realize the detection of horizontal and vertical spatial distribution for atmospheric trace gases and the monitoring of emissions from elevated sources,which has great application value in the field of atmospheric environmental monitoring.DIAL technology uses a tunable laser to alternately emit two laser beams with similar wavelengths into the atmosphere.The wavelength of one laser beam is on the absorption peak of the gas to be measured(λ_(on)),and the other deviates from the absorption peak of the gas(λ_(off)).According to the different absorption at the two wavelengths,the concentration of the target gas can be evaluated from the ratio of the atmospheric backscatter signals aton andoff.The basic principle and measurement error of NO_(2)-DIAL technology are introduced in detail,the recent advancement of NO_(2)-DIAL technology is systematically reviewed.And finally,the research on NO_(2)-DIAL technology is summarized and prospected.

关 键 词：大气光学 二氧化氮 差分吸收激光雷达 染料激光器 二极管激光器 沙氏成像原理 

分 类 号：O439[机械工程—光学工程]