超光谱成像差分吸收光谱系统烟羽测量研究  

Determination of Plume by Hyperspectral Imaging Differential Optical Absorption Spectroscopy

作　　者：司福祺[1] 谢品华[1] 刘宇[1] 窦科[1] 徐晋[1] 刘文斌[1] 刘文清[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所环境光学与技术重点实验室,安徽合肥230031

出　　处：《光学学报》2009年第9期2458-2462,共5页Acta Optica Sinica

基　　金：国家863计划(2007AA12Z109);国家自然科学基金(40805015)资助课题

摘　　要：研究一种测量污染气体(如SO_2,NO_2)二维分布的光学遥感方法,即采用超光谱成像差分吸收光谱(DOAS)系统在扫描转台上对污染源排放烟羽进行扫描测量,利用被动差分吸收光谱处理方法对采集到太阳散射光谱进行处理获得柱浓度,结合转台扫描,最终实现污染气体的二维成像解析。着重描述了基于成像差分吸收光谱仪、紫外镜头及扫描转台的超光谱成像差分吸收系统,并利用该系统对热电厂烟羽排放进行了外场测量,该技术为污染源实时成像测量提供了一种简便的方法。An optical remote sensing method for measuring the air pollutants （such as SO2, NO2 ） emitted from sources is studied by use of a hyperspectral imaging differential optical absorption spectroscopy （DOAS） instrument to scan the plume from pollution source on a scan table. The column density of air pollutant is retrieved from processing of the scattered sun light spectra collected by the instrument by means of the spectral analysis method of passive DOAS. Combing with the scan table during the measurement, the map of trace gases can be estimated, The hyperspectral imaging differential optical absorption spectroscopy system consisted of imaging DOAS spectrometer, UV lens and scan table is described in detail, which was carried to scan the plume from a fossil power plant in a field measurement. This technique provides a simple and quick method for imaging the air pollutants.

关 键 词：测量 被动差分吸收光谱 成像光谱仪 烟羽 二维成像 

分 类 号：O433.4[机械工程—光学工程]