研究一种测量污染气体(如SO₂,NO₂)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.