1. Anhui Institute of Optics and Fine Mechanics，Chinese Academy of Sciences, Hefei 230031, China 2. University of Science and Technology of China, Hefei 230001, China
Abstract：The principle and techniques of passive remote sensing of gaseous pollutant in heated plume was illustrated and discussed in this paper. The algorithm of radiance spectra and transmittance spectra in measured region was proposed，and the method of retrieving gas concentrations with NLLS fitting algorithm was also proposed. The remote senseing of actual gaseous pollutant of smokestack was done, and the quantitative analysis of SO2 and CO2 was completed.
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