title: [Investigation on remote measurement of air pollution by a method of infrared passive scanning imaging].
abstract: Passive remote sensing by Fourier-transform infrared (FTIR) spectrometry allows detection of air pollution. However, for the localization of a leak and a complete assessment of the situation in the case of the release of a hazardous cloud, information about the position and the distribution of a cloud is essential. Therefore, an imaging passive remote sensing system comprising an interferometer, a data acquisition and processing software, scan system, a video system, and a personal computer has been developed. The remote sensing of SF6 was done. The column densities of all directions in which a target compound has been identified may be retrieved by a nonlinear least squares fitting algorithm and algorithm of radiation transfer, and a false color image is displayed. The results were visualized by a video image, overlaid by false color concentration distribution image. The system has a high selectivity, and allows visualization and quantification of pollutant clouds.
authors.affiliation: Key Lab of Environment Optics & Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China. yjiao@aiofm.ac.cn
authors.forename: Yang
authors.initials: Y
authors.lastname: Jiao
authors.forename: Liang
authors.initials: L
authors.lastname: Xu
authors.forename: Min-Guang
authors.initials: MG
authors.lastname: Gao
authors.forename: Ming-Chun
authors.initials: MC
authors.lastname: Feng
authors.forename: Ling
authors.initials: L
authors.lastname: Jin
authors.forename: Jing-Jing
authors.initials: JJ
authors.lastname: Tong
authors.forename: Sheng
authors.initials: S
authors.lastname: Li