Absorption spectroscopy about area nocuous gas explorer

Article dissertates the basic theory that how absorption spectroscopy is used in the long-distance nocuous gas intrusion exploration. It discusses about the technology of differential optical absorption spectroscopy (DOAS). It is put forward the actualization method of the nocuous gas detection in the long-distance area. It is introduced how the atmospheric trace intrusion gas is detected with the beam of wide spectrum light, a series of optical apparatus and DOAS computing. Also, the potential technologies and instrument in the future are prospected.