MAX-DOAS Tomography Reconstruction for Gas Plume

• Published in: Guang pu xue yu guang pu fen xi Vol. 35; no. 8; p. 2252
• Main Authors: Wei, Min-hong, Tong, Min-ming, Li, Su-wen, Xiao, Jian-yu
• Format: Journal Article
• Language: Chinese
• Published: China 01.08.2015
• ISSN: 1000-0593
• DOI: 10.3964/j.issn.1000-0593(2015)08-2252-05

In order to achieve precisely two-dimensional spatial distribution reconstruction of smoke plume, passive MAX-DOAS tomography is established, the measurement of the spatial distribution of the exhaust plume is implemented by more passive multi-axis differential absorption spectrum system. First, the multi-axis differential absorption spectrum system and its mechanism of inverse gas concentration are introduced in the paper. Then, algebra iterative algorithm is adopted to extract the information of the trace gas concentration in reconstruction simulation with different models and different scanning optical path, and the reconstruction program is designed. Then, the numerical simulation results are compared. Finally, a platform of multi-axis differential absorption optical tomography system is set up, a field campaign was carried out. The numerical simulation results show that the MAX-DOAS tomography can accurately reconstruct two-dimensional spatial distribution of plume model, the re- construction error of MA