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Proceedings Paper

Line-by-line trace gas absorption model and its application for NDIR gas detection technology
Author(s): Jing Fang; WenQing Liu; TianShu Zhang; WeiWei Feng
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Paper Abstract

An accurate line-by-line trace gas absorption model is present in the paper. It is for mid-infrared band and can be used for the study and application of detecting trace gas (or pollution gas) in atmosphere. It is based on HITRAN molecular spectroscopic database. Spectral line shape, far wings, temperature correction and resolution are calculated. Infrared absorption characters of various gases in atmosphere can be simulated by the model. The algorithm details are described and the results calculated by the model are compared with that measured by Fourier transform infrared spectrometer. As an instance, model is applied for detector design of NDIR technology and the relationship between signal intensity of detectors and concentration of CO2/CO is simulated by the model. Available concentration range of detector is given by calculating results of the model.

Paper Details

Date Published: 27 November 2007
PDF: 5 pages
Proc. SPIE 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 67232S (27 November 2007); doi: 10.1117/12.783329
Show Author Affiliations
Jing Fang, Key Lab. of Environmental Optics and Technology (China)
WenQing Liu, Key Lab. of Environmental Optics and Technology (China)
TianShu Zhang, Key Lab. of Environmental Optics and Technology (China)
WeiWei Feng, Key Lab. of Environmental Optics and Technology (China)


Published in SPIE Proceedings Vol. 6723:
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Junhua Pan; James C. Wyant; Hexin Wang, Editor(s)

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