The intensity calculation of the gas absorption line by multi-line Voigt fitting

作     者：周孟然 李振璧 钟鸣宇 何刚 

作者机构：School of Electrical & Information EngineeringAnhui University of Science and TechnologyAnhui 232001China 

出 版 物：《Journal of Coal Science & Engineering(China)》 (煤炭学报（英文版）)

年 卷 期：2008年第14卷第4期

页      面：534-537页

学科分类：0810[工学-信息与通信工程] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 080402[工学-测试计量技术及仪器] 0835[工学-软件工程] 081002[工学-信号与信息处理] 

基　　金：the National Natural Science Foundation of China(50574005) Natural Science Foundation of Education Department of Anhui,China(2005KJ081) 

主　　题：coal mine gas absorption line intensity multi-line Voigt fitting spectrum survey 

摘      要：Adopted the distribution feedback type （DFB） laser to measure the coal mine gas methane, according to the methane located 1.6 μm nearby 2v3 with a R9 direct absorption spectrum, attraction wire intensity of each line was calculated through the multi-line Voigt fitting. The experimental result indicates that in the obtained four attraction recover of wire, the maximum deviation is 2.7%, and the minimum deviation is 0.02%, other results are all in experimental error scope. This research method may apply in the spectrum survey methane gas density, it has characteristics including high precision, strong selectivity, fast response and so on.