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FTIR光谱拟合方法在反演气体浓度中的应用
引用本文:朱军,刘文清,刘建国,高闽光,赵雪松,张天舒,徐亮.FTIR光谱拟合方法在反演气体浓度中的应用[J].光谱学与光谱分析,2005,25(10):1573-1576.
作者姓名:朱军  刘文清  刘建国  高闽光  赵雪松  张天舒  徐亮
作者单位:1. 中国科学院安徽光学精密机械研究所,安徽,合肥,230031;安徽大学电子科学与技术学院,安徽,合肥,230039
2. 中国科学院安徽光学精密机械研究所,安徽,合肥,230031
基金项目:国家自然科学基金项目(10274080)和安徽省高校优秀中青年骨干教师项目资助
摘    要:研究用FTIR光谱测量系统反演气体浓度的方法,在WINDOWS操作系统下应用非线性最小二乘拟合算法实现了CO气体的定量分析。在FTIR光谱拟合中,使用HITRAN数据库中的光谱作为校准训练集,使测量的CO红外透过率谱与计算的参考光谱达到最佳拟合得到了该气体的浓度,反演结果的绝对准确度达到1%~5%。

关 键 词:红外傅里叶变换  非线性最小二乘算法  透过率谱  浓度反演
文章编号:1000-0593(2005)10-1573-04
收稿时间:2004-03-28
修稿时间:2004-06-26

Application of FTIR Spectra Fitting Method in Retrieving Gas Concentrations
ZHU Jun,LIU Wen-qing,LIU Jian-guo,GAO Min-guang,ZHAO Xue-song,ZHANG Tian-shu,XU Liang.Application of FTIR Spectra Fitting Method in Retrieving Gas Concentrations[J].Spectroscopy and Spectral Analysis,2005,25(10):1573-1576.
Authors:ZHU Jun  LIU Wen-qing  LIU Jian-guo  GAO Min-guang  ZHAO Xue-song  ZHANG Tian-shu  XU Liang
Institution:1. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China ;2. Institute of Electronic Science and Technology, Anhui University, Hefei 230039, China
Abstract:The method of retrieving gas concentrations by FTIR spectra measurement system is studied. NLLS fitting algorithm is used to complete the quantitative analysis of CO gas under WINDOWS operating system. The spectra of HITRAN database is employed as calibrating and training sets during the procedure of fitting FTIR spectrum. The measured IR transmittance spectra of CO are best fitted with the calculated spectra in HITRAN. The CO concentrations are acquired after the best fitting. The absolute accuracy of the results of retrieve achieves 1%-5 %.
Keywords:FTIR  NLLS algorithm  Transmittance spectrum  Retrieving concentrations
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