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Analysis of atmospheric transmittance based on FTIR spectra measurements
Author(s): 
Pages: 627-629
Year: Issue:  4
Journal: OPTICAL TECHNIQUE

Keyword:  红外辐射傅里叶变换两点温度校准透过率谱;
Abstract: 提出了一种利用FTIR光谱仪进行大气透过率测量的方法.通过黑体对系统的光谱响应进行标定,由两点温度校准得到测量光谱的辐射亮度谱.在一定的距离内实测并分析计算出了CO2红外吸收波段的大气透过率谱.采用非线性最小二乘方法将测量的CO2透过率谱与HITRAN数据库中的光谱拟合得到了干洁大气中的CO2浓度值.实验结果表明,该方法是测量大气透过率和定量分析气体组分的可行性方法.
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