2007•Fourier Transform Spectroscopy/ Hyperspectral Imaging and Sounding of the EnvironmentRequires access
A Fast Moderate-Spectral-Resolution Atmospheric Transmittance Model
Heli Wei, Xiuhong Chen, Ruizhong Rao, Yingjian Wang, Ping Yang
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Abstract
This paper reports on a new narrowband transmittance model with a spectral resolution of 1 cm−1 on the basis of the parameters fitted from the LBLRTM calculations. The mean transmittances within a spectral width of 1cm−1 are fitted for various values of absorber amount and a database of the fitting coefficients is obtained. A Curtis-Godson (C-G) approximation method is used to apply the model to an inhomogeneous atmosphere. The narrow band transmittance can be effectively computed on the basis of the fitting coefficients. The present method is extensively validated against LBLRTM in a spectral region spanning from 1 to 25000cm−1.