Low-Resolution Molecular Transmission Model For Atmospheric Water Vapor In LOWTRAN

Joseph H Pierluissi; Christos E Maragoudakis; Leopoldo A Gemoets

doi:10.1117/12.945761

10 August 1988 Low-Resolution Molecular Transmission Model For Atmospheric Water Vapor In LOWTRAN

Joseph H Pierluissi, Christos E Maragoudakis, Leopoldo A Gemoets

Proceedings Volume 0926, Optical, Infrared, Millimeter Wave Propagation Engineering; (1988) https://doi.org/10.1117/12.945761
Event: 1988 Technical Symposium on Optics, Electro-Optics, and Sensors, 1988, Orlando, FL, United States

Abstract

A 20 cm-1 resolution band model is presented for the calculation of water vapor molecular transmittance in the spectral region from the near infrared to zero frequency. It was developed for replacing the empirically-obtained, look-up transmission tables presently in LOWTRAN 6. The model consists of an exponential function whose exponent is expressed in terms of atmospheric pressure, temperature and absorber amount, as well as of four defining parameters. Of these parameters, only one is allowed to account for spectral variability over 5 cm^-1 spectral intervals. The model was developed using both FASCODE-generated transmittance data and laboratory measured spectra. The parameters are presented in tabular and graphical form. Comparisons are made between line-by-line calculations, LOWTRAN predictions, and new-model generated transmittance.

Citation Download Citation

Joseph H Pierluissi, Christos E Maragoudakis, and Leopoldo A Gemoets "Low-Resolution Molecular Transmission Model For Atmospheric Water Vapor In LOWTRAN", Proc. SPIE 0926, Optical, Infrared, Millimeter Wave Propagation Engineering, (10 August 1988); https://doi.org/10.1117/12.945761

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