MODTRAN4 version 2: radiative transfer modeling

Gail P. Anderson; Alexander Berk; Prabhat K. Acharya; Michael W. Matthew; Lawrence S. Bernstein; James H. Chetwynd Jr.; H. Dothe; Steven M. Adler-Golden; Anthony J. Ratkowski; Gerald W. Felde; James A. Gardner; Michael L. Hoke; Steven C. Richtsmeier; Laila S. Jeong

doi:10.1117/12.437035

20 August 2001 MODTRAN4 version 2: radiative transfer modeling

Gail P. Anderson, Alexander Berk, Prabhat K. Acharya, Michael W. Matthew, Lawrence S. Bernstein, James H. Chetwynd Jr., H. Dothe, Steven M. Adler-Golden, Anthony J. Ratkowski, Gerald W. Felde, James A. Gardner, Michael L. Hoke, Steven C. Richtsmeier, Laila S. Jeong

Author Affiliations +

Proceedings Volume 4381, Algorithms for Multispectral, Hyperspectral, and Ultraspectral Imagery VII; (2001) https://doi.org/10.1117/12.437035
Event: Aerospace/Defense Sensing, Simulation, and Controls, 2001, Orlando, FL, United States

Abstract

MODTRAN4, version 2, will soon be released by the U.S. Air Force Geophysics Laboratory; it is an extension of the MODTRAN4, v1, atmospheric transmission, radiance and flux model developed jointly by the Air Force Research Laboratory / Space Vehicles Directorate (AFRL / VS) and Spectral Sciences, Inc. The primary accuracy improvements in MODTRAN4 remain those previously published: (1) the multiple scattering correlated-k approach to describe the statistically expected transmittance properties for each spectral bin and atmospheric layer, and (2) the Beer-Lambert formulation that improves the treatment of path inhomogeneities. Version 2 code enhancements are expected to include: *pressure-dependent atmospheric profile input, as an auxiliary where the hydrostatic equation is integrated explicitly to compute the altitudes, *CFC cross-sections with band model parameters derived from pseudo lines, *additional pressure-induced absorption features from O₂, and *a new 5 cm^-1 band model option. Prior code enhancements include the incorporation of solar azimuth dependence in the DISORT-based multiple scattering model, the introduction of surface BRDF (Bi-directional Radiance Distribution Functions) models and a 15 cm^-1 band model for improved computational speed. Last year's changes to the HITRAN database, relevant to the 0.94 and 1.13 micrometers bands of water vapor, have been maintained in the MODTRAN4,v2 databases.

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Gail P. Anderson, Alexander Berk, Prabhat K. Acharya, Michael W. Matthew, Lawrence S. Bernstein, James H. Chetwynd Jr., H. Dothe, Steven M. Adler-Golden, Anthony J. Ratkowski, Gerald W. Felde, James A. Gardner, Michael L. Hoke, Steven C. Richtsmeier, and Laila S. Jeong "MODTRAN4 version 2: radiative transfer modeling", Proc. SPIE 4381, Algorithms for Multispectral, Hyperspectral, and Ultraspectral Imagery VII, (20 August 2001); https://doi.org/10.1117/12.437035

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