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Proceedings Paper

MODTRAN4: radiative transfer modeling for remote sensing
Author(s): 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; Brian Pukall; Jason B. Mello; Laila S. Jeong
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Paper Abstract

MODTRAN4, the newly released version of the U.S. Air Force atmospheric transmission, radiance and flux model is being developed jointly by the Air Force Research Laboratory/Space Vehicles Directorate and Spectral Sciences, Inc. It is expected to provide the accuracy required for analyzing spectral data for both atmospheric and surface characterization. These two quantities are the subject of satellite and aircraft campaigns currently being developed and pursued by, for instance: NASA (Earth Observing System), NPOESS (National Polar Orbiting Environmental Satellite System), and the European Space Agency (GOME--Global Ozone Monitoring Experiment). Accuracy improvements in MODTRAN relate primarily to two major developments: (1) the multiple scattering algorithms have been made compatible with the spectroscopy by adopting a corrected-k approach to describe the statistically expected transmittance properties for each spectral bin and atmospheric layer, and (2) radiative transfer calculations can be conducted with a Beer-Lambert formulation that improves the treatment of path inhomogeneities. Other 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 15 cm-1 band model for improved computational speed.

Paper Details

Date Published: 10 December 1999
PDF: 9 pages
Proc. SPIE 3866, Optics in Atmospheric Propagation and Adaptive Systems III, (10 December 1999); doi: 10.1117/12.371318
Show Author Affiliations
Gail P. Anderson, Air Force Research Lab. (United States)
Alexander Berk, Spectral Sciences, Inc. (United States)
Prabhat K. Acharya, Spectral Sciences, Inc. (United States)
Michael W. Matthew, Spectral Sciences, Inc. (United States)
Lawrence S. Bernstein, Spectral Sciences, Inc. (United States)
James H. Chetwynd Jr., Air Force Research Lab. (United States)
H. Dothe, Spectral Sciences, Inc. (United States)
Steven M. Adler-Golden, Spectral Sciences, Inc. (United States)
Anthony J. Ratkowski, Air Force Research Lab. (United States)
Gerald W. Felde, Air Force Research Lab. (United States)
James A. Gardner, Air Force Research Lab. (USA) and Univ. of Arizona (United States)
Michael L. Hoke, Air Force Research Lab. (United States)
Steven C. Richtsmeier, Spectral Sciences, Inc. (United States)
Brian Pukall, Air Force Research Lab. (United States)
Jason B. Mello, Air Force Research Lab. (United States)
Laila S. Jeong, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 3866:
Optics in Atmospheric Propagation and Adaptive Systems III
Anton Kohnle; John D. Gonglewski, Editor(s)

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