Reformulation of the MODTRAN band model for higher spectral resolution

Alexander Berk; Prabhat K. Acharya; Lawrence S. Bernstein; Gail P. Anderson; James H. Chetwynd Jr.; Michael L. Hoke

doi:10.1117/12.410340

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23 August 2000 Reformulation of the MODTRAN band model for higher spectral resolution

Alexander Berk, Prabhat K. Acharya, Lawrence S. Bernstein, Gail P. Anderson, James H. Chetwynd Jr., Michael L. Hoke

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Proceedings Volume 4049, Algorithms for Multispectral, Hyperspectral, and Ultraspectral Imagery VI; (2000) https://doi.org/10.1117/12.410340
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

The MODTRAN 1 cm-1 band model has been reformulated for application to higher spectral resolution. Molecular line center absorption is still determined from finite spectral bin equivalent widths but is now partitioned between the bin containing the molecular transition and its nearest neighbor bin. Also, the equivalent width calculation has been upgraded to retain to maintain high accuracy at the increased spectral resolution. The MODTRAN Lorentz line tail spectral bin absorption coefficient data has been replaced by a more general and accurate Pad? approximant for Voigt line tails, and higher order pressure dependencies are now modeled. Initial comparisons to the FASE model and to measurement data are presented.

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Alexander Berk, Prabhat K. Acharya, Lawrence S. Bernstein, Gail P. Anderson, James H. Chetwynd Jr., and Michael L. Hoke "Reformulation of the MODTRAN band model for higher spectral resolution", Proc. SPIE 4049, Algorithms for Multispectral, Hyperspectral, and Ultraspectral Imagery VI, (23 August 2000); https://doi.org/10.1117/12.410340

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