Upgraded Line-of-Sight Geometry Package and Band Model Parameters for MODTRAN

Abstract

The MODTRAN atmospheric transmittance and radiance code was upgraded with new band model parameters calculated using the HITRAN-92 line atlas. The (1/d) band model parameters for O sub 3 were adjusted to give better agreement with the corresponding line-by-line FASCOD3 calculations for long paths in the 20-50 km altitude region. More accurate line-of-sight (LOS) geometry routines were incorporated for greater consistency between the geometry parameters. Furthermore, MODTRAN can now handle very short slant paths down to 0.001 km.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1993
Accession Number
ADA280952

Entities

People

  • A. Berk
  • D. C. Robertson
  • P. K. Acharya

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Absorption
  • Absorption Coefficients
  • Abstracts
  • Accuracy
  • Agreements
  • Air Force
  • Altitude
  • Atmospheric Refraction
  • Consistency
  • Convergence
  • Equations
  • Geometry
  • Line Of Sight
  • Precision
  • Radiance
  • Refraction
  • Transmittance

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Spectroscopy.