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Proceedings Paper

Assessment Of Operational Techniques For Estimating Visible Spectrum Contrast Transmittance
Author(s): Wayne S. Hering
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Paper Abstract

Approximate solutions appropriate for real time calculations of directional path radiance and atmospheric contrast transmittance were developed and tested using an extensive data base gathered with a specially instrumented aircraft. The high-resolution, simultaneous optical and meteorological measurements were made in a broad range of environmental conditions and diverse geographical areas in the United States and western Europe. Modelling techniques based upon these data yield computationally fast and consistent results of reasonable accuracy. The effects of the natural variations in environmental physical parameters upon the calculations of spectral contrast transmittance are examined through systematic application of the modelling techniques. Comparative analyses are made of the changes in the visible spectrum contrast transmittance associated with typical changes in some of the relevant parameters such as the depth and density of the low-level haze layer, aerosol absorption, surface spectral reflectance, solar zenith angle and viewing path.

Paper Details

Date Published: 30 December 1981
PDF: 7 pages
Proc. SPIE 0305, Atmospheric Effects on Electro-Optical, Infrared, and Millimeter Wave Systems Performance, (30 December 1981); doi: 10.1117/12.932704
Show Author Affiliations
Wayne S. Hering, University of California (United States)

Published in SPIE Proceedings Vol. 0305:
Atmospheric Effects on Electro-Optical, Infrared, and Millimeter Wave Systems Performance
Richard Gomez, Editor(s)

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