Assessment Of Operational Techniques For Estimating Visible Spectrum Contrast Transmittance

Wayne S. Hering

doi:10.1117/12.932704

30 December 1981 Assessment Of Operational Techniques For Estimating Visible Spectrum Contrast Transmittance

Wayne S. Hering

Proceedings Volume 0305, Atmospheric Effects on Electro-Optical, Infrared, and Millimeter Wave Systems Performance; (1981) https://doi.org/10.1117/12.932704
Event: 25th Annual Technical Symposium, 1981, San Diego, United States

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.

Citation Download Citation

Wayne S. Hering "Assessment Of Operational Techniques For Estimating Visible Spectrum Contrast Transmittance", Proc. SPIE 0305, Atmospheric Effects on Electro-Optical, Infrared, and Millimeter Wave Systems Performance, (30 December 1981); https://doi.org/10.1117/12.932704

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