Effects Of Atmospheric And Man-Made Obscurants On Visual Contrast

Richard C. Shirkey

doi:10.1117/12.932696

30 December 1981 Effects Of Atmospheric And Man-Made Obscurants On Visual Contrast

Richard C. Shirkey

Proceedings Volume 0305, Atmospheric Effects on Electro-Optical, Infrared, and Millimeter Wave Systems Performance; (1981) https://doi.org/10.1117/12.932696
Event: 25th Annual Technical Symposium, 1981, San Diego, United States

Abstract

The development of simulation models to assess the ability of modern day sensors operating under adverse weather conditions and in the presence of man-made obscurants, to detect, recognize, and identify objects of interest is an ambitious goal made difficult by the large number of independent variables involved. A first step toward the achievement of this goal is the development of the Electro-Optical Systems Atmospheric Effects Library (EOSAEL). With this concept (library of models) the effects of stratus, stratocumulus, cumulus congestus cloud types; fog/haze and rain; atmospheric gases; vehicular dust; chemical and artillery smoke/dust can be examined separately or in conjunction to determine their effects (degradation) on the , propagation of radiation through the aforementioned media. The atmospheric constituents can be varied to determine their effects on contrast and transmission. The change in transmission due to the effects of windspeed on the man-made obscurants as a function of time can also be examined. Using EOSAEL a sensitivity study investigating the effects of obscurants on the contrast transmission has been performed for the specific scenario of a sensor (human eye) looking at an object over a fixed geometry under daytime illumination conditions.

Citation Download Citation

Richard C. Shirkey "Effects Of Atmospheric And Man-Made Obscurants On Visual Contrast", Proc. SPIE 0305, Atmospheric Effects on Electro-Optical, Infrared, and Millimeter Wave Systems Performance, (30 December 1981); https://doi.org/10.1117/12.932696

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