The Prediction of Diver Visibility and its Relation to Spectral Beam Attenuation
نویسندگان
چکیده
• Review the existing literature on diver visibility. • Carry out experimental determinations of the sighting range of a black disk using DaviesColley’s method together with spectral absorption and attenuation measurements in a wide range of natural optical environments. • Determine the proper wavelength or wavelength combination for the limiting beam attenuation for the horizontal black target (minimum c wavelength, photopic c, c(532), etc.) • Verify results using observations from the GLOW experiments and other diver visibility experiments.
منابع مشابه
Robust underwater visibility parameter.
We review theoretical models to show that contrast reduction at a specific wavelength in the horizontal direction depends directly on the beam attenuation coefficient at that wavelength. If a black target is used, the inherent contrast is always negative unity, so that the visibility of a black target in the horizontal direction depends on a single parameter only. That is not the case for any o...
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