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Splash Spotting by Passive Infrared Technique.
[Technical Report, Technical Report]
YALE UNIV NEW HAVEN CT
Pagination or Media Count:
A previous study by the Laboratory of Marine Physics had indicated that the splash, caused by a mine or mine-like object entering the water when dropped from an appreciable height, could be detected by passive infrared techniques. Utilizing a commercially available radiometer, with a scanning mirror to sweep a twenty-degree sector area, equipment was designed to detect a splash occurring anywhere within such area. This report discusses tests conducted, in which the feasibility of detecting such splashes under various visibility conditions was demonstrated. Detection was obtained to a range of about 3500 yards at shorter ranges under visibility conditions ranging from bright and clear to darkness of night and under sea conditions ranging from smooth to fairly rough with white-caps.
[A, Approved For Public Release]