Ship Acquisition on Television: Three Laboratory Experiments.
Summary rept. Aug 75-Apr 77,
NAVAL WEAPONS CENTER CHINA LAKE CALIF
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This report consists of a summary of three laboratory experiments on ship acquisition on television, plus information on how to apply the prediction equations that are included. Examples are given, along with limitations on the conditions under which the equations can be used. Some comparisons of the results of these experiments with the results of similar studies are also included. Experimental I was conducted to determine the relative importance of seven factors to ship identification on television. Targets had the strongest effect, followed by subjects, light position, ship wake, ship aspect angle, slant range, and camera depression angle. Ranges at which a ship could be recognized as a merchant ship or combatant under varying light azimuth, light elevation, ship aspect angle, and ship wake size conditions were determined in Experiment II. Multiple regression analysis yielded an equation to estimate recognition ranges. Experiment III was conducted to determine the ranges at which ships can be recognized and their orientation direction of movement determined. The factors of primary interest were target-to-background contrast, contrast sign, and ship aspect angle. Multiple regression analyses were performed and four prediction equations are included. Author
- Statistics and Probability
- Marine Engineering
- Non-Radio Communications