THE ACCURACY OF TWO MODES OF RADAR TRACKING FOR TWO VISUAL NOISE LEVELS.
GEORGE WASHINGTON UNIV ALEXANDRIA VA HUMAN RESOURCES RESEARCH OFFICE
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To determine the feasibility of testing radar operators in an operational setting, an experiment was conducted with 32 inexperienced enlisted personnel. The variables were 1 manual versus aided-manual modes of angle tracking, and 2 no versus moderate visual noise on the radar display. Tracking accuracy was measured by means of photographs of the target and by paper-tape recordings of observers judgments of accuracy as indicated on the radar scope. These data were analyzed in terms of three response measures 1 distance-off-target, 2 time-on-target, and 3 frequency-off-target. A high correlation was found between the distance-off-target and time-on-target measures, while frequency-off-target appeared to be a relatively independent measure. In general, aided-manual tracking was superior to manual tracking in terms of variable errors. Visual noise had a pronounced detrimental effect on tracking performance for both tracking modes. The experiment led to the conclusion that, with some technical and methodological changes, it is feasible to conduct controlled tests of radar operations in the operation situation.
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