Accession Number : AD0619033

Title :   THE PROBABILITY OF VISUAL DETECTION OF RECONNAISSANCE AIRCRAFT BY GROUND OBSERVERS,

Corporate Author : RAND CORP SANTA MONICA CALIF

Personal Author(s) : DUGAS,D. J.

Report Date : JUN 1965

Pagination or Media Count : 67

Abstract : An investigation was made of the ability of ground observers, unaided by optical or electronic devices, to detect visually each of six reconnaissance aircraft. Calculations are made for a variety of conditions, in altitudes, speeds, and visibilities. Among several conclusions are: (1) the probability of visual detection falls off rapidly as aircraft altitude is decreased below 2000 ft; (2) increasing speed is an effective way to reduce detectability; (3) contrast is a critical factor in determining detectability but is difficult to predict or control. (Author)

Descriptors :   (*RECONNAISSANCE AIRCRAFT, TRACKING), VISIBILITY, LOW ALTITUDE, FLIGHT SPEEDS, TARGET DISCRIMINATION, ATMOSPHERES, SKY BRIGHTNESS, VISION, PROBABILITY, MATHEMATICAL ANALYSIS, GRAPHICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE