Accession Number : AD0445050


Title :   THE EFFECTS OF OBSERVER LOCATION AND VIEWING METHOD ON TARGET DETECTION WITH THE 18-INCH TANK-MOUNTED SEARCHLIGHT


Descriptive Note : Technical rept.,


Corporate Author : GEORGE WASHINGTON UNIV ALEXANDRIA VA HUMAN RESOURCES RESEARCH OFFICE


Personal Author(s) : Louis, Nicholas B


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/445050.pdf


Report Date : Jun 1964


Pagination or Media Count : 50


Abstract : An experiment was designed to determine the effects on target detection of observer location and method of viewing in relation to several types of targets at selected distances. Data were collected from 336 observers stationed at the searchlight source and at various distances up to 160 yards from the light, along a line at approximately a right angle to the axis of the beam. Using the tank range finder, periscope, binoculars, or unaided vision, observers tried to detect and identify a jeep, tank, and APC at each of four distances. Observers farther away from the light source detected and identified more targets than observers close to the searchlight. Binoculars and, for the first 30 seconds, unaided vision were more effective than the range finder or periscope in detecting and identifying targets.


Descriptors :   *DETECTION , PROBABILITY , ILLUMINATION , SEARCHLIGHTS , VISUAL INSPECTION , LIGHTING EQUIPMENT , VISION , NIGHT WARFARE , IDENTIFICATION


Subject Categories : Miscellaneous Detection and Detectors


Distribution Statement : APPROVED FOR PUBLIC RELEASE