Accession Number : AD0666577
Title : VISUAL DETECTION OF POSITIVE VERSUS NEGATIVE PIPS ON A RADAR PPI.
Descriptive Note : Technical memo.,
Corporate Author : HUMAN FACTORS RESEARCH INC GOLETA CALIF
Personal Author(s) : Baker,C. H. ; Earl,William K.
Report Date : FEB 1968
Pagination or Media Count : 13
Abstract : Radar pip visibility thresholds were determined for conventional positive pips, and for 'negative' pips, which were generated by applying a signal to the cathode of a CRT. It was concluded that at optimum phosphor brightness, pip visibility thresholds for positive and for negative pips, on both P7 and P19 phosphors, differ by less than one decibel. (Author)
Descriptors : (*PLAN POSITION INDICATORS, RADAR EQUIPMENT), (*CATHODE RAY TUBES, TARGET DISCRIMINATION), TARGET ACQUISITION, VISUAL ACUITY, LUMINESCENCE, HUMAN FACTORS ENGINEERING, THRESHOLDS(PHYSIOLOGY), RADAR TARGETS, DETECTION, PHOSPHORESCENT MATERIALS
Subject Categories : Electrooptical and Optoelectronic Devices
Active & Passive Radar Detection & Equipment
Human Factors Engineering & Man Machine System
Distribution Statement : APPROVED FOR PUBLIC RELEASE