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