Accession Number : AD0639368

Title :   SOME PERCEPTUAL PROBLEMS IN THE USE OF THE VG REMOTE PPI.

Descriptive Note : Research rept.

Corporate Author : JOHNS HOPKINS UNIV BALTIMORE MD

Personal Author(s) : Garner,W. R.

Report Date : 15 SEP 1946

Pagination or Media Count : 40

Abstract : The VG is a radar remote indicator of the plan-position type which uses a 2-mirror system of reflection and projection to obtain a PPI presentation with a diameter of 25 inches. It is the intent of the experiments to study the VG as an instrument for anti-craft designation work, and to compare the efficiency of the VG with other standard equipment used for the same purposes. This study has 2 aspects: (1) To what extent can the efficiency of plotting be increased by using an indicator large enough to allow plotting directly on its surface. (2) Are there any advantages or disadvantages to the VG when it is used to obtain range and bearing information about targets for the purpose of locating directors on targets. As a further purpose, an analysis was made of the perceptual problems involved in the use of radar indicators, particularly in regard to the structuring of the perceptual field used to orient the operator in reference to the radar scope. (Author)

Descriptors :   (*PLAN POSITION INDICATORS, EFFECTIVENESS), PLOTTING BOARDS, RADAR TARGETS, RADAR OPERATORS, RANGE FINDING, DIRECTION FINDING

Subject Categories : Electrical and Electronic Equipment
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE