Accession Number : AD0698266

Title :   GEOGRAPHIC ORIENTATION IN AIRCRAFT PILOTS: AN ANALYTICAL STUDY OF VISUAL CHECKPOINTS.

Descriptive Note : Technical rept.,

Corporate Author : HUMAN FACTORS RESEARCH INC GOLETA CALIF

Personal Author(s) : McGrath,James J. ; Borden,Gail J.

Report Date : JUN 1969

Pagination or Media Count : 220

Abstract : A major study of the use of visual checkpoints in low-altitude navigation was conducted. The purpose was to develop a method for deriving design criteria for aeronautical charts, particularly those criteria used to select features for portrayal on the charts. Potential checkpoints visible in motion pictures taken at low altitude were cataloged in detail. Each feature was classified according to its category, measured according to its visual parameters (size, shape, contrast, etc.), and coded according to whether or not it was portrayed on standard aeronautical charts. The report presents a large amount of data showing the pilots' ability to interpret charts, the cartographers' ability to select the best features for portrayal, the categorical and parametric criteria that define the most useful checkpoints, and the effects of low-altitude experience on the pilots' evaluations of checkpoints. (Author)

Descriptors :   (*PILOTS, *DIRECTION FINDING), (*NAVIGATION CHARTS, LOW ALTITUDE), MAPPING, PHOTOINTERPRETATION, TARGET DISCRIMINATION, MATHEMATICAL ANALYSIS, VISUAL ACUITY, TERRAIN, GEOMETRIC FORMS, BUILDINGS, ROADS, INLAND WATERWAYS, RAILROADS, SURFACE AREA

Subject Categories : Cartography and Aerial Photography
      Human Factors Engineering & Man Machine System

Distribution Statement : APPROVED FOR PUBLIC RELEASE