Accession Number : AD0639644

Title :   THE USE OF DISPLACEMENT, FLASH, AND DEPTH-OF-FLASH CODED DISPLAYS FOR PROVIDING CONTROL SYSTEM INFORMATION,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Ziegler,P. N. ; Reilly,R. E. ; Chernikoff,R.

Report Date : 06 JUL 1966

Pagination or Media Count : 10

Abstract : Two experiments were performed to investigate the use of brightness-coding and flash-coding techniques for presenting information usually provided by displacement displays. The first experiment compared a conventional displacement display with this same display incorporating flash coding, using one of two frequencies to indicate high or low error direction. The results of the study showed that at longer viewing ranges, at which the displacement cannot be discriminated, tracking performance was enhanced by the addition of flash coding to the displacement display. The second experiment, using a point source of light, compared flash coding (of error direction) with combined flash and brightness coding(of error direction plus magnitude). This latter display, termed 'depth of flash,' was found to be superior after a relatively short learning period. The findings indicate that the depth-of-flash technique may be a fruitful approach in the development of an effective landing aid. (Author)

Descriptors :   (*LANDING AIDS, DISPLAY SYSTEMS), (*CODING, DISPLAY SYSTEMS), VISUAL SIGNALS, CONTROL SYSTEMS, AIRCRAFT, HUMAN FACTORS ENGINEERING, BRIGHTNESS, GLIDE PATH SYSTEMS

Subject Categories : Terminal Flight Facilities
      Human Factors Engineering & Man Machine System

Distribution Statement : APPROVED FOR PUBLIC RELEASE