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Proceedings Paper

The Effect Of Field-Of-View Size On Performance At A Simple Simulated Air-To-Air Mission
Author(s): M. J. Wells; M. Venturino; R. K. Osgood
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Paper Abstract

Seventeen subjects were presented with stationary targets at random locations in an area 120 left and right and 90 deg upwards from straight ahead. Targets would change shape to indicate that they were threats. Using a head-coupled simulator with 5 different sized fields-of-view (FOVS), subjects had to search for the targets, monitor them for changes in shape, and shoot them. Occasionally, targets which had not changed shape would disappear and subjects had to indicate their last location. There were 9 target conditions which varied in complexity due to the number of targets presented, the number of threats, or the number of targets to be replaced. Decreasing the size of the FOV produced a significant decrement in the percentage of targets hit and a significant increase in the time for which the targets threatened the subjects. In addition, there were significant effects caused by target condition and significant interactions between these two main effects. The data suggest that the effect of FOV size was dependent on task difficulty. An easy task required a 20 deg FOV, whereas a more demanding task required a 60 deg FOV. Target replacement error was unaffected by FOV size, a finding that is consistent with an earlier experiment and which supports the hypothesis thit once the information is acquired, the size of the FOV does not affect its recall.

Paper Details

Date Published: 5 September 1989
PDF: 12 pages
Proc. SPIE 1116, Helmet-Mounted Displays, (5 September 1989); doi: 10.1117/12.960907
Show Author Affiliations
M. J. Wells, System Research Laboratories, Inc. (United States)
M. Venturino, Armstrong Aerospace Medical Research Laboratory, Wright-Patterson AFB (United States)
R. K. Osgood, System Research Laboratories, Inc. (United States)

Published in SPIE Proceedings Vol. 1116:
Helmet-Mounted Displays
Jerry Carollo, Editor(s)

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