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DTIC ADA089755: Helicopter Electro-Optical System Display Requireme... |
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by Defense Technical Information Center |
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Twenty-four Army helicopter pilots viewed videotaped |
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segments of low- level and nap-of-the-earth (NOE) |
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helicopter flights as presented on television monitors |
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designed to simulate an airborne low-light-level |
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television cockpit display system. While viewing these |
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displays in an environment having no additional ambient |
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illumination, these pilots were asked to set cockpit |
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monitor luminance at the lowest level that they judged |
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would permit successful flight control over the terrain |
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being overflown. Each pilot adjusted luminance levels for |
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eight different display conditions formed by the |
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factorial combination of display size, type of terrain, |
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and object-luminance to display-luminance transfer |
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function (system gamma function). Results show that |
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pilots used lower luminance settings when viewing the |
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larger of the two display sizes presented. They also used |
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significantly lower luminance settings when viewing |
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wooded terrain, with the system gamma function modified |
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to provide 'enhanced' contrast in the luminance range of |
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interest, as against an unmodified system gamma function. |
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The pilot's subjective impressions agreed with their |
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measured settings. This report discusses the impact of |
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these results on the specifications of display |
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requirements for a low-light-level television system for |
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aiding night NOE flight. |
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Date Published: 2017-12-06 20:49:16 |
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Identifier: DTIC_ADA089755 |
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Item Size: 20739467 |
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Language: english |
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Media Type: texts |
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# Topics |
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DTIC Archive; Hyman, Aaron; ARMY RESE... |
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