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The Effectiveness of a color/saturation beacon as a navigational range indicator / Kevin Laxar and S.M. Luria.
- Format:
- Book
- Government document
- Author/Creator:
- Laxar, Kevin
- Series:
- Report (Naval Submarine Medical Research Laboratory) ; no. 1163.
- Naval Submarine Medical Research Laboratory report ; no. 1163
- Language:
- English
- Subjects (All):
- Beacons.
- Color.
- Color vision.
- Colors.
- beacons.
- colors (hues or tints).
- symbolic color.
- color (perceived attribute).
- Physical Description:
- 1 online resource (iv, 11, [2] pages) : illustrations.
- Place of Publication:
- Groton, CT : Naval Submarine Medical Research Laboratory, [1990]
- Summary:
- We evaluated the effectiveness as an aid to navigation a single- station beacon which was white when viewed from the centerline of a channel and became increasingly red or green when viewed from off center to the right and left. First we measured the observers' ability to determine whether a light was white, reddish, or greenish. A wide range of colors, from 575 nm to 585 nm, were judged to be white, making it difficult to specify a beacon that would adequately signal center of channel. Second, we measured the ability of the observers to detect a change in color for slowly changing stimuli. There were seven just noticeable differences in the range of color investigated. This would provide a sensitivity of 21.8 m (71.4 ft) over a 152 m (500 ft) wide channel. Measurements were taken with and without a 'white' reference light. Under no condition did the reference light improve performance. For changing stimuli, however, those that were brighter or larger provided better sensitivity than those that were small or dim.
- Notes:
- Title from title screen (viewed Oct. 17, 2012).
- "13 December 1990."
- Includes bibliographical references (pages 10-11).
- Other Format:
- Print version: Laxar, Kevin. Effectiveness of a color/saturation beacon as a navigational range indicator
- Microfiche version: Laxar, Kevin. Effectiveness of a color/saturation beacon as a navigational range indicator
- OCLC:
- 227771947
- Access Restriction:
- APPROVED FOR PUBLIC RELEASE.
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