![]() ![]() A pilot’s confidence rating for identifying the airport follows a similar trend, but with slightly more photopic contribution.When airfield orientation and visual confirmation are required, the fitted spectral response requires some photopic contribution.Detection of airfield lighting is best described by a purely scotopic spectral sensitivity. ![]() A system for mesopic photometry, developed earlier by the LRC, works well for specifying the spectrum of airfield lighting.Airfield lighting should be visible to both peripheral and foveal (central) vision: “Locate and identify” task involves both peripheral detection and foveal examination Airfield lights should not disappear when looked at directly.Researchers measured the subjects’ elapsed time, accuracy rate, and confidence level in locating the appropriate airfield. Subjects viewed different lighting scenarios and were asked to locate the airfield and determine the runway’s orientation. Researchers simulated visual conditions of airfield lighting by using a scale model capable of varying the LED intensity, color, flash pattern, viewing angle, and spatial arrangement of simulated airfield lights. This project developed specifications for remote airfield lighting systems that optimize performance, minimize cost, are visually effective and reliable, use minimal energy, are easy to implement, and require low maintenance. The LRC explored ways to help make night landings at remote airports safer and area communities more accessible. Night landings at remote airfields are often dangerous. Many remote communities, such as those in Alaska, depend on air transport for business and emergency aid.
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