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Proceedings Paper

Enhanced detection of LED runway/approach lights for EVS
Author(s): J. Richard Kerr
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Paper Abstract

The acquisition of approach and runway lights by an imager is critical to landing-credit operations with EVS. Using a GPS clock, LED sources are pulsed at one-half the EVS video rate of 60 Hz or more. The camera then uses synchronous (lock-in) detection to store the imaged lights in alternate frames, with digital subtraction of the background for each respective frame-pair. Range and weather penetration, limited only by detector background shot-noise (or camera system noise at night), substantially exceed that of the human eye. An alternative is the use of short-wave infrared cameras with eyesafe laser diode emitters. Also, runway identification may be encoded on the pulses. With standardized cameras and emitters, an "instrument qualified visual range" may be established. The concept extends to portable beacons at austere airfields, and to see-and-avoid sensing of other aircraft including UAVs.

Paper Details

Date Published: 4 April 2008
PDF: 12 pages
Proc. SPIE 6957, Enhanced and Synthetic Vision 2008, 695703 (4 April 2008); doi: 10.1117/12.764684
Show Author Affiliations
J. Richard Kerr, Max-Viz, Inc. (United States)

Published in SPIE Proceedings Vol. 6957:
Enhanced and Synthetic Vision 2008
Jeff J. Güell; Maarten Uijt de Haag, Editor(s)

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