This paper describes a system that calculates aircraft visual range with instrumentation alone. A unique message is encoded using modified binary phase shift keying and continuously flashed at high speed by ALSF-II runway approach lights. The message is sampled at 400 frames per second by an aircraft borne high-speed camera. The encoding is designed to avoid visible flicker and minimize frame rate. Instrument qualified visual range is identified as the largest distance at which the aircraft system can acquire and verify the correct, runway-specific signal. Scaled testing indicates that if the system were implemented on one full ALSF-II fixture, instrument qualified range could be established at 5 miles in clear weather conditions.
An approach to instrument qualified visual range
Enhanced and Synthetic Vision 2008 ; 2008 ; Orlando,Florida,United States
Proc. SPIE ; 6957
2008-04-15
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
An approach to instrument qualified visual range [6957-24]
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