Ultraviolet sensor as integrity monitor for enhanced flight vision system (EFVS) approaches to Cat II RVR conditions

John B. McKinley; Roger Pierson; M. C. Ertem; Norris J. Krone Jr.; James A. Cramer

doi:10.1117/12.783736

15 April 2008 Ultraviolet sensor as integrity monitor for enhanced flight vision system (EFVS) approaches to Cat II RVR conditions

John B. McKinley, Roger Pierson, M. C. Ertem, Norris J. Krone Jr., James A. Cramer

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Proceedings Volume 6957, Enhanced and Synthetic Vision 2008; 69570E (2008) https://doi.org/10.1117/12.783736
Event: SPIE Defense and Security Symposium, 2008, Orlando, Florida, United States

Abstract

Flight tests were conducted at Greenbrier Valley Airport (KLWB) and Easton Municipal Airport / Newnam Field (KESN) in a Cessna 402B aircraft using a head-up display (HUD) and a Norris Electro Optical Systems Corporation (NEOC) developmental ultraviolet (UV) sensor. These flights were sponsored by NEOC under a Federal Aviation Administration program, and the ultraviolet concepts, technology, system mechanization, and hardware for landing during low visibility landing conditions have been patented by NEOC. Imagery from the UV sensor, HUD guidance cues, and out-the-window videos were separately recorded at the engineering workstation for each approach. Inertial flight path data were also recorded. Various configurations of portable UV emitters were positioned along the runway edge and threshold. The UV imagery of the runway outline was displayed on the HUD along with guidance generated from the mission computer. Enhanced Flight Vision System (EFVS) approaches with the UV sensor were conducted from the initial approach fix to the ILS decision height in both VMC and IMC. Although the availability of low visibility conditions during the flight test period was limited, results from previous fog range testing concluded that UV EFVS has the performance capability to penetrate CAT II runway visual range obscuration. Furthermore, independent analysis has shown that existing runway light emit sufficient UV radiation without the need for augmentation other than lens replacement with UV transmissive quartz lenses. Consequently, UV sensors should qualify as conforming to FAA requirements for EFVS approaches. Combined with Synthetic Vision System (SVS), UV EFVS would function as both a precision landing aid, as well as an integrity monitor for the GPS and SVS database.

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John B. McKinley, Roger Pierson, M. C. Ertem, Norris J. Krone Jr., and James A. Cramer "Ultraviolet sensor as integrity monitor for enhanced flight vision system (EFVS) approaches to Cat II RVR conditions", Proc. SPIE 6957, Enhanced and Synthetic Vision 2008, 69570E (15 April 2008); https://doi.org/10.1117/12.783736

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KEYWORDS

Ultraviolet radiation

Heads up displays

Ultraviolet detectors

Sensors

Visibility

Enhanced vision

Fiber optic gyroscopes

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