Development of GRAS Cockpit Displays for Advanced Approach and Landing Procedures

W.S. Ely

Abstract:	Satellite based navigation systems, with their ability to provide precision guidance when amalgamated with appropriate augmentation technology, have the potential to provide increased levels of safety and service to aircraft during the critical approach and landing phases of flight. The capability of providing variable approach angles and touchdown points, as well as offset and curved approaches has long been one of the selling points for Ground Based Augmentation Systems (GBAS), Satellite Based Augmentation Systems (SBAS) and more recently Ground-based Regional Augmentation Systems (GRAS). Whilst the underlying technology has developed relatively quickly, and thus the ability to develop these advanced approach and landing concepts confirmed; development of appropriate avionics, and in particular cockpit displays, has not advanced at the same rate. Large jet and turbo-prop aircraft fitted with Flight Management Systems (FMS) and Electronic Flight Instrument Systems (EFIS) have been shown to be capable of implementing some of these concepts, but smaller aircraft have not been considered in any detail due primarily to the high cost and complexity of FMS/EFIS technology.
Published in:	Proceedings of the 2003 National Technical Meeting of The Institute of Navigation January 22 - 24, 2003 Disneyland Paradise Pier Hotel Anaheim, CA
Pages:	287 - 299
Cite this article:	Ely, W.S., "Development of GRAS Cockpit Displays for Advanced Approach and Landing Procedures," Proceedings of the 2003 National Technical Meeting of The Institute of Navigation, Anaheim, CA, January 2003, pp. 287-299.
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