FAA/Ohio University United Parcel Service DGPS Autoland Flight Test Demonstration

Frank van Graas, David Diggle, Maarten Uijt de Haag, Victor Wullschleger, Ruben Velez, Dave Lamb, Mark Dimeo, Gre

Abstract:	Test results are presented from a feasibility determination of Differential Global Positioning System (DGPS) Category (CAT) IIIb precision approach and landings. A code-based DGPS architecture with integrity monitoring was used. In addition, the feasibility of a combined DGPS/Instrument Landing System (ILS) architecture was evaluated. A total of 50 approaches were flown: thirty-two approaches used DGPS for both lateral and vertical guidance, 14 used DGPS for lateral and ILS for vertical guidance, and 4 approaches used ILS only. A United Parcel Service Boeing 757 was the test aircraft for all flight tests. The results of the tests show that code-based DGPS as well as combined DGPS/ILS, when used as the input to an autopilot, can attain vertical and lateral accuracies consistent with Required Navigation Performance for CAT IIIb.
Published in:	Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995) September 12 - 15, 1995 Palm Springs, CA
Pages:	727 - 737
Cite this article:	van Graas, Frank, Diggle, David, de Haag, Maarten Uijt, Wullschleger, Victor, Velez, Ruben, Lamb, Dave, Dimeo, Mark, Gre,, "FAA/Ohio University United Parcel Service DGPS Autoland Flight Test Demonstration," Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995), Palm Springs, CA, September 1995, pp. 727-737.
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