Autonomous and EGNOS Positioning Accuracy Determination of Cessna Aircraft on the Edge of EGNOS Coverage

Marek Grzegorzewski, Adam Ciecko, Stanislaw Oszczak, Dariusz Popielarczyk

Abstract:	The paper presents the results of accuracy estimation of GPS standalone method as well as EGNOS corrected used in the determination of airplane trajectory. The experiment was performed on April, 4th 2007 in the central part of Poland. The reference GPS observations were carried out with Ashtech Z-Xtreme receiver placed onboard of the aircraft. Nine GPS reference stations, located along the aircraft route, were used during the experiment to ensure high accuracy of the reference position. Positions of the aircraft trajectory were determined, independently, on the basis of every reference station with the use of precise OTF (On-the-Fly) technique. Standard deviations were calculated for every epoch of the flight (one second interval). Accurate trajectory was the base for accuracy estimation of stand alone method and EGNOS corrected. The analyzed measurements were performed with the following receivers: Thales Mobile Mapper, U-blox and Eten Glofiish based on SirfStar III chipset. The achieved accuracy shows that not all receivers are able to properly interpret EGNOS signal. It also shows that in Poland, at the eastern edge of EGNOS coverage the corrections are not always available to the users.
Published in:	Proceedings of the 2008 National Technical Meeting of The Institute of Navigation January 28 - 30, 2008 The Catamaran Resort Hotel San Diego, CA
Pages:	407 - 410
Cite this article:	Grzegorzewski, Marek, Ciecko, Adam, Oszczak, Stanislaw, Popielarczyk, Dariusz, "Autonomous and EGNOS Positioning Accuracy Determination of Cessna Aircraft on the Edge of EGNOS Coverage," Proceedings of the 2008 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 2008, pp. 407-410.
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