A GPS-based High-precision Positioning and Guidance System

Herbert Landau, Robert Hundt, Christian Pagels, Ulrich Vollath, Bo Granstedt

Abstract:	Differential GPS positioning is an excellent tool for position determination of aircraft in applications like airborne photogrammetry, remote sensing, flight testing etc. These areas require threedimensional position determination with up to centimeter accuracy. The paper describes the design, development and experiences with a GPS-based differential positioning system which is designed to provide accuracies of better than f 7 cm (20) on distances of up to 50 km. The system consists of dual-frequency geodetic-type GPS receivers, a mission planning component for flight preparation, a pilot guidance system for navigation of the aircraft with a design goal of better than f 5 m real-time position accuracy. The paper also describes the differential positioning system hard- and software and the postprocessing system which is using latest state-of-the-art on-the-fly ambiguity resolution techniques to guarantee the required post-processing accuracy. Flight tests were performed in aircraft and helicopters to demonstrate the performance and accuracy of the system. Results of these experiments and results of production flights are summarized and described.
Published in:	Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994) September 20 - 23, 1994 Salt Palace Convention Center Salt Lake City, UT
Pages:	1099 - 1106
Cite this article:	Landau, Herbert, Hundt, Robert, Pagels, Christian, Vollath, Ulrich, Granstedt, Bo, "A GPS-based High-precision Positioning and Guidance System," Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994), Salt Lake City, UT, September 1994, pp. 1099-1106.
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