Closed-Form Solutions for Hybrid Cellular/GPS Positioning

N. Sirola, R. Piché, J. Syrjärinne

Abstract:	A geometric solution is given for cellular/GPS hybrid positioning problem in some minimally determined cases. The measurements considered include range and range difference measurements to cellular base stations, pseudorange measurements to GPS satellites, and user altitude measurement. The measurements are transformed into a system of planes and quadratic surfaces, such that the user position lies in one of their intersections. The algorithm is tested with several simulation cases, including those defined in the TIA-916 standard.
Published in:	Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003) September 9 - 12, 2003 Oregon Convention Center Portland, OR
Pages:	1613 - 1619
Cite this article:	Sirola, N., Piché, R., Syrjärinne, J., "Closed-Form Solutions for Hybrid Cellular/GPS Positioning," Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003), Portland, OR, September 2003, pp. 1613-1619.
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