Title: Smartphone Navigation Using Barometric Altitude and Topographic Maps
Author(s): Piotr Smagowski, John Raquet, Kyle Kauffman
Published in: Proceedings of the 29th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2016)
September 12 - 16, 2016
Oregon Convention Center
Portland, Oregon
Pages: 1270 - 1278
Cite this article: Smagowski, Piotr, Raquet, John, Kauffman, Kyle, "Smartphone Navigation Using Barometric Altitude and Topographic Maps," Proceedings of the 29th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2016), Portland, Oregon, September 2016, pp. 1270-1278.
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Abstract: In this paper a non-GNSS smartphone pedestrian navigation algorithm is presented, using only three sensors built-in to a smartphone – a step counter, magnetometer, and barometer. The approach comprises dead reckoning based on step distance and magnetic heading to determine the nominal path. Position updates are then obtained by comparing the measured barometric altitude with a downloaded topographic map. The position was estimated using a particle filter. Data from actual smartphones was collected over four different paths by several users, and results show that the system typically is able to maintain 20-60m accuracy that does not drift over time.