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An Integrated Location Method using Reference Landmarks for Dead Reckoning System

Authors:
Mingmei Li
Kazuyuki Tasaka
Kiyohito Yoshihara

Keywords: dead reckoning system; integrated location method; mobile phone built-in sensors

Abstract:
Dead reckoning system is a promising solution for pedestrian location, which determines the user’s location by using multiple built-in sensors in the wireless devices or wearable sensors (3-axis, magnetic, gyro) on the pedestrian. However, most location estimation methods in dead reckoning systems meet the problem of accumulated location errors due to magnetic field disturbances. Some existing methods solved the problem by forcing the user to take the phone in a fixed gesture. However, they are not practical for the users in daily life and also accumulate errors with time flying. To solve the above problem, in this paper, we propose a new method to integrate wireless time-of-arrival landmark signals into dead reckoning system. The proposed method utilizes the hearable Time Difference of Arrival signals from the LMs, which are placed in the known locations to help correct the accumulated location estimation errors in dead reckoning systems. We evaluate the location estimation error with the proposed method when different number of reference LMs is placed and compare with location estimation in a dead reckoning system. Simulation results show that location estimation errors drop when different number of reference LMs are used.

Pages: 181 to 186

Copyright: Copyright (c) IARIA, 2012

Publication date: February 29, 2012

Published in: conference

ISSN: 2308-4413

ISBN: 978-1-61208-183-0

Location: Saint Gilles, Reunion

Dates: from February 29, 2012 to March 5, 2012