Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/34169
Title: Who sits where? Infrastructure-free in-vehicle cooperative positioning via smartphones
Authors: He, Z
Cao, J 
Liu, X
Tang, S
Keywords: In-vehicle positioning
Opportunistic sensing
Signal processing
Smartphone sensing
Issue Date: 2014
Publisher: MDPI AG
Source: Sensors (Switzerland), 2014, v. 14, no. 7, p. 11605-11628 How to cite?
Journal: Sensors (Switzerland) 
Abstract: Seat-level positioning of a smartphone in a vehicle can provide a fine-grained context for many interesting in-vehicle applications, including driver distraction prevention, driving behavior estimation, in-vehicle services customization, etc. However, most of the existing work on in-vehicle positioning relies on special infrastructures, such as the stereo, cigarette lighter adapter or OBD (on-board diagnostic) adapter. In this work, we propose iLoc, an infrastructure-free, in-vehicle, cooperative positioning system via smartphones. iLoc does not require any extra devices and uses only embedded sensors in smartphones to determine the phones' seat-level locations in a car. In iLoc, in-vehicle smartphones automatically collect data during certain kinds of events and cooperatively determine the relative left/right and front/back locations. In addition, iLoc is tolerant to noisy data and possible sensor errors. We evaluate the performance of iLoc using experiments conducted in real driving scenarios. Results show that the positioning accuracy can reach 90% in the majority of cases and around 70% even in the worst-cases.
URI: http://hdl.handle.net/10397/34169
ISSN: 1424-8220
DOI: 10.3390/s140711605
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