GROPING: Geomagnetism and cROwdsensing Powered Indoor NaviGation

Although a large number of WiFi fingerprinting based indoor localization systems have been proposed, our field experience with Google Maps Indoor (GMI), the only system available for public testing, shows that it is far from mature for indoor navigation. In this paper, we first report our field stud...

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Bibliographic Details
Published in:IEEE transactions on mobile computing 2015-02, Vol.14 (2), p.387-400
Main Authors: Chi Zhang, Subbu, Kalyan P., Jun Luo, Jianxin Wu
Format: Magazinearticle
Language:English
Subjects:
Accuracy
Fingerprints
Geomagnetism
IEEE 802.11 Standards
Indoor
Localization
Magnetometers
Navigation
Position (location)
Sensors
Servers
Shopping malls
Trajectory
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Summary:Although a large number of WiFi fingerprinting based indoor localization systems have been proposed, our field experience with Google Maps Indoor (GMI), the only system available for public testing, shows that it is far from mature for indoor navigation. In this paper, we first report our field studies with GMI, as well as experiment results aiming to explain our unsatisfactory GMI experience. Then motivated by the obtained insights, we propose GROPING as a self-contained indoor navigation system independent of any infrastructural support. GROPING relies on geomagnetic fingerprints that are far more stable than WiFi fingerprints, and it exploits crowdsensing to construct floor maps rather than expecting individual venues to supply digitized maps. Based on our experiments with 20 participants in various floors of a big shopping mall, GROPING is able to deliver a sufficient accuracy for localization and thus provides smooth navigation experience.
ISSN:1536-1233
1558-0660
DOI:10.1109/TMC.2014.2319824