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Article

Collaborative WiFi Fingerprinting Using Sensor-Based Navigation on Smartphones

1
GNSS Research Center, Wuhan University, No.129 Luoyu Road, Wuhan 430079, China
2
Department of Geomatics Engineering, University of Calgary, Calgary, AB T2N1N4, Canada
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Author to whom correspondence should be addressed.
Academic Editor: Vittorio M.N. Passaro
Sensors 2015, 15(7), 17534-17557; https://doi.org/10.3390/s150717534
Received: 3 June 2015 / Revised: 4 July 2015 / Accepted: 10 July 2015 / Published: 20 July 2015
(This article belongs to the Section Physical Sensors)
This paper presents a method that trains the WiFi fingerprint database using sensor-based navigation solutions. Since micro-electromechanical systems (MEMS) sensors provide only a short-term accuracy but suffer from the accuracy degradation with time, we restrict the time length of available indoor navigation trajectories, and conduct post-processing to improve the sensor-based navigation solution. Different middle-term navigation trajectories that move in and out of an indoor area are combined to make up the database. Furthermore, we evaluate the effect of WiFi database shifts on WiFi fingerprinting using the database generated by the proposed method. Results show that the fingerprinting errors will not increase linearly according to database (DB) errors in smartphone-based WiFi fingerprinting applications. View Full-Text
Keywords: WiFi; indoor positioning; MEMS sensors; training; PDR WiFi; indoor positioning; MEMS sensors; training; PDR
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MDPI and ACS Style

Zhang, P.; Zhao, Q.; Li, Y.; Niu, X.; Zhuang, Y.; Liu, J. Collaborative WiFi Fingerprinting Using Sensor-Based Navigation on Smartphones. Sensors 2015, 15, 17534-17557. https://doi.org/10.3390/s150717534

AMA Style

Zhang P, Zhao Q, Li Y, Niu X, Zhuang Y, Liu J. Collaborative WiFi Fingerprinting Using Sensor-Based Navigation on Smartphones. Sensors. 2015; 15(7):17534-17557. https://doi.org/10.3390/s150717534

Chicago/Turabian Style

Zhang, Peng, Qile Zhao, You Li, Xiaoji Niu, Yuan Zhuang, and Jingnan Liu. 2015. "Collaborative WiFi Fingerprinting Using Sensor-Based Navigation on Smartphones" Sensors 15, no. 7: 17534-17557. https://doi.org/10.3390/s150717534

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