Sound based indoor and outdoor environment detection for seamless positioning handover

Abstract In this paper, we propose a sound-based indoor and outdoor environment detection method to realize seamless positioning handover for in-and-outdoor integrated positioning systems. The proposed method uses a special chirp sound probe which is propagated by a speaker of a mobile device and collected back through a microphone of the device. The indoor and outdoor environments are detected by analyzing the reverberation patterns of the retrieved probe. When we tested the proposed method at 46 indoor and outdoor locations, roughly 95% detection accuracy was achieved.

[1]  Mahesh K. Marina,et al.  A semi-supervised learning approach for robust indoor-outdoor detection with smartphones , 2014, SenSys.

[2]  D. J. Allerton,et al.  Book Review: GPS theory and practice. Second Edition, HOFFMANNWELLENHOFF B., LICHTENEGGER H. and COLLINS J., 1993, 326 pp., Springer, £31.00 pb, ISBN 3-211-82477-4 , 1995 .

[3]  N. Eberhardt.  Gps Theory And Practice , 2016 .

[4]  Zhong Fan,et al.  Emerging technologies and research challenges for 5G wireless networks , 2014, IEEE Wireless Communications.

[5]  Yunhao Liu,et al.  LANDMARC: Indoor Location Sensing Using Active RFID , 2004, Proceedings of the First IEEE International Conference on Pervasive Computing and Communications, 2003. (PerCom 2003)..

[6]  Gi-Wan Yoon,et al.  Building a Practical Wi-Fi-Based Indoor Navigation System , 2014, IEEE Pervasive Computing.

[7]  John Krumm,et al.  TempIO: Inside/Outside Classification with Temperature , 2004 .

[8]  Mike Y. Chen,et al.  Practical Metropolitan-Scale Positioning for GSM Phones , 2006, UbiComp.

[9]  Wenyan He,et al.  A novel method for chirp signal detection based on fractional Fourier transform , 2008, International Symposium on Instrumentation and Control Technology.

[10]  Andrew G. Dempster,et al.  Power Efficient Indoor/Outdoor Positioning Han- dover , 2011 .

[11]  James S. Walker.  Fast Fourier Transforms , 1991 .

[12]  Mo Li,et al.  IODetector: a generic service for indoor outdoor detection , 2012, SenSys '12.

[13]  Andy Hopper,et al.  The active badge location system , 1992, TOIS.

[14]  Yue Liu,et al.  Bluetooth positioning using RSSI and triangulation methods , 2013, 2013 IEEE 10th Consumer Communications and Networking Conference (CCNC).

[15]  Christian S. Jensen,et al.  Seamless Indoor/Outdoor Positioning Handover for Location-Based Services in Streamspin , 2009, 2009 Tenth International Conference on Mobile Data Management: Systems, Services and Middleware.