Sciweavers

Share
MOBISYS
2011
ACM

Indoor localization without infrastructure using the acoustic background spectrum

8 years 1 months ago
Indoor localization without infrastructure using the acoustic background spectrum
We introduce a new technique for determining a mobile phone’s indoor location even when Wi-Fi infrastructure is unavailable or sparse. Our technique is based on a new ambient sound fingerprint called the Acoustic Background Spectrum (ABS). An ABS serves well as a room fingerprint because it is compact, easily computed, robust to transient sounds, and surprisingly distinctive. As with other fingerprint-based localization techniques, location is determined by measuring the current fingerprint and then choosing the“closest”fingerprint from a database. An experiment involving 33 rooms yielded 69% correct fingerprint matches meaning that, in the majority of observations, the fingerprint was closer to a previous visit’s fingerprint than to any fingerprints from the other 32 rooms. An implementation of ABS-localization called Batphone is publicly available for Apple iPhones. We used Batphone to show the benefit of using ABS-localization together with a commercial WiFi-based...
Stephen P. Tarzia, Peter A. Dinda, Robert P. Dick,
Added 16 Sep 2011
Updated 16 Sep 2011
Type Journal
Year 2011
Where MOBISYS
Authors Stephen P. Tarzia, Peter A. Dinda, Robert P. Dick, Gokhan Memik
Comments (0)
books