No need to war-drive
Top Cited Papers
- 25 June 2012
- proceedings article
- Published by Association for Computing Machinery (ACM)
- p. 197-210
- https://doi.org/10.1145/2307636.2307655
Abstract
We propose UnLoc, an unsupervised indoor localization scheme that bypasses the need for war-driving. Our key observation is that certain locations in an indoor environment present identifiable signatures on one or more sensing dimensions. An elevator, for instance, imposes a distinct pattern on a smartphone's accelerometer; a corridor-corner may overhear a unique set of WiFi access points; a specific spot may experience an unusual magnetic fluctuation. We hypothesize that these kind of signatures naturally exist in the environment, and can be envisioned as internal landmarks of a building. Mobile devices that "sense" these landmarks can recalibrate their locations, while dead-reckoning schemes can track them between landmarks. Results from 3 different indoor settings, including a shopping mall, demonstrate median location errors of 1:69m. War-driving is not necessary, neither are floorplans the system simultaneously computes the locations of users and landmarks, in a manner that they converge reasonably quickly. We believe this is an unconventional approach to indoor localization, holding promise for real-world deployment.Keywords
This publication has 22 references indexed in Scilit:
- Precise indoor localization using PHY layer informationPublished by Association for Computing Machinery (ACM) ,2011
- PinPointPublished by Association for Computing Machinery (ACM) ,2006
- Advanced Integration of WiFi and Inertial Navigation Systems for Indoor Mobile PositioningEURASIP Journal on Advances in Signal Processing, 2006
- A Practical Approach to Recognizing Physical ActivitiesPublished by Springer Nature ,2006
- The Horus WLAN location determination systemPublished by Association for Computing Machinery (ACM) ,2005
- Accuracy characterization for metropolitan-scale Wi-Fi localizationPublished by Association for Computing Machinery (ACM) ,2005
- VOR base stations for indoor 802.11 positioningPublished by Association for Computing Machinery (ACM) ,2004
- A system for LEASE: Location estimation assisted by stationary emitters for indoor RF wireless networksPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- Activity Recognition from User-Annotated Acceleration DataPublished by Springer Nature ,2004
- Ultra-wideband precision asset location systemPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003