Categories of Localization Schemes • Range-Based Localization Schemes • TOA Time of Arrival • TDOA Time Difference of Arrival • AOA Angle of Arrival • Range-Free Localization Schemes • Centroid Algorithm • DV-HOP • APIT
Centroid Algorithm • GPS-less Low Cost Outdoor Localization for Very Small Devices • IEEE Personal Communications Magazine, October 2000. • N. Bulusu, J. Heidemann and D. Estrin
Centroid Algorithm • Outdoor environment • There are reference points situated at known positions and transmit periodic beacon signals. • The receiver localizes itself to the region which coincides to the intersection of the connectivity regions of this set of reference points, which is defined by the centroid of these reference points.
DV-Hop Localization • Ad-Hoc Positioning Systems (APS) • Proceedings of IEEE GLOBECOM ‘01, November 2001. • D. Nicolescu and B. Nath, Rutgers University
APIT • Range-Free Localization Schemes for Large Scale Sensor Networks • Accepted by MobiCom 2003 • Tian He, Chengdu Huang, Brian M. Blum, John A. Stankovic, Tarek Abdelzaher, University of Virginia