A Relative Positioning System for Spatial Awareness of Collocated Mobile Devices and Users
by Gerd Kortuem
Friday, April 8, 2005, 11:30am - Friday, April 8, 2005, 12:30pm
We introduce a novel system, Relate, which provides fine-grained relative position information to collocated devices on the basis of peer-to-peer sensing, thus overcoming dependence on any external infrastructure. The system is realized as hardware/software plug-in, using ultrasonic devices for peer-to-peer sensing, USB to interface with standard mobile devices, and data abstraction and inference to map sensor data to a spatial model that maintains both quantitative and qualitative relationships.
We present a set of services and applications to demonstrate the utility of the system and report experimental results on system performance and accuracy of relative position and orientation estimation.