Multi-sensor location tracking
Ulf Leonhardt, Jeff Magee · 1998
In order to support location-aware apphcations it is necessary to locate people and equipment in near rerd-time.To avoid unnecessary exposure of details of the underlying tracking and positioning systems.researchers have proposed an additiond layer of indirection between sensors and app~lcations: a location service.In this paper, we examine how such a service should acquire and integrate location data from multiple heterogeneous location subsystem.We propose a fusion algorithm based on a formrdly defined, hierarchicrd location model.The algorithm can identify and exploit overlaps among location sightings to improve accuracy.Moreover, inconsistencies can be detected and dedt with either by finding the least common denominator, or the most ~iely rdternative.1.1