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The Lighthouse Location System for Smart Dust1
Kay Römer
Department of Computer Science
ETH Zurich, Switzerland
roemer@inf.ethz.ch
Abstract:
Smart Dust sensor networks - consisting of cubic millimeter scale
sensor nodes capable of limited computation, sensing, and passive
optical communication with a base station - are envisioned to fulfill
complex large scale monitoring tasks in a wide variety of application
areas. In many potential Smart Dust applications such as object
detection and tracking, fine-grained node localization plays a key
role. However, due to the unique characteristics of Smart Dust,
traditional localization systems cannot be used. In this paper we
present and analyse the Lighthouse location systems, a novel
laser-based location system for Smart Dust, which allows tiny dust
nodes to autonomously estimate their location with high accuracy
without additional infrastructure components besides a modified base
station device. Using an early 2D prototype of the system, node
locations could be estimated with an average accuracy of about 2% and
an average standard deviation of about 0.7% of the node's distance to
the base station.
Kay Roemer
2003-02-26