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This paper presents the design of a decentralized storage scheme to support multi-dimensional range queries over sensor networks. We build a distributed k-d tree based index structure over sensor network, so as to efficiently map high dimensional event data to a two-dimensional space of sensors while preserving the proximity of events. We propose a dynamic programming based methodology to control...
Localization is an essential problem in wireless sensor networks (WSNs). Many localization algorithms have been proposed, but few efforts have been paid on theoretical analysis on the accuracy of these algorithms. Because it is naturally to formalize range-based localization problems as deterministic parameter estimation problems, for range-based localization algorithms Crameacuter-Rao lower bound...
Target localization is an important application in wireless sensor networks. However, because of the limitation of the capability of the individual nodes and the noises in the environment, a single sensor usually cannot localize a target accurately and observations from multiple sensors need to be combined to improve the localization accuracy. In this paper, the Centroid method, a widely used node...
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