Distributed Event Region Detection in Wireless Sensor Networks. (9th December 2007)

• Record Type: Journal Article
• Authors: Fang Fang, Jun Jun; Li Li, Hongbin Hongbin
• Other Names: Dogandzic Dogandzic Aleksandar Aleksandar Academic Editor.
• Is Part Of: EURASIP journal on advances in signal processing. Volume 2008(2008)
• Publication Date: 2007-12-09
• Subjects: Signal processing -- Periodicals; Traitement du signal; Signal processing; Periodicals; 621.3822
• DOI: 10.1155/2008/287870
• Languages: English
• ISSNs: 1687-6172

Abstract

Abstract : We propose a graph-based method for distributed event-region detection in a wireless sensor network (WSN). The proposed method is developed by exploiting the fact that the true events at geographically neighboring sensors have a statistical dependency in an event-region detection scenario. This spatial dependence amongst the sensors is modeled using graphical models (GMs) and serves as a regularization term to enhance the detection accuracy. The method involves solving a linear system of equations, which can be readily implemented in a distributed fashion. Numerical results are presented to illustrate the performance of our proposed approach.