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Consensus based distributed change detection using generalized likelihood ratio methodology
Faculty of Electrical Engineering, University of Belgrade.
Faculty of Electrical Engineering, University of Belgrade.
KTH, School of Electrical Engineering (EES), Automatic Control.
KTH, School of Electrical Engineering (EES), Automatic Control. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0001-9940-5929
2011 (English)In: 19th Mediterranean Conference on Control and Automation, MED 2011, 2011, 1170-1175 p.Conference paper, Published paper (Refereed)
Abstract [en]

In this paper a novel distributed recursive algorithm based on the Generalized Likelihood Ratio methodology is proposed for real time change detection using sensor networks. The algorithm is based on a combination of recursively generated local statistics and a global consensus strategy, and does not require any fusion center, so that the state of any node can be tested w.r.t. a given common threshold. Two different problems are discussed: detection of an unknown change in the mean and in the variance of an observed random process. Performance of the algorithm for change detection in the mean is analyzed in the sense of a measure of the error with respect to the corresponding centralized algorithm. The analysis encompasses constant and randomly time varying matrices describing communications in the network. Simulation results illustrate characteristic properties of the algorithms.

Place, publisher, year, edition, pages
2011. 1170-1175 p.
Keyword [en]
Consensus; Convergence; Distributed change detection; Generalized Likelihood Ratio; Sensor networks
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:kth:diva-89725DOI: 10.1109/MED.2011.5983148Scopus ID: 2-s2.0-80052369880ISBN: 978-145770125-2 (print)OAI: oai:DiVA.org:kth-89725DiVA: diva2:503443
Conference
Mediterranean Conference on Control and Automation, Corfu, Greece
Note
QC 20120219Available from: 2012-02-15 Created: 2012-02-15 Last updated: 2012-02-19Bibliographically approved

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Johansson, Karl Henrik

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CiteExportLink to record
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Citation style
  • apa
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  • de-DE
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  • nn-NO
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  • Other locale
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Output format
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  • asciidoc
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