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Netw."],"published-print":{"date-parts":[[2014,6]]},"abstract":"<jats:p>The provision of accurate and reliable localization and tracking information for a target moving inside a binary Wireless Sensor Network (WSN) is quite challenging, especially when sensor failures due to hardware and\/or software malfunctions or adversary attacks are considered. Most tracking algorithms assume fault-free scenarios and exploit all binary sensor observations, thus their accuracy may degrade when faults are present in the field. Spatiotemporal information available while the target is traversing the sensor field can be used not only for tracking the target, but also for detecting certain types of faults that appear highly correlated both in time and space. Our main contribution is ftTRACK, a target tracking architecture that is resilient to sensor faults and consists of three main components, namely the sensor health-state estimator, a fault-tolerant localization algorithm, and a location smoothing component. The key idea in the ftTRACK architecture lies in the sensor health-state estimator that leverages spatiotemporal information from previous estimation steps to intelligently choose which sensors to employ in the localization and tracking tasks. Simulation results indicate that ftTRACK maintains a high level of tracking accuracy, even when a large number of sensors fail.<\/jats:p>","DOI":"10.1145\/2538509","type":"journal-article","created":{"date-parts":[[2014,6,17]],"date-time":"2014-06-17T12:38:13Z","timestamp":1403008693000},"page":"1-28","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":6,"title":["ftTRACK"],"prefix":"10.1145","volume":"10","author":[{"given":"Christos","family":"Laoudias","sequence":"first","affiliation":[{"name":"University of Cyprus"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michalis P.","family":"Michaelides","sequence":"additional","affiliation":[{"name":"Cyprus University of Technology"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christos G.","family":"Panayiotou","sequence":"additional","affiliation":[{"name":"University of Cyprus"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2014,6,20]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sigpro.2009.10.015"},{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.comnet.2004.06.007"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1145\/958491.958509"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-78929-1_11"},{"key":"e_1_2_1_5_1","doi-asserted-by":"publisher","DOI":"10.1049\/ip-rsn:19990255"},{"volume-title":"Proceedings of the IEEE International Conference on Communications (ICC'11)","author":"Chen H.","key":"e_1_2_1_6_1","unstructured":"H. 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