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dc.contributor.authorGholami, M.R.en_US
dc.contributor.authorGezici, Sinanen_US
dc.contributor.authorRydström, M.en_US
dc.contributor.authorStröm, E.G.en_US
dc.coverage.spatialIstanbul, Turkeyen_US
dc.date.accessioned2016-02-08T12:21:12Z
dc.date.available2016-02-08T12:21:12Z
dc.date.issued2010en_US
dc.identifier.urihttp://hdl.handle.net/11693/28457
dc.descriptionDate of Conference: 26-30 Sept. 2010en_US
dc.description.abstractThe problem of positioning a target node is studied for wireless sensor networks with cooperative active and passive sensors. Two-way time-of-arrival and time-difference-of-arrival measurements made by both active and passive nodes are used to estimate the position of the target node. A maximum likelihood estimator (MLE) can be employed to solve the problem. Due to the nonlinear nature of the cost function in the MLE, an iterative search might converge to local minima which often results in large estimation errors. To avoid this drawback, we instead formulate the problem of positioning as finding the intersection of a number of convex sets derived from measurements. To obtain this intersection, we apply the projection onto convex sets approach, which is robust and can be implemented in a distributed manner. Simulations are performed to compare the performance of the MLE and the proposed method. ©2010 IEEE.en_US
dc.language.isoEnglishen_US
dc.source.title21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communicationsen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/PIMRC.2010.5671918en_US
dc.subjectLarge estimation errorsen_US
dc.subjectLocal minimumsen_US
dc.subjectMaximum likelihood estimatoren_US
dc.subjectNonlinear natureen_US
dc.subjectPassive sensoren_US
dc.subjectProjection onto convex setsen_US
dc.subjectTarget nodesen_US
dc.subjectTime-difference-of-arrivalen_US
dc.subjectTime-of-arrivalen_US
dc.subjectWireless sensoren_US
dc.subjectBlind source separationen_US
dc.subjectEstimationen_US
dc.subjectMaximum likelihood estimationen_US
dc.subjectProblem solvingen_US
dc.subjectRadio communicationen_US
dc.subjectSensor networksen_US
dc.subjectSensor nodesen_US
dc.subjectSet theoryen_US
dc.subjectWireless sensor networksen_US
dc.titleA distributed positioning algorithm for cooperative active and passive sensorsen_US
dc.typeConference Paperen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.citation.spage1713en_US
dc.citation.epage1718en_US
dc.identifier.doi10.1109/PIMRC.2010.5671918en_US
dc.publisherIEEEen_US
dc.contributor.bilkentauthorGezici, Sinan


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