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dc.contributor.advisorMcEachen, John
dc.contributor.advisorTummala, Murali
dc.contributor.authorLintz, William A.
dc.dateSeptember 2009
dc.date.accessioned2012-08-22T15:32:26Z
dc.date.available2012-08-22T15:32:26Z
dc.date.issued2009-09
dc.identifier.urihttps://hdl.handle.net/10945/10472
dc.description.abstractThis research investigates the reception of radio frequency signals using wirelessly networked autonomous sensor nodes under random motion. Emphasis is placed on investigating effects of random motion on sensor array beamforming. Novel techniques to conduct array operations in spite of the node motion are offered. Conflicting priorities of energy consumption and array operational requirements are addressed to demonstrate performance of the proposed solutions. The issues of node management in a beamforming application, degradation of beamforming performance due to element motion, the need for a weight reset time determination method, and the effect of unsteady element orientation in network communications are explored for system implementation. Examination of Doppler shift due to node motion demonstrated that its impact is negligible on beamforming performance. The management system proposed for the wireless sensor network enabled sensor operation while preserving node energy. Analysis of independent node motion on beamforming performance produced a relationship between motion and gain percent change on aim point. A novel methodology was offered to determine weight reset times with elements in motion. Investigation of unsteady antenna orientation produced an innovative method to mitigate communications degradation. Each proposal proved superior to alternate approaches in terms of performance and energy conservation.en_US
dc.description.urihttp://archive.org/details/radiofrequencysi1094510472
dc.format.extentxxii, 269 p. : ill. ; 28 cm.en_US
dc.publisherMonterey, California: Naval Postgraduate Schoolen_US
dc.subject.lcshRadio|xReceivers and reception.en_US
dc.titleRadio frequency signal reception via distributed wirelessly networked sensors under random motionen_US
dc.contributor.departmentElectrical Engineering
dc.subject.authorSensor Networksen_US
dc.subject.authorBeamformingen_US
dc.subject.authorRandom Motionen_US
dc.subject.authorOrientation;en_US
etd.thesisdegree.namePh.D. in Electrical Engineeringen_US
etd.thesisdegree.levelDoctoralen_US
etd.thesisdegree.disciplineElectrical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate School (U.S.)en_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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