Source Localization within a Uniform Circular Sensor Array

dc.contributor.authorZhu, Danny Z.
dc.date.accessioned2023-08-25T18:14:00Z
dc.date.available2023-08-25T18:14:00Z
dc.date.issued2007
dc.description.abstractTraditional source localization problems have been considered with linear and planar antenna arrays. In this research work, we assume that the sources are located within a uniformly spaced circular sensor array. Using a modified Metropolis algorithm and Polak-Ribière conjugate gradients, a hybrid optimization algorithm is proposed to localize sources within a two dimensional uniform circular sensor array, which suffers from far field attenuation. The developed algorithm is capable of accurately locating the position of a single, stationary source within 1% of a wavelength and 1˚ of angular displacement. In the single stationary source case, the simulated Cramer-Rao Lower Bound has also shown low noise susceptibility for a reasonable signal to noise ratio. Additionally, the localization of multiple stationary sources within the array is presented and tracking capabilities for a slowly moving non-stationary source is also demonstrated. In each case, results are presented, analyzed and discussed. Furthermore, the proposed algorithm has also been validated through hardware experimentation. The design and construction of four microstrip patch antennas and a wire antenna have been completed to emulate a circular sensor array and the enclosed source, respectively. Within this array, data has been collected at the four sensors from several fixed source positions and fitted into the proposed algorithm for source localization. The convergence of the algorithm with both simulated data and data collected from hardware are compared and sources of error and potential improvements are proposed.
dc.description.sponsorshipDepartment of Electrical Engineering
dc.identifier.citationZhu, Danny, "Source Localization within a Uniform Circular Sensor Array" (2007).
dc.identifier.otherNA
dc.identifier.urihttps://hdl.handle.net/20.500.14216/471
dc.publisherROCHESTER INSTITUTE OF TECHNOLOGY
dc.subjectElectromagnetics and Photonics
dc.subjectSignal Processing
dc.titleSource Localization within a Uniform Circular Sensor Array
dc.typeTheses or dissertations
local.peerReviewedYes

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