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dc.contributor.advisorHo, Dominic K. C.eng
dc.contributor.authorShi, Wenjiaeng
dc.date.issued2013eng
dc.date.submitted2013 Falleng
dc.description"December 2013."eng
dc.description"A Thesis Presented to The Faculty of the Graduate School At the University of Missouri In Partial Fulfillment Of the Requirements for the Degree Master of Science."eng
dc.descriptionThesis supervisor: Dr. Dominic Ho.eng
dc.description.abstract[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] We propose and develop in this research an efficient closed-form solution to estimate the direction-of-arrivals (DOAs) for a wideband source signal, based on the data collected by a number of sensors. It has great potential for use in many applications including sonar, navigation and emergency rescue, which might require fast response and accuracy. A closed-form solution avoids the time-consuming grid search to obtain the DOA estimate, thus improving the efficiency and accuracy of the localization results. The proposed algorithm uses the two-stage least-squares minimization techniques and estimates the DOA using the time-difference-of-arrivals (TDOAs) of the source signal at different sensors. The algorithm is applicable for two-dimensional and three-dimensional DOA estimation, and it can be generalized to include the situation where the receiver positions have errors. In addition, this can work with a sensor array of arbitrary configurations. This is in contrast to most of the DOA techniques found in literature that require a linear sensor array configuration. We show theoretically that the performance of the proposed algorithm attains the Cramer-Rao lower bound (CRLB) accuracy. Simulations in MATLAB program are generated to compare the performance of the proposed algorithm with that of the maximum likelihood estimator (MLE) implemented by the iterative Taylor series linearization method.eng
dc.description.bibrefIncludes bibliographical references (pages 83-86).eng
dc.format.extent1 online resource (vii, 86 pages) : illustrations (chiefly color)eng
dc.identifier.oclc900166066eng
dc.identifier.urihttps://hdl.handle.net/10355/44737
dc.identifier.urihttps://doi.org/10.32469/10355/44737eng
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcommunityUniversity of Missouri--Columbia. Graduate School. Theses and Dissertationseng
dc.rightsAccess is limited to the campuses of the University of Missouri.eng
dc.sourceSubmitted by the University of Missouri--Columbia Graduate Schooleng
dc.titleAn efficient closed-form solution for wideband source direction-of-arrival estimationeng
dc.typeThesiseng
thesis.degree.disciplineElectrical and computer engineering (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelMasterseng
thesis.degree.nameM.S.eng


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