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dc.contributor.authorArikan, F.en_US
dc.contributor.authorKoroglu, O.en_US
dc.contributor.authorFidan, S.en_US
dc.contributor.authorArıkan, Orhanen_US
dc.contributor.authorGuldogan, M. B.en_US
dc.date.accessioned2016-02-08T10:02:35Z
dc.date.available2016-02-08T10:02:35Z
dc.date.issued2009en_US
dc.identifier.issn0273-1177
dc.identifier.urihttp://hdl.handle.net/11693/22626
dc.description.abstractDirection-of-Arrival (DOA) defines the estimation of arrival angles of an electromagnetic wave impinging on a set of sensors. For dispersive and time-varying HF channels, where the propagating wave also suffers from the multipath phenomena, estimation of DOA is a very challenging problem. Multipath Separation-Direction of Arrival (MS-DOA), that is developed to estimate both the arrival angles in elevation and azimuth and the incoming signals at the output of the reference antenna with very high accuracy, proves itself as a strong alternative in DOA estimation for HF channels. In MS-DOA, a linear system of equations is formed using the coefficients of the basis vector for the array output vector, the incoming signal vector and the array manifold. The angles of arrival in elevation and azimuth are obtained as the maximizers of the sum of the magnitude squares of the projection of the signal coefficients on the column space of the array manifold. In this study, alternative Genetic Search Algorithms (GA) for the maximizers of the projection sum are investigated using simulated and experimental ionospheric channel data. It is observed that GA combined with MS-DOA is a powerful alternative in online DOA estimation and can be further developed according to the channel characteristics of a specific HF link.en_US
dc.language.isoEnglishen_US
dc.source.titleAdvances in Space Researchen_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.asr.2008.09.037en_US
dc.subjectDirection finding (DF)en_US
dc.subjectDirection of arrival (DOA)en_US
dc.subjectGenetic algorithm (GA)en_US
dc.subjectHF channelen_US
dc.subjectIonosphereen_US
dc.subjectMultipath separation and direction of arrival (MS-DOA) estimationen_US
dc.titleMultipath separation-direction of arrival (MS-DOA) with genetic search algorithm for HF channelsen_US
dc.typeArticleen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.citation.spage641en_US
dc.citation.epage652en_US
dc.citation.volumeNumber44en_US
dc.citation.issueNumber6en_US
dc.identifier.doi10.1016/j.asr.2008.09.037en_US
dc.publisherELSEVIERen_US
dc.contributor.bilkentauthorArıkan, Orhan
buir.contributor.orcidArıkan, Orhan|0000-0002-3698-8888en_US


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