Wavefront Correction of Ionospherically Propagated HF Radio Waves Using Covariance Matching Techniques

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dc.contributor.authorZhu, Yongpeng
dc.contributor.authorWei, Yinsheng
dc.contributor.authorTong, Peng
dc.coverage.issue1cs
dc.coverage.volume26cs
dc.date.accessioned2017-04-18T08:21:46Z
dc.date.available2017-04-18T08:21:46Z
dc.date.issued2017-04cs
dc.description.abstractHigh Frequency (HF) radio waves propagating in the ionospheric random inhomogeneous media exhibit a spatial nonlinearity wavefront which may limit the performance of conventional high-resolution methods for HF sky wave radar systems. In this paper, the spatial correlation function of wavefront is theoretically derived on condition that the radio waves propagate through the ionospheric structure containing irregularities. With this function, the influence of wavefront distortions on the array covariance matrix can be quantitatively described with the spatial coherence matrix, which is characterized with the coherence loss parameter. Therefore, the problem of wavefront correction is recast as the determination of coherence loss parameter and this is solved by the covariance matching (CM) technique. The effectiveness of the proposed method is evaluated both by the simulated and real radar data. It is shown numerically that an improved direction of arrival (DOA) estimation performance can be achieved with the corrected array covariance matrix.en
dc.formattextcs
dc.format.extent330-336cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2017 vol. 26, č. 1, s. 330-336. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2017.0330en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/64741
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2017/17_01_0330_0336.pdfcs
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectIonospheric irregularitiesen
dc.subjectwavefront distortionen
dc.subjectcovariance matching techniqueen
dc.subjectparticle swarm optimization (PSO)en
dc.titleWavefront Correction of Ionospherically Propagated HF Radio Waves Using Covariance Matching Techniquesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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