Fractional Regularized Distorted Born Iterative Method for Permittivity Reconstruction

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dc.contributor.authorMagdum, Amit
dc.contributor.authorErramshetty, Mallikarjun
dc.contributor.authorJagannath, Ravi Prasad K.
dc.coverage.issue1cs
dc.coverage.volume31cs
dc.date.accessioned2022-04-29T07:44:22Z
dc.date.available2022-04-29T07:44:22Z
dc.date.issued2022-04cs
dc.description.abstractIn this paper, we propose a fractional regularized distorted Born iterative method (DBIM) to solve non-linear ill-posed problems of microwave imaging. Fractional regularization is a modification to Tikhonov regularization, where singular values are weighed with fractional power. As a result, the well-known effect of oversmoothing present in Tikhonov regularization is reduced, thereby the output image quality is improved. The results of this method are compared with standard DBIM using Tikhonov regularization. Various numerical examples of simulated and experimental datasets containing homogeneous as well as heterogeneous scatterers are considered to validate the effectiveness of the proposed approach. It is found that the proposed method improves the accuracy of estimated images over conventional DBIM.en
dc.formattextcs
dc.format.extent62-68cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2022 vol. 31, č. 1, s. 62-68. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2022.0062en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/204150
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2022/22_01_0062_0068.pdfcs
dc.rightsCreative Commons Attribution 4.0 International licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectDistorted Born iterative methoden
dc.subjectfractional regularizationen
dc.subjectill-posed problemen
dc.subjectmicrowave imagingen
dc.subjectTikhonov regularizationen
dc.titleFractional Regularized Distorted Born Iterative Method for Permittivity Reconstructionen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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