Soil Permittivity Extraction by Time-Domain Free-Space Calibration-Free Microwave Measurements With No Thickness Information

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dc.authorid0000-0002-6098-7762
dc.authorid0000-0002-3518-1943
dc.authorid0000-0003-2214-8092
dc.contributor.authorHasar, Ugur Cem
dc.contributor.authorKorkmaz, Huseyin
dc.contributor.authorKaya, Yunus
dc.contributor.authorIliev, Teodor
dc.date.accessioned2026-02-28T12:17:59Z
dc.date.available2026-02-28T12:17:59Z
dc.date.issued2025
dc.departmentBayburt Üniversitesi
dc.description.abstractAn attractive microwave free-space method is proposed for permittivity extraction of soil samples using calibration-free time-domain measurements. Different from other similar methods in the literature which use the layer-stripping approach in the forward direction in the extraction process, its formalism is based on the layer-stripping approach in the backward direction, whereby allowing extraction of permittivity from interfacial reflection coefficient only without resorting to any thickness information, especially useful for time-domain analysis of multilayer structures having multiple reflection terms. Effects of angle misalignment, loss, and surface roughness on the extraction performance of the proposed method (PM) are analyzed by numerical examples. Permittivity measurements of three low-loss flat solid samples [polypropylene (PP), polyethylene (PE), and polyoxymethylene (POM)] were first performed by a free-space setup operating over 1-18-GHz frequency range to validate our methodology and compare its accuracy against other similar methods in the literature. Thereafter, permittivity measurements of two soil samples sieved with similar and different sizes (coarse- and fine-grained soil samples) by the same free-space setup were then considered to assess the applicability and performance of our method for electromagnetic property analysis of homogeneous and partially inhomogeneous soil samples.
dc.description.sponsorshipEuropean Union (EU)-Next Generation EU, through the National Recovery and Resilience Plan of the Republic of Bulgaria [BG-RRP-2.013-0001]
dc.description.sponsorshipThis work was supported in part by the European Union (EU)-Next Generation EU, through the National Recovery and Resilience Plan of the of under BG-RRP-2.013-0001.
dc.identifier.doi10.1109/TGRS.2025.3572298
dc.identifier.issn0196-2892
dc.identifier.issn1558-0644
dc.identifier.scopus2-s2.0-105005844266
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1109/TGRS.2025.3572298
dc.identifier.urihttps://hdl.handle.net/20.500.12403/6066
dc.identifier.volume63
dc.identifier.wosWOS:001502477100006
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherIeee-Inst Electrical Electronics Engineers Inc
dc.relation.ispartofIeee Transactions on Geoscience And Remote Sensing
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20260218
dc.subjectSoil
dc.subjectTime-domain analysis
dc.subjectTransmission line measurements
dc.subjectSoil measurements
dc.subjectReflection
dc.subjectAntenna measurements
dc.subjectLoss measurement
dc.subjectElectromagnetics
dc.subjectPermittivity measurement
dc.subjectTransmitting antennas
dc.subjectFree space
dc.subjectholder
dc.subjectmicrowave
dc.subjectpermittivity
dc.subjectsoil
dc.subjecttime domain
dc.titleSoil Permittivity Extraction by Time-Domain Free-Space Calibration-Free Microwave Measurements With No Thickness Information
dc.typeArticle

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