Impact of Deep Soil Layer on Terrestrial Microwave Emission for a Bare Agricultural Field

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dc.contributor.authorDogusgen (Erbas), Cihan
dc.coverage.issue3cs
dc.coverage.volume26cs
dc.date.accessioned2017-09-15T08:41:54Z
dc.date.available2017-09-15T08:41:54Z
dc.date.issued2017-09cs
dc.description.abstractIn this study, we investigated the deep (semi-infinite) soil contribution to the brightness temperature at 1.4 GHz calculated through a modified incoherent radiative transfer model. We reproduced the measured brightness temperature collected by a dual L-band radiometer in a bare agricultural field. We found that exclusion of a semi-infinite soil layer in the incoherent model significantly decreased the brightness temperature when the measurement depth in the model was closer to the emitting depth, which is the first few centimeters from the top of soil. The maximum brightness temperature differences between the cases with and without the semi-infinite layer in the incoherent model were computed to be 6.8444 K, 2.8891 K, 0.2477 K and 0.0004 K for the measurement depths of 4 cm, 5 cm, 8 cm and 16 cm, respectively. Based on a comparison with another coherent radiative transfer model, we observed that inclusion of the deep soil layer significantly improved the precision of the incoherent model regardless of the measurement depth. Our results could be one example of improving the accuracy of radiative transfer models, which might be applied to other radiative transfer models and increase the precision of soil moisture retrieval calculations.en
dc.formattextcs
dc.format.extent721-727cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2017 vol. 26, č. 3, s. 721-727. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2017.0721en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/69970
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2017/17_03_0721_0727.pdfcs
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectRadiative transfer modelen
dc.subjectsoil moistureen
dc.subjectbare soilen
dc.subjectincoherent modelen
dc.subjectbrightness temperatureen
dc.subjectmicrowave radiometryen
dc.titleImpact of Deep Soil Layer on Terrestrial Microwave Emission for a Bare Agricultural Fielden
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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