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dc.creatorMartínez de Aguirre Escobar, Alejandroes_ES
dc.creatorÁlvarez-Mozos, Jesúses_ES
dc.creatorLievens, Hanses_ES
dc.creatorVerhoest, Niko E. C.es_ES
dc.date.accessioned2019-02-04T13:49:03Z
dc.date.available2019-07-07T23:00:11Z
dc.date.issued2017
dc.identifier.citationA. Martinez-Agirre, J. Álvarez-Mozos, H. Lievens and N. E. C. Verhoest, "Influence of Surface Roughness Measurement Scale on Radar Backscattering in Different Agricultural Soils," in IEEE Transactions on Geoscience and Remote Sensing, vol. 55, no. 10, pp. 5925-5936, Oct. 2017. doi: 10.1109/TGRS.2017.2717043en
dc.identifier.issn0196-2892 (Print)
dc.identifier.issn1558-0644 (Electronic)
dc.identifier.urihttps://hdl.handle.net/2454/32128
dc.description.abstractSoil surface roughness strongly affects the scattering of microwaves on the soil surface and determines the backscattering coefficient (σ 0 ) observed by radar sensors. Previous studies have shown important scale issues that compromise the measurement and parameterization of roughness especially in agricultural soils. The objective of this paper was to determine the roughness scales involved in the backscattering process over agricultural soils. With this aim, a database of 132 5-m profiles taken on agricultural soils with different tillage conditions was used. These measurements were acquired coinciding with a series of ENVISAT/ASAR observations. Roughness profiles were processed considering three different scaling issues: 1) influence of measurement range; 2) influence of low-frequency roughness components; and 3) influence of high-frequency roughness components. For each of these issues, eight different roughness parameters were computed and the following aspects were evaluated: 1) roughness parameters values; 2) correlation with σ 0 ; and 3) goodness-of-fit of the Oh model. Most parameters had a significant correlation with σ 0 especially the fractal dimension, the peak frequency, and the initial slope of the autocorrelation function. These parameters had higher correlations than classical parameters such as the standard deviation of surface heights or the correlation length. Very small differences were observed when longer than 1-m profiles were used as well as when small-scale roughness components (<;5 cm) or large-scale roughness components (>100 cm) were disregarded. In conclusion, the medium-frequency roughness components (scale of 5-100 cm) seem to be the most influential scales in the radar backscattering process on agricultural soils.en
dc.description.sponsorshipThis work was supported in part by the Spanish Ministry of Economy and Competitiveness under Grant BES-2012-054521, Project CGL2011-24336, Project CGL2015-64284-C2-1-R, and Project CGL2016-75217-R (MINECO/FEDER, EU).en
dc.format.extent12 p.
dc.format.mimetypeapplication/pdfen
dc.language.isoengen
dc.publisherIEEEen
dc.relation.ispartofIEEE Transactions on Geoscience and Remote Sensing, vol 55, nº 10, october 2017en
dc.rights© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.en
dc.subjectAgricultureen
dc.subjectRough surfaceen
dc.subjectScatteringen
dc.subjectSoilen
dc.subjectSynthetic aperture radar (SAR)en
dc.titleInfluence of surface roughness measurement scale on radar backscattering in different agricultural soilsen
dc.typeArtículo / Artikuluaes
dc.typeinfo:eu-repo/semantics/articleen
dc.contributor.departmentUniversidad Pública de Navarra. Departamento de Proyectos e Ingeniería Rurales_ES
dc.contributor.departmentNafarroako Unibertsitate Publikoa. Landa Ingeniaritza eta Proiektuak Sailaeu
dc.contributor.departmentUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. ISFOOD - Institute for Innovation and Sustainable Development in Food Chaines_ES
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.embargo.terms2019-07-07
dc.identifier.doi10.1109/TGRS.2017.2717043
dc.relation.projectIDinfo:eu-repo/grantAgreement/ES/6PN/CGL2011-24336en
dc.relation.projectIDinfo:eu-repo/grantAgreement/ES/1PE/GL2015-64284-C2-1-Ren
dc.relation.projectIDinfo:eu-repo/grantAgreement/ES/1PE/CGL2016-75217en
dc.relation.publisherversionhttps://dx.doi.org/10.1109/TGRS.2017.2717043
dc.type.versionVersión aceptada / Onetsi den bertsioaes
dc.type.versioninfo:eu-repo/semantics/acceptedVersionen


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