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000011777 0247_ $$2DOI$$a10.1109/TGRS.2009.2031907
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000011777 041__ $$aeng
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000011777 084__ $$2WoS$$aGeochemistry & Geophysics
000011777 084__ $$2WoS$$aEngineering, Electrical & Electronic
000011777 084__ $$2WoS$$aRemote Sensing
000011777 1001_ $$0P:(DE-HGF)0$$aMinet, J.$$b0
000011777 245__ $$aSoil Surface Water Content Estimation by Full-Waveform GPR Signal Inversion in the Presence of Thin Layers
000011777 260__ $$aNew York, NY$$bIEEE$$c2010
000011777 300__ $$a1138 - 1150
000011777 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000011777 3367_ $$2BibTeX$$aARTICLE
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000011777 3367_ $$2DRIVER$$aarticle
000011777 440_0 $$017961$$aIEEE Transactions on Geoscience and Remote Sensing$$v48$$x0196-2892$$y3
000011777 500__ $$aThis work was supported in part by the Belgian Science Policy Office in the frame of the Stereo II Programme-project SR/00/100 (HYDRASENS) and in part by Fonds de la Recherche Scientifique, Belgium.
000011777 520__ $$aWe analyzed the effect of shallow thin layers on the estimation of soil surface water content using full-waveform inversion of off-ground ground penetrating radar (GPR) data. Strong dielectric contrasts are expected to occur under fast wetting or drying weather conditions, thereby leading to constructive and destructive interferences with respect to surface reflection. First, synthetic GPR data were generated and subsequently inverted considering different thin-layer model configurations. The resulting inversion errors when neglecting the thin layer were quantified, and then, the possibility to reconstruct these layers was investigated. Second, laboratory experiments reproducing some of the numerical experiment configurations were conducted to assess the stability of the inverse solution with respect to actual measurement and modeling errors. Results showed that neglecting shallow thin layers may lead to significant errors on the estimation of soil surface water content (Delta theta > 0.03 m(3)/m(3)), depending on the contrast. Accounting for these layers in the inversion process strongly improved the results, although some optimization issues were encountered. In the laboratory, the proposed full-waveform method permitted to reconstruct thin layers with a high resolution up to 2 cm and to retrieve the soil surface water content with an rmse less than 0.02 m(3)/m(3), owing to the full-waveform inverse modeling. These results suggest that the proposed GPR approach is promising for field-scale mapping of soil surface water content of nondispersive soils with low electrical conductivity and for instances when soil layering is encountered.
000011777 536__ $$0G:(DE-Juel1)FUEK407$$2G:(DE-HGF)$$aTerrestrische Umwelt$$cP24$$x0
000011777 588__ $$aDataset connected to Web of Science
000011777 65320 $$2Author$$aDielectric properties
000011777 65320 $$2Author$$adigital soil mapping
000011777 65320 $$2Author$$aground penetrating radar (GPR)
000011777 65320 $$2Author$$ainverse modeling
000011777 65320 $$2Author$$asoil layering
000011777 65320 $$2Author$$asoil water content
000011777 650_7 $$2WoSType$$aJ
000011777 7001_ $$0P:(DE-Juel1)VDB54976$$aLambot, S.$$b1$$uFZJ
000011777 7001_ $$0P:(DE-HGF)0$$aSlob, E.C.$$b2
000011777 7001_ $$0P:(DE-HGF)0$$aVanclooster, M.$$b3
000011777 773__ $$0PERI:(DE-600)2027520-1$$a10.1109/TGRS.2009.2031907$$gVol. 48, p. 1138 - 1150$$p1138 - 1150$$q48<1138 - 1150$$tIEEE transactions on geoscience and remote sensing$$v48$$x0196-2892$$y2010
000011777 8567_ $$uhttp://dx.doi.org/10.1109/TGRS.2009.2031907
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000011777 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
000011777 9141_ $$y2010
000011777 9131_ $$0G:(DE-Juel1)FUEK407$$aDE-HGF$$bErde und Umwelt$$kP24$$lTerrestrische Umwelt$$vTerrestrische Umwelt$$x0
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