Polarimetric SAR model for soil moisture estimation over vineyards at C-band

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Title: Polarimetric SAR model for soil moisture estimation over vineyards at C-band
Authors: Ballester Berman, Josep David | Vicente-Guijalba, Fernando | Lopez-Sanchez, Juan M.
Research Group/s: Señales, Sistemas y Telecomunicación
Center, Department or Service: Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal
Keywords: Polarimetric SAR model | Soil moisture estimation | Vineyards | C-band
Knowledge Area: Teoría de la Señal y Comunicaciones
Issue Date: 9-Oct-2013
Publisher: EMW Publishing
Citation: J. D. Ballester-Berman, F. Vicente-Guijalba, and J. M. Lopez-Sanchez, "Polarimetric SAR model for soil moisture estimation over vineyards at c-band," Progress In Electromagnetics Research, Vol. 142, 639-665, 2013. doi:10.2528/PIER13071702
Abstract: In this paper we propose a two-component polarimetric model for soil moisture estimation on vineyards suited for C-band radar data. According to a polarimetric analysis carried out here, this scenario is made up of one dominant direct return from the soil and a multiple scattering component accounting for disturbing and nonmodeled signal fluctuations from soil and short vegetation. We propose a combined X-Bragg/Fresnel approach to characterize the polarized direct response from soil. A validation of this polarimetric model has been performed in terms of its consistency with respect to the available data both from RADARSAT-2 and from indoor measurements. High inversion rates are reported for different phenological stages of vines, and the model gives a consistent interpretation of the data as long as the volume component power remains about or below 50% of the surface contribution power. However, the scarcity of soil moisture measurements in this study prevents the validation of the algorithm in terms of the accuracy of soil moisture retrieval and an extensive campaign is required to fully demonstrate the validity of the model. Different sources of mismatches between the model and the data have been also discussed and analyzed.
Sponsor: This work was supported by the Spanish Ministry of Economy and Competitiveness (MINECO) and EU FEDER, under Project TEC2011-28201-C02-02.
URI: http://hdl.handle.net/10045/33691
ISSN: 1070-4698 (Print) | 1559-8985 (Online)
DOI: 10.2528/PIER13071702
Language: eng
Type: info:eu-repo/semantics/article
Rights: © Copyright 2013 EMW Publishing. All Rights Reserved
Peer Review: si
Publisher version: http://dx.doi.org/10.2528/PIER13071702
Appears in Collections:INV - SST - Artículos de Revistas

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