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Abstract:

Polarimetric soil moisture retrieval is among the main objectives of leading synthetic-aperture-radar satellite missions since it allows to systematically analyze costly-to-obtain polarization information to increase retrieval accuracy. In this letter, we present the results of modeling the L-band entropy (H) and alpha (α) values as a function of soil dielectric constant and roughness using a second-order small-perturbation model to simulate the polarimetric soil backscattering. Modeling results are then compared to bare soil uninhabited aerial vehicle synthetic aperture radar (UAVSAR) data acquired simultaneously to in situ field campaigns in Canada during SMAPVEx12. Our model is able to correctly predict observed ranges of H and α and to consistently model dielectric constant and roughness changes. Nevertheless, a systematic overestimation of α is observed when compared with the analyzed UAVSAR data set. Taking UAVSAR data as benchmark, theoretical reasons for this mismatch are analyzed. © 2015 IEEE.

Registro:

Documento: Artículo
Título:Modeling Bare Soil L-Band Polarimetric H-α Values Using a Second-Order SPM Model
Autor:Morandeira, N.S.; Franco, M.; Barber, M.; Grings, F.
Filiación:Laboratorio de Ecologiá, Teledetección y Ecoinformática, Instituto de Investigación e Ingenieriá Ambiental, Universidad Nacional de San Martín, San-Martín, Argentina
Consejo Nacional de Investigaciones Cientcas y Técnicas (CONICET), Buenos Aires, Argentina
Instituto de Astronomiá y Física Del Espacio (IAFE), CONICET-UBA, Buenos Aires, Argentina
Palabras clave:soil moisture; Synthetic aperture radar (SAR) polarimetry; uninhabited aerial vehicle synthetic aperture radar (UAVSAR); Polarimeters; Radar; Soil moisture; Soils; Synthetic aperture radar; Field campaign; Model results; Retrieval accuracy; Roughness change; Small perturbation models; Soil dielectric constant; Soil moisture retrievals; Uninhabited aerial vehicle; Search engines
Año:2016
Volumen:13
Número:3
Página de inicio:399
Página de fin:403
DOI: http://dx.doi.org/10.1109/LGRS.2016.2516502
Título revista:IEEE Geoscience and Remote Sensing Letters
Título revista abreviado:IEEE Geosci. Remote Sens. Lett.
ISSN:1545598X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1545598X_v13_n3_p399_Morandeira

Referencias:

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Citas:

---------- APA ----------
Morandeira, N.S., Franco, M., Barber, M. & Grings, F. (2016) . Modeling Bare Soil L-Band Polarimetric H-α Values Using a Second-Order SPM Model. IEEE Geoscience and Remote Sensing Letters, 13(3), 399-403.
http://dx.doi.org/10.1109/LGRS.2016.2516502
---------- CHICAGO ----------
Morandeira, N.S., Franco, M., Barber, M., Grings, F. "Modeling Bare Soil L-Band Polarimetric H-α Values Using a Second-Order SPM Model" . IEEE Geoscience and Remote Sensing Letters 13, no. 3 (2016) : 399-403.
http://dx.doi.org/10.1109/LGRS.2016.2516502
---------- MLA ----------
Morandeira, N.S., Franco, M., Barber, M., Grings, F. "Modeling Bare Soil L-Band Polarimetric H-α Values Using a Second-Order SPM Model" . IEEE Geoscience and Remote Sensing Letters, vol. 13, no. 3, 2016, pp. 399-403.
http://dx.doi.org/10.1109/LGRS.2016.2516502
---------- VANCOUVER ----------
Morandeira, N.S., Franco, M., Barber, M., Grings, F. Modeling Bare Soil L-Band Polarimetric H-α Values Using a Second-Order SPM Model. IEEE Geosci. Remote Sens. Lett. 2016;13(3):399-403.
http://dx.doi.org/10.1109/LGRS.2016.2516502