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Sensors 2008, 8(1), 256-270; doi:10.3390/s8010256
Article

Soil Moisture Profile Effect on Radar Signal Measurement

1
,
1,* , 2 and 3
1 CETP/CNRS, 10-12 av. de l'Europe, 78140 Vélizy, France 2 Bureau de Recherches Géologiques et Minières (BRGM), 3- av. C. Guillemin, B.P. 6009, 45060 Orléans cedex 2, France 3 INRA-Avignon, Centre de Recherches d'Avignon Domaine Saint Paul , Site Agroparc 84914 Avignon cedex 9, France
* Author to whom correspondence should be addressed.
Received: 22 December 2007 / Accepted: 8 January 2008 / Published: 21 January 2008
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Abstract

The objective of this paper is to analyze the behaviour of a backscattered signalaccording to soil moisture depth over bare soils. Analysis based on experimental verticalmoisture profiles and ASAR/ENVISAT measurements has been carried out. A modifiedIEM model with three permittivity layers (0-1cm, 1-2cm, 2-5cm) has been developed andused in this study. Results show a small effect of moisture profile on the backscatteredsignal (less than 0.5dB). However, measurements and simulations have provided a moredetailed insight into the behaviour of the radar signal and have shown that it was importantto consistently use the same protocol when performing ground truth measurements of soilmoisture.
Keywords: Soil moisture; ASAR-ENVISAT; IEM; permittivity profile Soil moisture; ASAR-ENVISAT; IEM; permittivity profile
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Le Morvan, A.; Zribi, M.; Baghdadi, N.; Chanzy, A. Soil Moisture Profile Effect on Radar Signal Measurement. Sensors 2008, 8, 256-270.

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