title: Soil Moisture Profile Effect on Radar Signal Measurement.
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.
authors.affiliation: CETP/CNRS, 10-12 av. de l'Europe, 78140 Vélizy, France. aurelie.lemorvan@cetp.ipsl.fr.
authors.forename: Aurélie
authors.initials: A
authors.lastname: Le Morvan
authors.affiliation: CETP/CNRS, 10-12 av. de l'Europe, 78140 Vélizy, France. zribi@cetp.ipsl.fr.
authors.forename: Mehrez
authors.initials: M
authors.lastname: Zribi
authors.affiliation: Bureau de Recherches Géologiques et Minières (BRGM), 3- av. C. Guillemin, B.P. 6009, 45060 Orléans cedex 2, France.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Baghdadi
authors.affiliation: INRA-Avignon, Centre de Recherches d'Avignon Domaine Saint Paul , Site Agroparc 84914 Avignon cedex 9, France.
authors.forename: André
authors.initials: A
authors.lastname: Chanzy
keywords: ASAR-ENVISAT; IEM; Soil moisture; permittivity profile