A SAR interferometric model for soil moisture

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A SAR interferometric model for soil moisture

Journal Article (2014)

Author(s)

Francesco De Zan (Deutsches Zentrum für Luft- und Raumfahrt (DLR))

Alessandro Parizzi (Deutsches Zentrum für Luft- und Raumfahrt (DLR))

Pau Prats-Iraola (Deutsches Zentrum für Luft- und Raumfahrt (DLR))

Paco López-Dekker (Deutsches Zentrum für Luft- und Raumfahrt (DLR))

Coherence Soil moisture Synthetic aperture radar (SAR) interferometry

DOI related publication

https://doi.org/10.1109/TGRS.2013.2241069 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:26fffc00-2bbb-4fc8-86b0-7c3790ab2d02

More Info

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Publication Year

2014

Language

English

Issue number

1

Volume number

52

Article number

6472061

Pages (from-to)

418-425

Downloads counter

162

Abstract

There is a need for scattering models that link quantitatively synthetic aperture radar (SAR) interferometric observables to soil moisture. In this paper, we propose a model based on plane waves and the Born approximation, deriving first the vertical complex wavenumbers in the soil as a function of geometrical and dielectric properties and successively the complex interferometric coherences. It is observed that soil moisture behaves on the phase in a similar way as tomography does, breaking the phase consistency in triplets of interferograms. The proposed model is validated with L-band airborne SAR data; preliminary inversion results based on interferogram triplets and coherence magnitudes are presented.