A SAR interferometric model for soil moisture

Francesco De Zan; Alessandro Parizzi; Pau Prats-Iraola; Paco López-Dekker

doi:10.1109/TGRS.2013.2241069

A SAR interferometric model for soil moisture

Francesco De Zan, Alessandro Parizzi, Pau Prats-Iraola, Paco López-Dekker

Research output: Contribution to journal › Article › Scientific › peer-review

65 Citations (Scopus)

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.

Original language	English
Article number	6472061
Pages (from-to)	418-425
Number of pages	8
Journal	IEEE Transactions on Geoscience and Remote Sensing
Volume	52
Issue number	1
DOIs	https://doi.org/10.1109/TGRS.2013.2241069
Publication status	Published - Jan 2014
Externally published	Yes

Keywords

Coherence
Soil moisture
Synthetic aperture radar (SAR) interferometry

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10.1109/TGRS.2013.2241069

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title = "A SAR interferometric model for soil moisture",

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.",

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AU - Parizzi, Alessandro

AU - Prats-Iraola, Pau

AU - López-Dekker, Paco

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AB - 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.

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