A SAR interferometric model for soil moisture

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

Research output: Contribution to journalArticleScientificpeer-review

65 Citations (Scopus)


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 languageEnglish
Article number6472061
Pages (from-to)418-425
Number of pages8
JournalIEEE Transactions on Geoscience and Remote Sensing
Issue number1
Publication statusPublished - Jan 2014
Externally publishedYes


  • Coherence
  • Soil moisture
  • Synthetic aperture radar (SAR) interferometry

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