A SAR Interferometric Model for Soil Moisture

被引：147

作者：

De Zan, Francesco ^{[1
]}

Parizzi, Alessandro ^{[1
]}

Prats-Iraola, Pau ^{[1
]}

Lopez-Dekker, Paco ^{[1
]}

机构：

[1] German Aerosp Ctr DLR, D-82230 Wessling, Germany

来源：

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2014年 / 52卷 / 01期

关键词：

Coherence; soil moisture; synthetic aperture radar (SAR) interferometry; DECORRELATION; SIGNAL;

D O I：

10.1109/TGRS.2013.2241069

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

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.

引用

页码：418 / 425

页数：8

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