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On Some Spectral Properties of TanDEM-X Interferograms Over Forested Areas

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3 Author(s)
De Zan, F. ; Microwaves and Radar Institute, German Aerospace Center (DLR), Wessling, Germany ; Krieger, G. ; Lopez-Dekker, P.

This letter reports about some observations over rainforests (in Brazil and Indonesia), where the spectra of TanDEM-X interferograms show distinct features, almost a signature, which is explained and modeled in terms of the scattering properties. Supported by comparisons with simulations, the observations exclude any homogeneous horizontally layered forest; instead, they are compatible with a model with point scatterers clustered in clouds. Such a model, with high extinction and large gaps that allow significant penetration, is able to explain to a good degree the observations.

Published in:

Geoscience and Remote Sensing Letters, IEEE  (Volume:10 ,  Issue: 1 )