Lack of triangularity in SAR interferometric phases

Conference: EUSAR 2014 - 10th European Conference on Synthetic Aperture Radar
06/03/2014 - 06/05/2014 at Berlin, Germany

Proceedings: EUSAR 2014

Pages: 4Language: englishTyp: PDF

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Authors:
De Zan, Francesco; Lopez-Dekker, Paco (German Aerospace Center (DLR), Oberpfaffenhofen, Germany)
Zonno, Mariantonietta (Politecnico di Bari, Italy)

Abstract:
If three SAR images are available, it is possible to form three interferograms. In some cases the phases of the three averaged interferograms will not agree among each other and indicate a sort of phase excess or deficit (which we call "lack of triangularity"). In this paper we illustrate theoretically which models can explain such phenomenon and show some real-data examples. The observation of lack of triangularity might be useful to derive informations on the target and also as a warning that the scatterer presents a temporal covariance matrix which is not intrinsically real.