Phase Inconsistencies and Multiple Scattering in SAR Interferometry

De Zan, Francesco; Zonno, Mariantonietta; López-Dekker, Paco

Phase Inconsistencies and Multiple Scattering in SAR Interferometry

Journal article (2015)

Authors

Francesco De Zan Deutsches Zentrum für Luft- und Raumfahrt (DLR)

Mariantonietta Zonno Deutsches Zentrum für Luft- und Raumfahrt (DLR)

Paco López-Dekker Deutsches Zentrum für Luft- und Raumfahrt (DLR)

Affiliation

External organisation

Multiple scattering Inconsistency Skewness Closure phase Synthetic aperture radar (SAR) interferometry

To reference this document use:

http://resolver.tudelft.nl/uuid:ce0e5754-08a0-4b9f-8bcf-2c14c72e6418

More Info

expand_more

Published Date

01-12-2015

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Affiliation

External organisation

Abstract

With three coherent synthetic aperture radar images, it is possible to form three interferograms. In some cases, the phases of the three averaged interferograms will be significantly inconsistent and indicate a sort of phase excess or deficit (which we call lack of triangularity or inconsistency). In this paper, we illustrate theoretically which models can explain such phenomenon and provide some real-data examples. It is also shown that two or more independent scattering mechanisms are necessary to explain phase inconsistencies. The observation of lack of consistency might be useful to derive information on the target and as a warning that the scatterer presents a temporal covariance matrix, which is not intrinsically real, with consequences for the processing of interferometric stacks.