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A distributed scatterer interferometry approach for precision monitoring of known surface deformation phenomena

Goel, Kanika and Adam, Nico (2014) A distributed scatterer interferometry approach for precision monitoring of known surface deformation phenomena. IEEE Transactions on Geoscience and Remote Sensing, 52 (9), pp. 5454-5468. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/TGRS.2013.2289370. ISSN 0196-2892.

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Official URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6679273


This paper presents a new technique for mapping mean deformation velocity in highly decorrelated areas with known deformation patterns, exploiting high resolution SAR data. The implemented method is based on distributed scatterers (DSs) and first makes use of the Anderson-Darling (AD) statistical test to identify homogenous patches of pixels based on SAR amplitude images. Then, a robust object adaptive parameter estimation is performed to estimate the local gradients of deformation velocity and the local gradients of residual DEM in range and azimuth directions for these patches, utilizing small baseline differential interferograms. And finally, the information obtained from different patches is connected to get the deformation velocity, via a two-dimensional model-based deformation integration using Bayesian inference. Compared to published multitemporal interferometric work, the main advantage of the newly developed algorithm is that it does not require any phase unwrapping and because of this, the method is largely insensitive to decorrelation phenomenon occurring in natural terrains and the availability of persistent scatterers (PSs), in contrast to the coherent stacking techniques such as Persistent Scatterer Interferometry (PSI), Small Baseline Subset Algorithm (SBAS) and SqueeSAR. The method is computationally inexpensive with respect to SqueeSAR, as only the small baseline interferograms are used for the processing. The method provides spatially dense deformation velocity maps at a suitable object resolution, as compared to a few measured points provided by the stacking techniques in difficult decorrelated regions. High Resolution Spotlight TerraSAR-X dataset of Lueneburg in Germany is used as a processing example of this technique.

Item URL in elib:https://elib.dlr.de/88685/
Document Type:Article
Title:A distributed scatterer interferometry approach for precision monitoring of known surface deformation phenomena
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Goel, KanikaKanika.Goel (at) dlr.deUNSPECIFIED
Adam, NicoNico.Adam (at) dlr.deUNSPECIFIED
Date:September 2014
Journal or Publication Title:IEEE Transactions on Geoscience and Remote Sensing
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1109/TGRS.2013.2289370
Page Range:pp. 5454-5468
EditorsEmailEditor's ORCID iD
Plaza, Antonio J.aplaza@unex.esUNSPECIFIED
Publisher:IEEE - Institute of Electrical and Electronics Engineers
Keywords:Differential Interferometric SAR (DInSAR), Distributed Scatterer (DS), High Resolution SAR, Small Baseline Subset Algorithm (SBAS), SqueeSAR, TerraSAR-X
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Vorhaben hochauflösende Fernerkundungsverfahren (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Goel, Kanika
Deposited On:09 Apr 2014 12:38
Last Modified:08 Mar 2018 18:34

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