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Amplitude Time Series Analysis in Detection of persistent and temporal coherent Scatterers

Ansari, Homa and Adam, Nico and Brcic, Ramon (2014) Amplitude Time Series Analysis in Detection of persistent and temporal coherent Scatterers. In: Proceedings of IGARSS 2014 - Energy and our Changing Planet, pp. 2213-2216. IEEE Xplore. IGARSS 2014, 13-18 July 2014, Quebec City, Canada. doi: 10.1109/IGARSS.2014.6946908. ISBN 978-1-4799-5775-0.

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Official URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6946908


Constraining the deformation analysis to scatterers with high phase coherence, known as persistent scatterers (PS), in the InSAR time series plays a major role in advanced coherent approaches such as Persistent Scatterer Interferometry (PSI). Although crucial in overcoming the shortcomings of conventional InSAR in retrieving the deformation signals, this constraint appears to be too strict and lead to information loss in cases where the scatterers are coherent in merely a short period of the time series. Exploiting such scatterers, referred to as temporal coherent scatterers (TCS), is a necessity in PSI analysis in order to enhance the density of the resulted point clouds and consequently the quality of PSI. In here, statistical properties of the SAR calibrated amplitude time series are exploited to propose a new method for detection of the TCSs and estimation of the coherent intervals. The proposed methodology also allows for estimation of signal to clutter ratio (SCR) as an indication of the phase coherence. The method is evaluated using the simulated SAR stack as well as TerraSAR-X high resolution complex images.

Item URL in elib:https://elib.dlr.de/92808/
Document Type:Conference or Workshop Item (Speech)
Title:Amplitude Time Series Analysis in Detection of persistent and temporal coherent Scatterers
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Ansari, Homahoma.ansari (at) dlr.deUNSPECIFIED
Adam, NicoNico.Adam (at) dlr.deUNSPECIFIED
Brcic, Ramonramon.brcic (at) dlr.deUNSPECIFIED
Date:July 2014
Journal or Publication Title:Proceedings of IGARSS 2014 - Energy and our Changing Planet
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1109/IGARSS.2014.6946908
Page Range:pp. 2213-2216
EditorsEmailEditor's ORCID iD
Publisher:IEEE Xplore
Keywords:Temporal Coherent Scatterer, SCR Estimation, Bayesian estimation, Bayesian model selection, InSAR, PSI
Event Title:IGARSS 2014
Event Location:Quebec City, Canada
Event Type:international Conference
Event Dates:13-18 July 2014
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: Ansari, Homa
Deposited On:28 Nov 2014 12:43
Last Modified:01 Dec 2014 17:48

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