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Quantification of Temporal Decorrelation Effects at L-band for Polarimetric SAR Interferometry Applications

Lee, Seung-Kuk and Kugler, Florian and Papathanassiou, Konstantinos and Hajnsek, Irena (2013) Quantification of Temporal Decorrelation Effects at L-band for Polarimetric SAR Interferometry Applications. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 6 (3), pp. 1351-1367. DOI: 10.1109/JSTARS.2013.2253448. ISSN 1939-1404.

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Abstract

Temporal decorrelation is the most critical issue for the successful inversion of Polarimetric SAR Interferometry (Pol-InSAR) data acquired in an interferometric repeat-pass mode, typical for satellite or lower frequency airborne SAR systems. This paper provides a quantitative estimation of temporal decorrelation effects at L-band for a wide range of temporal baselines based on a unique set of multi-baseline Pol-InSAR data. A new methodology that allows to quantify individual temporal decorrelation components has been developed and applied. Temporal decorrelation coefficients are estimated for temporal baselines ranging from 10 minutes to 54 days and converted to height inversion errors caused by them. The temporal decorrelations of (volume temporal decorrelation) and (ground temporal decorrelation) depend not only on the wind-induced movement but also strongly on the rain-induced dielectric changes in volume and on the ground at temporal baseline on the order of day or longer. At temporal baselines on the order of minutes, the wind speed is a critical parameter and the speed of 2 m/s already hampers the application of Pol-InSAR forest parameter inversion. The approach is supported and validated by using L-band E-SAR repeat-pass data acquired in the frame of three dedicated campaigns, BioSAR 2007, TempoSAR 2008 and TempoSAR 2009.

Document Type:Article
Title:Quantification of Temporal Decorrelation Effects at L-band for Polarimetric SAR Interferometry Applications
Authors:
AuthorsInstitution or Email of Authors
Lee, Seung-KukUNSPECIFIED
Kugler, FlorianUNSPECIFIED
Papathanassiou, KonstantinosUNSPECIFIED
Hajnsek, IrenaUNSPECIFIED
Date:June 2013
Journal or Publication Title:IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:6
DOI:10.1109/JSTARS.2013.2253448
Page Range:pp. 1351-1367
ISSN:1939-1404
Status:Published
Keywords:Polarimetric SAR Interferometry (Pol-InSAR), temporal decorrelation, temporal baseline, height inversion
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Prosmart, Smart-SAR (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Seung-Kuk Lee
Deposited On:07 Dec 2012 18:18
Last Modified:19 Jul 2013 19:22

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