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Polarimetric Decomposition of L-Band PolSAR Backscattering Over the Austfonna Ice-Cap

Parrella, Giuseppe and Hajnsek, Irena and Papathanassiou, Konstantinos (2016) Polarimetric Decomposition of L-Band PolSAR Backscattering Over the Austfonna Ice-Cap. IEEE Transactions on Geoscience and Remote Sensing, 54 (3), pp. 1267-1281. IEEE - Institute of Electrical and Electronics Engineers. DOI: http://dx.doi.org/10.1109/TGRS.2015.2477168 ISSN 0196-2892

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Official URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7283595

Abstract

Over the last 30 years, the use of airborne and satellite remote sensing techniques has revolutionized glaciology through unequaled improvements in the scale and in the temporal and spatial resolutions of cryospheric observations. In this sense, the introduction of Synthetic Aperture Radars (SARs) likely represents the greatest advance for glaciological applications. This paper describes a novel polarimetric scattering model to interpret polarimetric SAR (PolSAR) measurements of glaciers and ice sheets. Different scattering components are considered according to the specific glacier facies, in order to infer physical parameters of the ice volume. Total backscatter is modelled as the incoherent sum of eventual surface and volume contributions. A new component is introduced to describe differential propagation effects related to firn anisotropy, which is able to interpret polarization phase differences. The developed model is used to perform a polarimetric decomposition of L-band PolSAR data collected by the E-SAR sensor of the German Aerospace Center (DLR) over the Austfonna ice cap, Svalbard, Norway, as part of the ICESAR2007 campaign. Decomposition results are consistent with the information provided by a set of ground measurements about the subsurface structure of the study area and confirm the need of dedicated scattering models for the different glacier zones.

Item URL in elib:https://elib.dlr.de/95178/
Document Type:Article
Title:Polarimetric Decomposition of L-Band PolSAR Backscattering Over the Austfonna Ice-Cap
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Parrella, GiuseppeUNSPECIFIEDUNSPECIFIED
Hajnsek, IrenaUNSPECIFIEDUNSPECIFIED
Papathanassiou, KonstantinosUNSPECIFIEDUNSPECIFIED
Date:March 2016
Journal or Publication Title:IEEE Transactions on Geoscience and Remote Sensing
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:54
DOI :http://dx.doi.org/10.1109/TGRS.2015.2477168
Page Range:pp. 1267-1281
Editors:
EditorsEmail
Plaza, AntonioUNSPECIFIED
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:0196-2892
Status:Published
Keywords:Synthetic aperture radar, Polarimetry, Anisotropic propagation, Particle scattering, Glacier subsurface, Glacier facies
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Multi-dimensionale SAR-Auswertung
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Parrella, Dr. sc. Giuseppe
Deposited On:11 Feb 2015 11:11
Last Modified:08 Mar 2018 18:34

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