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PolInSAR Signatures of Alpine Snow

Morrison, Keith and Rott, Helmut and Nagler, Thomas and Prats, Pau and Rebhan, Helge and Wursteisen, Patrick (2008) PolInSAR Signatures of Alpine Snow. In: Proceedings of the European Conference on Synthetic Aperture Radar (EUSAR), p. 4. VDE Verlag GmbH. European Conference on Synthetic Aperture Radar (EUSAR), 2008-06-02 - 2008-06-05, Friedrichshafen, Germany. ISBN 978-3-8007-3084-1.

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Abstract

Snow cover appears as a key indicator in climate change, and the ability to remotely measure the physical properties of snow is of vital importance. Current model-based approaches used to interpret satellite and airborne data need much stronger experimental confirmation. PolInSAR is a promising emerging technique for the measurement of snow depth. It exploits the polarisation dependence of scattering mechanisms to estimate scattering phase centre heights, which can be extrapolated to retrieve snow depth. Both modelling work and previous experimental campaigns indicate that the X and Ku-bands are particularly suited for retrieving the physical properties of a snow pack as they are sensitive to both the surface and volume characteristics. However, no comprehensive assessment of the operational potential and limitations of PolInSAR are yet available for snow. This work investigates the conditions under which PolInSAR produces accurate results with respect to snow parameters such as structural features and metamorphic state, as well as technical sensor specifications. A field study of the PolInSAR X- and Ku-band response of alpine snow was carried out with the UK’s Ground-Based SAR (GBSAR) system in a measurement campaign in the Austrian Alps during early 2007. Complementary detailed snow state and structural parameters were also recorded, as well as environmental meteorological data. A brief outline of the experimental technique is presented, and an example of an interferometric product.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:PolInSAR Signatures of Alpine Snow
Authors:
AuthorsInstitution or Email of Authors
Morrison, KeithDAPS, Cranfield University, UK
Rott, HelmutENVEO, Austria
Nagler, ThomasENVEO, Austria
Prats, PauUNSPECIFIED
Rebhan, HelgeESA-ESTEC, Netherlands
Wursteisen, PatrickESA-ESTEC, Netherlands
Date:June 2008
Journal or Publication Title:Proceedings of the European Conference on Synthetic Aperture Radar (EUSAR)
Refereed publication:No
In ISI Web of Science:No
Page Range:p. 4
Publisher:VDE Verlag GmbH
ISBN:978-3-8007-3084-1
Status:Published
Keywords:synthetic aperture radar (SAR), Polarimetric SAR Interferometry (PolInSAR), snow
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Friedrichshafen, Germany
Event Type:international Conference
Event Dates:2008-06-02 - 2008-06-05
Organizer:VDE
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 Flugzeug-SAR (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Microwaves and Radar Institute > SAR Technology
Deposited By: Dr. Pau Prats
Deposited On:25 Aug 2008
Last Modified:12 Dec 2013 20:32

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