Conference paper
P-band radar ice sounding in Antarctica
National Space Institute, Technical University of Denmark1
Microwaves and Remote Sensing, National Space Institute, Technical University of Denmark2
IT-Department, National Space Institute, Technical University of Denmark3
Geodynamics, National Space Institute, Technical University of Denmark4
European Space Agency - ESA5
In February 2011, the Polarimetric Airborne Radar Ice Sounder (POLARIS) was flown in Antarctica in order to assess the feasibility of a potential space-based radar ice sounding mission. The campaign has demonstrated that the basal return is detectable in areas with up to 3 km thick cold ice, in areas with up to several hundred meters thick warm shelf ice, and in areas with up to 700 m thick crevassed glacier ice.
However, major gaps in the basal return are observed, presumably due to excessive absorption, scattering from ice inclusions in the firn, low basal reflectivity, and the masking effect of the surface clutter. Internal layers are observed down to depths exceeding 2 km. The polarimetric data show that the internal layers are strongly anisotropic at a ridge, where the ice flow is supposed to be highly unidirectional.
In case of space-based ice sounding, the antenna pattern cannot offer sufficient surface clutter suppression, but improved clutter suppression has been demonstrated with novel multi-phase-center techniques.
Language: | English |
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Publisher: | IEEE |
Year: | 2012 |
Pages: | 1561-1564 |
Proceedings: | 2012 IEEE International Geoscience and Remote Sensing SymposiumIEEE International Geoscience and Remote Sensing Symposium |
Series: | Ieee International Geoscience and Remote Sensing Symposium |
ISBN: | 1467311588 , 1467311596 , 146731160X , 146731160x , 9781467311588 , 9781467311595 and 9781467311601 |
ISSN: | 21537003 and 21536996 |
Types: | Conference paper |
DOI: | 10.1109/IGARSS.2012.6351098 |
ORCIDs: | Dall, Jørgen , Kusk, Anders , Kristensen, Steen Savstrup , Nielsen, Ulrik and Forsberg, René |
Antarctica Attenuation Clutter P-band Polarimetry Radar Sounding
Ice P-band radar ice sounding Polarimetric Airborne Radar Ice Sounder Radar polarimetry Spaceborne radar antenna pattern antenna radiation patterns attenuation basal return clutter cold ice crevassed glacier ice geophysical techniques glaciology ice ice flow ice inclusions internal layers low basal reflectivity masking effect multiphase-center techniques polarimetric data polarimetry potential space-based radar ice sounding mission radar clutter radar polarimetry sounding spaceborne radar surface clutter suppression warm shelf ice