Bistatic Scattering of GPS Signals Off Arctic Sea Ice

This paper evaluates the potential of a global positioning system (GPS) bistatic radar for the retrieval of information concerning the presence and condition of sea ice cover. For this purpose, the permittivity and roughness of a ground scattering target at L-band are extracted from reflected GPS wa...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing 2010-03, Vol.48 (3), p.1548-1553
Main Authors: Rivas, M.B., Maslanik, J.A., Axelrad, P.
Format: Article
Language:English
Subjects:
Applied geophysics
Arctic
Bistatic radar
Earth sciences
Earth, ocean, space
electromagnetic scattering
Exact sciences and technology
Geographic information systems
Global Positioning System
global positioning system (GPS)
Imaging
Information retrieval
Internal geophysics
Marine
Permittivity
Radar scattering
Rough surfaces
Roughness
Satellite navigation systems
Scattering
Sea ice
Sea surface
Spectroradiometers
Surface roughness
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Summary:This paper evaluates the potential of a global positioning system (GPS) bistatic radar for the retrieval of information concerning the presence and condition of sea ice cover. For this purpose, the permittivity and roughness of a ground scattering target at L-band are extracted from reflected GPS waveforms collected from an airborne platform using the Kirchhoff approximation for the surface cross section. The retrieved GPS estimates are then evaluated against collocated measurements of surface roughness obtained from a lidar profiler and a reference classification of sea ice types inferred from a multisensor data set that includes polarimetric microwave emissions, RADARSAT backscatter, and Moderate Resolution Imaging Spectroradiometer infrared/visible imagery.
ISSN:0196-2892
1558-0644
DOI:10.1109/TGRS.2009.2029342