Radar Sounder: Cross-Track Polarimetric Selectivity

Conference: EUSAR 2008 - 7th European Conference on Synthetic Aperture Radar
06/02/2008 - 06/05/2008 at Friedrichshafen, Germany

Proceedings: EUSAR 2008

Pages: 4Language: englishTyp: PDF

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Raney, R. Keith (Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD, 20723, USA)

The dominant clutter problem that plagues radar sounding is due primarily from scatterers located to the side of the intended nadir locus. Cross-track clutter can be reduced by taking advantage of polarimetric selectivity. The paper highlights two methods, both of which posit a hybrid-polarity radar that transmits circular polarization, and receives coherently orthogonal linear polarizations. Predicted results range from about 3dB to near total suppression, depending on the differential polarimetric backscattering characteristics of the intended features at depth, and of the offending clutter.