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Proceedings Paper

Polarization filtering of SAR data
Author(s): Pascale Dubois; Jakob J. van Zyl
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Paper Abstract

In this paper, a systematic theoretical analysis of polarization filtering for a bistatic system is developed for two applications: maximization of signal to noise ratio and discrimination between two target types. The described method finds the optimum receive antenna polarization analytically but relies on a numerical approach to find the optimum transmit antenna polarization. The method uses the Stokes matrix representation, and therefore applies to analyze the partially polarized scattered field from extended targets. Examples of the technique are presented for the NASA CV990 polarimetric L-band radar. Image enhancement filters maximizing the signal-to-noise ratio are developed for different noise characteristics and different target types (urban and forest). A filter is also developed to maximize the power ratio between urban and natural targets. Results show that the filter maximizing the contrast between urban and forest area is essentially the same as the one maximizing the contrast between urban and ocean areas.

Paper Details

Date Published: 12 February 1993
PDF: 12 pages
Proc. SPIE 1748, Radar Polarimetry, (12 February 1993); doi: 10.1117/12.140623
Show Author Affiliations
Pascale Dubois, Jet Propulsion Lab. (United States)
Jakob J. van Zyl, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 1748:
Radar Polarimetry
Harold Mott; Wolfgang-Martin Boerner, Editor(s)

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