Subsurface imaging radar
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United States of America Patent
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Dec 13, 2016
Grant Date -
Nov 19, 2015
app pub date -
Dec 17, 2012
filing date -
Dec 17, 2012
priority date (Note) -
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Abstract
A method and system for obtaining SAR images with reduced or eliminated surface clutter to detect subsurface targets, the method comprising the following steps: —selecting a first frequency and an incidence angle for the radar signal such that the ratio of surface backscattering to subsurface target backscattering is significantly larger for vertical polarization than for horizontal—obtaining vertically and horizontally polarized SAR images based on the same SAR path exploiting the selected first frequency and viewing angle—weighting and differencing the vertically and horizontally polarized SAR images so that the surface backscattering completely cancels between the two images and only the combination of the target backscattering components remains.
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