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Spectral replacement to mitigate interference for multi-pass synthetic aperture radar

United States Patent

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10,495,750
December 3, 2019
View the Complete Patent at the US Patent & Trademark Office
Various technologies for mitigating interference artifacts in multi-pass synthetic aperture radar (SAR) imagery are described herein. First and second phase histories corresponding to first and second SAR passes over a scene are processed in image and phase-history domains to correct for spatially-variant and constant phase offsets between the phase histories that can be caused by known and unknown variations in motion of a SAR platform between passes. Data samples from one phase history can then be replaced with data samples from the other phase history to remove artifacts and distortions caused by sources of interference in the scene.
15/351,949
November 15, 2016
1/1;
G01S 13/90 (20060101);
;342/25F
STATEMENT OF GOVERNMENTAL INTEREST This invention was developed under Contract DE-AC04-94AL85000 between Sandia Corporation and the U.S. Department of Energy. The U.S. Government has certain rights in this invention.