| Abstract: | 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. |