| Abstract: | The various technologies presented herein relate to identification and
mitigation of spurious energies or signals (aka "spurs") in radar
imaging. Spurious energy in received radar data can be a consequence of
non-ideal component and circuit behavior. Such behavior can result from
I/Q imbalance, nonlinear component behavior, additive interference (e.g.
cross-talk, etc.), etc. The manifestation of the spurious energy in a
radar image (e.g., a range-Doppler map) can be influenced by appropriate
pulse-to-pulse phase modulation. Comparing multiple images which have
been processed using the same data but of different signal paths and
modulations enables identification of undesired spurs, with subsequent
cropping or apodization of the undesired spurs from a radar image. Spurs
can be identified by comparison with a threshold energy. Removal of an
undesired spur enables enhanced identification of true targets in a radar
image. |