A synthetic aperture radar (SAR) for a moveable platform includes an antenna,
a
radar transmitter and radar receiver cooperating with the antenna. A radar processor
is connected to the radar transmitter and radar receiver to account for the Faraday
rotation introduced by propagation through the ionosphere by estimating an individual
ionospheric distortion for each received echo pulse based upon a measured Faraday
rotation, and reducing the ionospheric distortion for each received echo pulse
based upon the estimated individual ionospheric distortion associated therewith
for providing a compensated echo pulse.
