This panel illustrates the radar-measurement geometry showing the range and Doppler contours.  The real aperture radar footprint ellipse is shown at two representative azimuth-scan angles.  The radar 1-MHz bandwidth yields a ground-range resolution of ~250 m.  The doppler diversity is maximum at a scan angle perpendicular to the satellite velocity (swath edge), leading to an azimuth single-look resolution of ~450 m. The single-look resolution degrades as the scan angles approaches the satellite velocity vector.  Image Credit : NASA/JPL.
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