
398 RADAR SYSTEMS
Figure 19-8 Real-beam radar mapping.
mapped as it flies along a path (Fig. 19-9), and these snapshots are processed to
make it appear as if the radar antenna has an apparent aperture approximating the
length of the flight path.
Real-beam radars have a cross-range resolution that is set by the range to the
object being mapped and the beamwidth of the antenna:
6CR = ROBw (19-18)
9 9 9 9 9 9 9 9 9 9 i V
Figure 19-9 Side-looking SAR.