Weather Radar - INSIGHT STRIKE FINDER Pilot's Manual

STRIKE FINDER
Figure 40. Radar Suffering Attenuation

Weather Radar

The weather radar system sweeps a narrow and highly directional beam
of energy, in a lateral arc of 90 or 120-degrees in front of the aircraft. A
portion of the beam energy is reflected by the water droplets and returns
to the antenna. The precipitation density is measured and then painted on
the radar screen as precipitation levels as shown in Table 3 (p.49).
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DIGITAL WEATHER AVOIDANCE
PILOT'S GUIDE