user manual

PRIMUS
r
880
Digital
W
eather
Radar
System
A28-1146-102-00
Radar Facts
5-53
Azimuth Resolution
When two targets, such as storms, are closely adjacent at the
same range, the radar displays them as a single target, as shown in
figure 5-38. However, as the aircraft approaches the targets, they
appear to separate. In the illustration, the airplane is far away from the
targets at position A. At this distance, the beam width is spreading. As
the beam scans across thetwo targets,there isno pointat whichbeam
energy is not reflected, either by one target or the other, because the
space between the targets is not wide enoughto passthe beamwidth.
In target position B, the aircraft is closer to the same two targets; the
beam width is narrower, and the targets separate on the display.
100
60
40
20
INDICATOR DISPLAY A
50
30
20
10
INDICATOR DISPLAY B
A
AD-35705@
B
40
80
Azimuth Resolution in Weather Modes
Figure 5-40