PRIMUSr 880 Digital Weather Radar System
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 the two targets, there is no point at which beam energy is not reflected, either by one target or the other, because the space between the targets is not wide enough to pass the beam width. 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.
A
B
100
80
60 20 40
INDICATOR DISPLAY A
50
40
30 10 20
INDICATOR DISPLAY B
AD- 35705@
Azimuth Resolution in Weather Modes
Figure 5- 40
A28- 1146- 102- 00 | Radar Facts |
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