Furuno WR2120 Operator's Manual page 76

Additional explanation:
The weather radar has narrow beam called "pencil beam". Both horizontal and vertical planes on beam width
of pencil beam are the same.
In order to capture accurate data it is necessary to scan hemisphere over the radar while changing its
elevation angle as shown on Figure 5.1.
The WR2120 radar will output the data files for each elevation angle. When using eight elevation angles,
eight data files will be generated that will require up to 15.55784 MB, however this depends on settings.
Requirement of the data transfer speed is decided by the time span needed to make one set of volume scan
data. This time span will depend on the scanning speed of antenna.
Within this document we present some examples of scanning strategies and generated data size
calculations. The minimum transfer speed requirement will be calculated using these total file sizes and the
time span of one volume scan.
9km
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3km
2km
1km
Figure 5.1: Basic volume scan
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