January 2016
Beginner to intermediate
430 pages
22h 38m
English
Content preview from Radar and ARPA Manual
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RADAR AND ARPA MANUAL
Figure 4.5 Guard rings and ARBs
4.2.6 Guard rings and area rejection
boundaries (ARBs)
With this method of acquisition, the usual provision is
for up to two 'rings' (of predetermined depth) plus up to
two area rejection boundaries (ARBs). The rings and
ARBs may be positioned by the operator (Figure 4.5).
When a target is automatically acquired in a guard
zone/guard area, it
is
usual for an alarm to be activated to
attract the operator's attention (see Section4.7.1). The
target activating the alarm will be indicated on the
screen by, for example, a flashing symbol.
In general, automatic acquisition has not been as suc ...
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