An automatic target association function based on harmonized
criteria avoids the presentation of two target symbols for the same
physical target.
5.30.1 If the target data from AIS and radar tracking
are both available and if the association criteria (e.g. position,
motion) are fulfilled such that the AIS and radar information are
considered as one physical target, then as a default condition, the
activated AIS target symbol and the alphanumeric AIS target data should
be automatically selected and displayed.
5.30.2 The user should have the option to change
the default condition to the display of tracked radar targets and
should be permitted to select either radar tracking or AIS alphanumeric
data.
5.30.3 For an associated target, if the AIS and
radar information become sufficiently different, the AIS and radar
information should be considered as two distinct targets and one activated
AIS target and one tracked radar target should be displayed. No alarm
should be raised.