3. TARGET TRACKING (TT)
3-23
3. Acquire the simulated targets after the TT test is performed. The tracking state
changes from unstable to stable and the vector appears. You can simulate the
movement of each function with changing true/relative vector, stabilization
through the water/over the ground, range or length of vector.
4. You can simulate the risk of collision by using the trial maneuver as follows:
1) Set the TT CPA/TCPA alarm. For example, set 0.5 nm for CPA, 30 min for
TCPA.
2) Execute the trial maneuver (see section 3.14). In the static mode, the move-
ments of own ship and the target after the time set as the trial time elapses are
displayed. If the target is dangerous after the time set as the trial time elapses,
its symbol is the one for the dangerous target. Adjust the trial course and trial
delay time so the target symbol does not become the dangerous symbol when
executing the trial maneuver.
3.16 TT Alerts
There are nine situations that cause the TT to trigger visual and audio alerts. To ac-
knowledge the audio alerts, push the ALARM ACK key, or click the [Alert] box.
Alert No. Message Category Description
ALR: 521
ALF: 192,1
TT New Target Warning Tracked target entered the acquisition zone.
ALR: 522
ALF: 10190,4
TT Auto ACQ 95% Caution The capacity for auto acquisition has reached
95%.
ALR: 523
ALF: 190,4
TT Auto ACQ 100% Warning The capacity for auto acquisition has reached
100% and no more target acquisition is pos-
sible. Cancel tracking on unnecessary tar-
gets.
ALR: 524
ALF: 10190,5
TT Man ACQ 95% Caution The capacity for manual acquisition has
reached 95%.
ALR: 525
ALF: 190,5
TT Man ACQ 100% Warning The capacity for manual acquisition has
reached 100% and no more target acquisition
is possible. Cancel tracking on unnecessary
targets.
ALR: 526
ALF: 191,1
TT CPA/TCPA Alarm Tracked target on collision course. Take eva-
sive action.
ALR: 527
ALF: 193,1
TT Lost Warning Tracked target lost. Check target.
ALR: 528
ALF: 193,2
REF Target Lost Warning Tracked target used for speed input is lost. To
continue using reference target for speed in-
put, select another tracked target.
A
S
C
B
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