JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION
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5
5.2.6 Reference Target (Reference)
The system can display the own ship's speed. To do so, it sets a reference target by
tracking a target for which ground fixed.
Procedures
1) Tracking a target for which ground fixed.
2) Put the cursor on the tracked target, and right-click.
The cursor mode list will appear.
• The reference target function is to be used if the own ship's
speed cannot be displayed normally due to trouble such as a
speed sensor malfunction. Do not use the reference target
function except in emergencies.
• If the speed or course of the own ship is changed or a new
reference target is set, the displayed speed may take 3 minutes or
more to reach the specified speed after the speed / course
change or the setting.
• Even after 3 minutes or more has passed, the speed may differ
from the specified speed depending on the tracking condition.
• If a large radar echo such as a land target is set as a reference
target, the vectors of the speed and other tracking targets will not
be displayed correctly and may cause an accident.
• If a sailing ship is set as a reference target, the vectors of the
speed and other tracking targets will not be displayed correctly
and may cause an accident.
• If the is selected for the speed sensor, the AIS function
cannot be turned on.
• If the reference target is lost or the target tracking function is
stopped, the speed sensor is placed in manual mode .
• The loss of a reference target may have a major impact on the
accuracy of the results for true speed and true course of the
target and that own speed will be degraded.
• The reference targets are only used for the calculation of true
speed.
Attentio n
REF.
MAN
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