B&G Vulcan Series, Руководство оператора

Страница: 108 / 198

Sensitivity
The guard zone sensitivity can be adjusted to eliminate alarms for
small targets.
MARPA targets
If the system includes a heading sensor, the MARPA function (Mini
Automatic Radar Plotting Aid) can be used to track up to ten radar
targets.
You can set alarms to notify you if a target gets too close. Refer to
"Radar settings" on page 110.
MARPA tracking is an important tool for collision avoidance.
Ú
Note:
MARPA requires heading data for both the radar and the
Vulcan.
MARPA target symbols
The system uses the target symbols shown below.
Acquiring MARPA target. Typically it takes up to 10 full
rotations of the scanner.
Tracking MARPA target, not moving or at anchor.
Tracking and safe MARPA target with extension lines.
Dangerous MARPA target.
A target is defined as dangerous when it enters the guard
zone defined on the radar panel.
When no signals have been received within a time limit a
target will be defined as lost.
The target symbol represents the last valid position of the
target before the reception of data was lost.
Selected MARPA target, activated by positioning the cursor
on the target icon.
The target returns to the default target symbol when the
cursor is removed.
108
Radar | Vulcan Series Operator Manual