JRC JMA-1032, Instruction Manual

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GLOSSARY
GLOSSARY-a
GLOSSARY
This section describes the main terms used for this equipment and general
related maritime terms.
A
AZ Acquisition/Activation zone
A zone set up by the operator in which the system should automatically acquire radar
targets and activate reported AIS targets when entering the zone.
Activated target A target representing the automatic or manual activation of a sleeping target
for the display of additional information.
AIS Automatic Identification System
A system which enables ships and shore stations to obtain identifying and navigation
information about other ships at sea, using an automated transponder.
Anti-clutter rain Rain/snow clutter suppression.
Anti-clutter sea Sea clutter suppression.
AZI Azimuth stabilization mode
B
BCR/BCT Bow Crossing Range and Bow Crossing Time
C
C up Course up
Own ship’s course is pointed to the top center of the radar display.
CCRP The Consistent Common Reference Point
A location on own ship, to which all horizontal measurements such as target
range, bearing, relative course, relative speed, CPA or TCPA are referenced,
typically the
conning position of the bridge.
Clutter Unwanted reflections on a radar screen, from sea surface, rain or snow.
COG Course Over Ground
The direction of the ship's movement relative to the earth, measured on board
the ship, expressed in angular units from true north
CORREL Correlation
CPA/TCPA The distance to the Closest Point of Approach and Time to the Closest Point of
Approach. Limits are set by the operator and are related to own ship.
CTW Course Through Water
The direction of the ship's movement through the water
D
DRIFT The current velocity for manual correction or the current speed on the horizontal
axis of the 2-axis log is displayed.