JRC JMA-5208, Instruction Manual

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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.
Associated target A target simultaneously representing a tracked target and a reported AIS
target having similar parameters (position, course, speed) which comply
with an association algorithm.
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