JRC JMA-5206, Instruction Manual, Page: 26 / 462

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GLOSSARY
This section describes the main terms used for this equipment and general related maritime terms.
ARPA:
Automatic Radar Plotting Aid.
AZI MODE (Azimuth Stabilization MODE):
Bearing display mode
Anti-clutter rain (FTC):
Rain/snow clutter suppression
Anti-clutter sea (STC):
Sea clutter suppression
ATA:
Automatic Tracking Aid
BCR:
Bow Crossing Range
BCT:
Bow Crossing Time
BRG:
Bearing
CPA (Closest Point of Approach):
The closest point of approach from own ship,
which can be set by the observer.
COG (Course Over Ground):
Course relative to the ground.
CUP (Course-Up):
Own ship’s course is pointed to the top
center of the radar display.
DRIFT:
The current velocity for manual correction
or the current speed on the horizontal axis of
the 2-axis log is displayed.
EBL (Electronic Bearing Line):
An electronic bearing line originated from
own ship’s position.
ENH (Enhance):
A target can be enlarged.
Floating EBL (Floating Electronic Bearing
Line):
Floating electronic bearing line originated
from an arbitrary point.
GND:
Stabilization relative to the ground.
GPS (Global Positioning System):
The position of a GPS receiver can be
determined by the signals from GPS
satellites.
Guard Zone:
Alarm ring against intrusion
HDG (Heading):
Own ship’s heading bearing.
The display ranges from 000 to 360 degrees
as scanned clockwise.
HL (Heading Line):
Ship’s heading line
HUP (Head-Up):
Own ship’s heading line is always pointed to
the top center of the radar display.
IMO:
International Maritime Organization
Interswitch:
A device to switch over two or more radar
display units and two or more antennas.
IR (Interference Rejector):
Radar interference rejector
MRK (Mark):
Reflection plot
NM (Nautical Mile):
1NM=1852m
NSK (North Stabilization Kit):
True bearing unit
NUP (North-Up):
The north is always pointed to the top center
of the radar display.
OWN TRACK:
Display function of own ship’s track
PI:
Parallel index line
PIN:
Information set by the user (personal code)
PM (Performance Monitor):
An additional unit to monitor the transmitted
power and the receiving sensitivity of radar
equipment.
PROC (Process):
Target processing function
PPI :
Plan Position Indicator
Relative Vector:
A target’s movement predicted relative to
own ship.
RR (Range Rings):
Fixed range ring
RM (Relative Motion):
Relative motion presentation
Own ship’s position is fixed and other
targets move relative to own ship.
S/X Band:
Radio frequency bands
S: 3GHz band, X: 9 GHz band