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Radar Abbreviations

RYA 1 DAY RADAR COURSE     RADAR course notes

AIS Automatic Identification System

BCPA Bearing to CPA

C-Up Course up orientation

CPA Closest Point of Approach

EBL Electronic Bearing Line

FTC Fast Time Constant – separates close targets, shows leading edge of eg rain cloud

H-Up Head up orientation

HBR Automatic harbour mode

HBW Horizontal Bearing Width

IR Interference Rejection

MMSI Maritime Mobile Service Identity

MARPA Mini Automatic Radar Plotting

NMEA National Marine Electronics

N-Up North up orientation

OSH Automatic offshore mode

RM Relative motion

SHM Ships Heading Marker

STC Sensitivity Time Control reduces returns from close targets eg Sea Clutter

STDBY Standby

TCPA Time to Closest Point of Approach

TM True motion

TVG Time Variable Gain

TX Transmit

UTC Universal Time Constant

VRM Variable Range Marker

7th May 2011