Simrad HS50 - Manual (Page 12)

Simrad HS50 Heading Sensor
4
20221081 / F
Abbreviations and acronyms
CEP Circular Error Probability
COG Course Over Ground
DGPS Differential GPS
DU HS50 Display Unit
EPE Estimated Position Error
GPS Global Positioning System
GSA A standard NMEA message including GPS satellite ID
numbers, PDOP, HDOP and VDOP
HDOP Horizontal Dilution Of Precision
HGT GPS Antenna Height above the WGS-84 ellipsoid
IEC International Electrotechnical Commission
IMO International Maritime Organization
I/O Input/Output
NMEA National Marine Electronics Association. NMEA 0183 is a
standard for interchange of information between navigation
equipment
PDOP Positional Dilution Of Precision. This is the sum of the VDOP
and HDOP figure
PSXN20 A proprietary NMEA message including position, height and
heading quality information
PU HS50 Processing Unit
RFI Radio Frequency Interference
RF Radio Frequency
RMS Root Mean Square
ROT Rate of Turn
RRE Range Residual Error, a proprietary format
RTCM Radio Technical Commission of Maritime Services
SOG Speed over Ground
SSB Single Side Band
UTC Universal Time Co-ordinate. This is the official time in the
world and has replaced GMT (Greenwich Mean Time) as the
official time
VDOP Vertical Dilution Of Precision
VHF Very High Frequency
WGS-84 World Geodetic System of 1984