User Manual

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