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Simrad HS50 Heading Sensor
| 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 |
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 |
| world and has replaced GMT (Greenwich Mean Time) as the |
| official time |
VDOP | Vertical Dilution Of Precision |
VHF | Very High Frequency |
World Geodetic System of 1984 |
4 | 20221081 / F |