Appendix B - Abbreviations
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1575 - Guidelines for Shipborne Position, Navigation And Timing (PNT) Data Processing – (16 June 2017) - Annex - Guidelines for Shipborne Position, Navigation and Timing (PNT) Data Processing - Appendix B - Abbreviations

Appendix B - Abbreviations

ADC - Analog-Digital-Converter
AIS - Automatic Identification System
BAM - Bridge Alert Management
BDS - BEIDOU Satellite Navigation System – Chinese GNSS
CCRP - Consistent Common Reference Point
CCRS - Consistent Common Reference System
CMDS - Common Maritime Data Structure
COG - Course over Ground
CTW - CTW – Course Through Water
DGNSS - Differential GNSS
DOP - A statistical measure of the receiver-satellite(s) geometry
ECDIS - Electronic Chart Display and Information System
EDAS - EGNOS Data Access Service
EGNOS - European Geostationary Navigation Overlay Service
eLoran - Enhanced Loran
ENC - Electronic Navigational Chart
EPFS - Electronic Position Fixing System
FDE - Fault Data Exclusion
GAGAN - GPS-aided Geo-augmented Navigation system – Indian SBAS
GAL - Galileo – European GNSS
GBAS - Ground-Based Augmentation System
GLONASS -- GLObal NAvigation Satellite System – GNSS provided by Russia
GNSS - Global Navigation Satellite System
GPS - Global Positioning System – GNSS provided by USA
HDG - Heading
HDOP - Horizontal Dilution of Precision
HPE -- Horizontal Position Error
HPL - Horizontal Protection Level (as estimate of HPE)
HSC - High-Speed Craft
HW - Hardware
I - Integrity data
IRNSS - Indian Regional Navigation Satellite System
INS - Integrated Navigation System
LF - Low Frequency
Loran - Long Range Navigation
MF - Medium Frequency
MSAS - MTSAT (Multi-functional Transport SATellite) Satellite Augmentation System – Japanese SBAS
MSC - IMO's Maritime Safety Committee
NAV - IMO's Safety of Navigation Sub-Committee
NCSR - IMO's Navigation, Communication and Search and Rescue Sub-Committee
NMEA - National Marine Electronics Association
PDOP - Position Dilution of Precision
PNT - Position, Navigation, and Timing
PNT-DP - Position, Navigation, and Timing Data Processing
PNT/I - Position, Navigation, and Time Data including associated integrity data
PNT/S -- Position, Navigation, and Time Data including associated status data
PVT - Position, Velocity, and Timing
PVT-DP - Position, Velocity, and Timing Data Processing
Racon - Radar Beacon
RADAR - Radio Detection and Ranging
RAIM - Receiver Autonomous Integrity Monitoring
ROT - Rate of Turn
RTCM -- Radio Technical Commission for Maritime Services
S - Status data
SBAS - Satellite Based Augmentation System
SDCM - System for Differential Corrections and Monitoring – Russian SBAS
SDME -- Speed and Distance Measuring Equipment
SOG - Speed over Ground
Sonar - Sound Navigation and Ranging
STW - Speed through Water
SW - Software
UERE - User Equivalent Range Error
UTC - Coordinated Universal Time
VHF - Very High Frequency
VPE - Vertical Position Error
WAAS - Wide Area Augmentation System
WGS84 - World Geodetic System 1984
WWRNS - Worldwide Radionavigation Systems
QZSS - Quasi-Zenith Satellite System – Japanese regional system

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