Global Positioning System (GPS) Acronyms

Below is a comprehensive of acronyms that you may come across while evaluating GPS technologies and solutions. If you have need further assistance in locating a GPS solution, tell us about the application you are considering.

AAA
ACSM American Congress on Surveying and Mapping
A/D Analog To Digital
ADF Automatic Direction Finder
ADIU Advanced Digital Interface Unit
ADS Automatic Dependent Surveillance
AEEC Airlines Electronics Engineering Committee
AFB Air Force Base
AJ Antijamming
AM Amplitude Modulation
AM/FM Automated Mapping and Facilities Management
AMPS Advanced Mobile Phone Service
AOPA Aircraft Owners And Pilots Association
APA Airline Pilots Association
ARINC Aeronautical Radio Inc.
AS AntiSpoofing
ASF Additional Secondary Factor (Loran-C)
ASPRS American Society of Photogrammetry and Remote Sensing
ATA Air Transport Association
ATC Air Traffic Control
ATON Aids To Navigation
AVL Automatic Vehicle Location
AVLN Automatic Vehicle Location And Navigation
AVM Automatic Vehicle Monitoring

BBB, CCC
BPSK Binary Phase Shift Keying
BBS Bulletin Board Service
C/A Course Acquisition
CAD Computer Aided Design
CCW Coded Continuous Wave
CCZ Coastal And Confluence Zone
CDMA Code Division Multiple Access
CEP Circle Error Probable
CMOS Complementary Metal Oxide Semiconductor
CNES Centre National d'Etudes Spatiale
CNS Communications, Navigation, And Surveillance
COG Course Over Ground
COP Circle Of Position
CONUS Continental United States
CORS Continuously Operating Reference Station
CS Control Segment
CW Continuous Wave

DDD
D/A Digital To Analog
DGPS Differential Global Positioning System
DLL Delay Lock Loop
DMA Defense Mapping Agency
DME Distance Measuring Equipment
DoD Department Of Defense
DOP Dilution Of Precision
DoT Department Of Transportation
DR Dead Reckoning
DRMS Distance Root Mean Square

EEE
ECDIS Electronic Chart Display And Information System
ECEF Earth Centered, Earth Fixed
EDM Electronic Distance Measurement
EGNOS European Geostationary Navigation Overlay Service
EOS Earth Orbiting System
EPROM Erasable Programmable Read-Only Memory
EHF Extremely High Frequency
ETA Estimated Time Of Arrival

FFF
FAA Federal Aviation Administration
FANS Future Air Navigation Systems
FCC Federal Communications Commission
FDMA Frequency Division Multiple Access
FHWA Federal Highway Administration
FM Frequency Modulation
FMS Flight Management Systems
FOC Full Operational Capability
FRP Federal Radionavigation Plan

GGG
GDOP Geometric Dilution Of Precision
GIAC GPS Interagency Advisory Council
GIC GPS Integrity Channel
GIS Geographic Information Systems
GLONASS Global Navigation Satellite System
GMT Greenwich Mean Time
GNSS Global Navigation Satellite Systems
GPS Global Positioning System
GPSIC GPS Information Center

HHH
HDOP Horizontal Dilution Of Precision
HF High Frequency
HHA Harbor And Harbor Approach
HOPE H-II Orbiting Plane (Japan)
HOW Hand Over Word
Hz Hertz

III
IALA International Association Of Lighthouse Authorities
ICAO International Civil Aviation Organization
ICD Interface Control Document
ICS Interim Control Segment
IEEE Institute Of Electrical And Electronics Engineers
IERS International Earth Rotation Service
IFR Instrument Flight Rules
IF Intermediate Frequency
IGEB Interagency GPS Executive Board
IGS International GPS Service
ILS Instrument Landing System
IMO International Maritime Organization
IMU Inertial Measurement Unit
INS Inertial Navigation System
IOC Initial Operational Capability
ION Institute Of Navigation
IRU Inertial Reference Unit
ITRF International Terrestrial Reference Frame
ITS Intelligent Transportation System
ITU International Telecommunication Union
IVHS Intelligent Vehicle Highway Systems

JJJ, KKK, LLL
JPL Jet Propulsion Laboratory
JPO Joint Program Office
KHz Kilohertz
L1 GPS Carrier Frequency, 1575.42 MHz
L2 GPS Carrier Frequency, 1227.6 MHz
LAAS Local Area Augmentation System
LAN Local Area Network
Lat Latitude
Lat/Lon Latitude/Longitude
LCD Liquid Crystal Display
LED Light Emitting Diode
LEO Low Earth Orbit
LIS Land Information System
LF Low Frequency
Lon Longitude
LOP Line Of Position
Loran Long Range Navigation
LOS Line Of Sight

MMM
MCS Master Control Station
MEP Midcontinent Expansion Plan
MF Medium Frequency
MGRS Military Grid Reference System
MHz Megahertz
MLS Microwave Landing System
MOPS Minimum Operational Performance Standards
MSAS MTSAT?Augmentation System
MSK Minimum Shift Keying
MSS Mobile Satellite Service
MTSAT Multifunction Transport Satellite

NNN
NAD North American Datum
NANU Notice Of Advisory To Navstar Users
NAS National Airspace System
NASA National Aeronautics And Space Administration
NATO North Atlantic Treaty Organization
NAV-Msg Navigation Message
NavStar GPS Navigation Satellite Timing And Ranging Global Positioning System
NAVWAR Navigation and Warfare
NDB Nondirectional Beacon
NGS National Geodetic Survey
NIMA National Imaging and Mapping Agency
NIST National Institute of Standards And Technology
Nm Nautical Mile
NMEA National Marine Electronics Association
NNSS Navy Navigation Satellite System (Transit)
NOAA National Oceanic And Atmospheric Administration
NOCUS North Central U.S. Chain (Loran-C)
NOS National Ocean Survey
NRL Naval Research Laboratory
Ns Nanosecond

OOO, PPP
OAB Operational Advisory Broadcasts
OCS Operational Control Segment/System
OCXO Oven-Controlled Crystal Oscillator
OEM Original Equipment Manufacturer
P-Code Precision/Protected Code
PC Personal Computer
PCS Personal Communication System
PDOP Position Dilution Of Precision
PLL Phase-Locked Loop
PPM Parts Per Million
PPS Precise Positioning Service
PPS Pulse Per Second
PSAP Public Service Answering Point
PR Pseudorange
PRN Pseudo Random Noise
PVT Position Velocity And Time

RRR
R&D Research And Development
RAIM Receiver Autonomous Integrity Monitoring
RDF Radio Direction Finder
RDS Radio Data System
RDSS Radio Determination Satellite Systems
RF Radio Frequency
RFI Radio Frequency Interference
RINEX Receiver Independent Exchange (Format)
RMS Root Mean Square
ROV Remotely Operated Vehicle
RTI Road Transport Informatics
RTCA Radio Technical Commission For Aeronautics
RTCA-SC Radio Technical Comission for Aeronautics, Special Committee
RTCM Radio Technical Commission For Maritime Services
RTK Real-Time Kinematic

SSS
SA Selective Availability
SAR Search And Rescue
SAR Syntheticaperture Radar
Sat Nav Satellite Navigation (Transit System)
CAT I Special Category I
SEP Sphere Error Probable
SHF Super High Frequency
SLR Satellite Laser Ranging
SNR Signal To Noise Ratio
SOA Speed Of Advance
SOCUS South Central U.S. Chain (Loran-C)
SOG Speed Over Ground
SOIT Satellite Operational Implementation Team
SPS Standard Positioning Service
SV Space Vehicle
SVN Space Vehicle NAVSTAR, Also Known As Space Vehicle Number

TTT
TACAN Tactical Air Navigation
TAI International Atomic Time
TCXO Temperature-Controlled Crystal Oscillator
TD Time Difference
TDMA Time Division Multiple Access
TDOP Time Dilution Of Precision
TOA Time Of Arrival
TOD Time Of Day
TOPEX The Ocean Topography Experiment
TOW Time Of Week
TSO Technical Standard Order
TSPI Time And Space Position Information
TTFF Time To First Fix
TTL Transistor Transistor Logic

UUU
UAV Unmanned Aerial Vehicle
UE User Equipment
UEE User Equipment Error
UERE User Equivalent Range Error
UHF Ultra High Frequency
URA User Range Accuracy
URE User Range Error
US User Segment
USAF United States Air Force
USCG United States Coast Guard
USGIC US GPS Industry Council
USGS US Geological Survey
USNO US Naval Observatory
UT Universal Time
UTC Coordinated Universal Time
UTM Universal Transverse Mercator
UUD Universal User Defined

VVV
VDOP Vertical Dilution Of Precision
VFR Visual Flight Rules
VGA Video Graphics Array
VHF Very High Frequency
VLBI Very Long Baseline Interferometry
VLF Very Low Frequency
VLM Vehicle Location Monitoring
VME Versa Module Eurocard
VOR VHF Omnidirectional Range
VORTAC VOR And TACAN (collocated)
VSWR Voltage Standing Wave Ratio
VTC Vessel Traffic Center
VTS Vessel Traffic Services

WWW, XXX, YYY, ZZZ
WAAS Wide Area Augmentation System
WADGPS Wide Area Differential Global Positioning System
WAN Wide-Area Network
WGS World Geodetic System
WGS 84 World Geodetic System of 1984v
WRC World Radio Conference