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Acronym,Meaning
Acronym,Meaning
A/S,Anti-Spoofing
AAIM,Airborne Autonomous Integrity Monitoring
ABAS,Aircraft Based Augmentation Systems
ACAC,Arab Civil Aviation Commission
ACF,Auto-Correlation Function
ADAS,Advanced Driving Assistance Systems
ADC,Analog to Digital Converter
ADS-B,Automatic Dependent Surveillance-Broadcast
AEP,Architecture Evolution Plan
AF,U.S. Air Force
AF,U.S. Air Force
AFCAC,African Civil Aviation Commission
AFI,Africa-Indian Ocean
AGC,Automatic Gain Control
AHRS,Attitude and Heading Reference Systems
AIS,Automatic Identification System
AIV,Assembly
AL,Alert Limit
AltBOC,Alternative BOC
AM,Amplitude Modulation
AMCS,Alternate Master Control Station
ANSP,Air Navigation Service Provider
ANTEX,ANtenna EXchange format
ANTEX,ANtenna EXchange format
AOA,Airport Operators Association
AOA,Angle Of Arrival
AOAD/M,T Allen Osborne Associates Dorne Margolin Model T  
AOAD/M,T Allen Osborne Associates Dorne Margolin Model T  
AOC,Advanced Operational Capability
AOCS,Attitude and Orbit Control Subsystem
AOR,Atlantic Ocean Region
AP,Access Point
AP,Application Protocol
APC,Antenna Phase Centre
APC,Antenna Phase Centre
APEC,Asia Pacific Economic Cooperation
API,Application Programming Interface
APIRG,AFI Planning and Implementation Regional Group
APPS,Automatic Precise Positioning Service
APV,Approach oPerations with Vertical guidance
APVI,Approach oPerations with Vertical guidance I
APVII,Approach oPerations with Vertical guidance II
AR,Axial Ratio
ARAIM,Advanced RAIM
ARNS,Aeronautical Radio Navigation Service  
ARNS,Aeronautical Radio Navigation Service  
ARP,Antenna Reference Point
ARP,Antenna Reference Point
A/S,Anti-Spoo_ng
ARPA,Automatic Radar Plotting Aids
AS,Anti-Spoofing
ASBC,Advanced Space Business Corporation
ASECNA,from french: Agence pour la Securite de la Navigation Aerienne en Afrique et … Madagascar
ASICs,Applications Secific Integrated Circuit
ASN.1,Abstract Syntax Notation 1
ASQF,Application Specific Qualification Facility
ASZ,Autocorrelation Side-lobe Zero
ATC,Air Traffic Control
ATM,Automated Teller Machine
ATM,Air Traffic Management
ATV,Automated Transfer Vehicle
AUC,African Union Commission
AWGN,Additive White Gaussian Noise
AWOP,All Weather Operations Panel
BC,Before Christ
BCS,Binary Coded Symbols
BDT,BeiDou Time  
BDT,BeiDou Time  
BI,Behavioral Interventions
BIE,Bureau International de l'Heure
BIH,From French: Bureau International de l'Heure
BIPM,Bureau International des Poids et Mesures  
BIPM,Bureau International des Poids et Mesures  
BIE,Bureau International de l'Heure
BLUE,Best Linear Unbiased Minimum-Variance Estimator
BLUE,Best Linear Unbiased Minimum-Variance Estimator
BM,Benchmark
BM,Benchmark
BOC,Binary O_set Carrier
BMCS,Backup Master Control Station
BOC,Binary Offset Carrier
BPSK,Binary Shift Phase Keying  
BPSK,Binary Shift Phase Keying  
BRS,Baricentric Reference System
BRS,Baricentric Reference System
C/A,Coarse/Acquisition
C/A,Coarse/Acquisition
C/NAV,Commercial Navigation Message
CAASD,Center for Advanced Aviation System Development (MITRE)
CAES,Computer Aided Earthmoving System
CAN,Controller Area Network
CAR,Caribbean and South American region
CARERI,Chinese Aeronautical Radio Electronics Research Institute
CASM,Coherent Adaptive Sub-Carrier Modulation
CBCS,Composite Binary Coded Symbols
CBOC,Composite BOC
CCF,Central Control Facility
CCZ,Congestion Charge Zone
CDCM,Coastal Defense Cruise Missile
CDDIS,Crustal Dynamics Data Information System
CDDIS,Crustal Dynamics Data Information System
CDDS,Commercial Data Distribution Service
CDMA,Code Division Multiple Access  
CDMA,Code Division Multiple Access  
CDTI,Cockpit Display of Traffic Information
CEP,Conventional Ephemeris Pole
CEP,Conventional Ephemeris Pole
CEP,Circular Error Probable
CF,Compact Flash
CFSP,Common Foreign and Security Policy
CGCS2000,China Geodetic Coordinate System 2000
CGCS2000,China Geodetic Coordinate System 2000
CGSIC,Civil GPS Service Interface Committee
CHA,Channel of High Accuracy
CHAMP,CHAllenging Minisatellite Payload
CHARS,Customer Hierarchy And Reporting System
CIO,Conventional International Origin
CIO,Conventional International Origin
CIP,Celestial Intermediate Pole
CIR,Cascading Integer Resolution
CIS,Conventional Inertial System
CIS,Conventional Inertial System
CL,Civil Long
CM,Civil Moderate
CMCF,Central Monitoring and Control Facility
CMR,Compact Measurement Record
CMSA,Cruise Missile Support Activity
CNAV,Civil NAVigation message
CNS,Communication Navigation Surveillance
CNSS,Compass Navigation Satellite System
COCESNA,Corporacion Centroamerica de Servicios de Navegacion Aerea
CODE,Centre for Orbit Determination in Europe  
CODE,Centre for Orbit Determination in Europe  
C/NAV,Commercial Navigation Message
CONUS,CONtinental United States
CORS,Continuously Operating Reference Stations  
CORS,Continuously Operating Reference Stations  
COSMIC,Constellation Observing System for Meteorology
CP,Circular Polarization
CPF,Central Processing Facility
CPFPS,Central Processing Facility Processing Set
CPN,Coloured Petri Nets
CPU,Central Processing Unit
CR,Council Resolution
CRC,Cyclic Redundancy Check
CRC,Cyclic Redundancy Check
CRF,Celestial Reference Frame
CRF,Celestial Reference Frame
CRLB,Cramer Rao Lower Bound
CRS,Conventional Celestial Reference System  
CRS,Conventional Celestial Reference System  
CRT,Cathode Ray Tube
CS,Commercial Service  
CS,Commercial Service  
CSA,Channel of Standard Accuracy
CSIM,Constellation Simulator
CSK,Code Shift Keying
CSRS,Canadian Spatial Reference System
CTP,Conventional Terrestrial Pole
CTP,Conventional Terrestrial Pole
CTS,Conventional Terrestrial System
CTS,Conventional Terrestrial System
DCB,Di_erential Code Biases
CW,Continuous Wave
CWAAS,Canadian WAAS
DAB,Digital Audio Broadcasting
DAC,Digital-to-Analog Converters
DASS,Distress Alerting Satellite System
DCB,Differential Code Biases
DDMA,Doppler Division Multiple Access
DEOS,Delft Institute of Earth Observation and Space Systems
DF,Dual Frequency
DGNSS,Differential GNSS
DGPS,Differential GPS
DGRS,DGPS Reference Station
DH,Decision Height
DLL,Delay Lock Loop
DME,Distance Measuring Equipment
DoD,US Department of Defense  
DoD,US Department of Defense  
DOP,Dilution Of Precision
DOP,Dilution Of Precision
DOT,Department Of Transportation
DoY,Day-of-Year
DoY,Day-of-Year
ECEF,"""Earth-Centred "" Earth-Fixed "
DP,Dot Product
DSCS,Defense Satellite Communications System
DSNS,Differential Satellite Navigation Systems
DSP,Digital Signal Processor
DSPN,Direct Sequence Pseudo Noise
DSRC,Dedicated Short-Range Communications
DSSS,Direct Sequence Spread Spectrum
DVP,Development and Verification Platform
EASA,European Aviation Safety Agency
EC,European Commission
ECA,Error Characterization Approach
ECAC,European Civil Aviation Conference
ECAM,Electronic Centralised Aircraft Monitor
ECEF,Earth Centred Earth Fixed  
ECI,Earth Centred Inertial
ECI,Earth Centred Inertial
ECMWF,European Centre for Medium-Range Weather Forecasts
EDAS,EGNOS Data Access System
EDS,EGNOS Data Server
EEGS,EGNOS Extension to Eastern Europe
EETS,European Electronic Tolling Service
EFC,Electronic Fee Collection
EFIS,Electronic Flight Instrument System
EGNOS,European Geostationary Navigation Overlay System
EGNOS,European Geostationary Navigation Overlay System
EICAS,Engine Indications and Crew Alerting System
EIRP,Effective Isotropic Radiated Power
E-L,Early-Late
ELT,Emergency Location Terminal
EMLP,Early Minus Late Power
EMP,Electro-Magnetic Pulse
EMR,Energy Mines and Resources  
EMR,Energy Mines and Resources  
EMT,Effective Monitor Threshold
ENC,European Navigation Conference
ENT,EGNOS Network Time
ENU,East North Up
ENU,East North Up
EOL,End-Of-Life
EOP,Earth Orientation Parameters
EOP,Earth Orientation Parameters
EPFS,Electronic Position Fixing System
EPIRB,Emergency Position Indicating Radio Beacons
EPPP,Enhanced Precise Point Positioning
ERIS,External Regional Integrity Services
ERP,Earth Rotation Parameters
ERP,Earth Rotation Parameters
ERTMS,European Rail Traffic Management System
ESA,European Space Agency
ESA,European Space Agency
ESDP,European Security and Defence Policy
ESOC,European Space Operations Centre
ESSP,European Satellite Service Provider
ESTB,EGNOS Test Bed
ET,Ephemeris Time  
ET,Ephemeris Time  
ETA,Estimated Time of Arrival
ETC,Electronic Tolling Collection
ETCS,European Train Control System
ETML,European Traffic Management Layer
ETSO,European Technical Standard Order
EU,European Union
EuCAP,European Conference on Antennas and Propagation
EWAN,EGNOS Wide Area Network
F/NAV,Freely accessible Navigation Message
FAA,Federal Aviation Administration
FAS,Final Approach Segments
FDE,Fault Detection and Exclusion
FDF,Flight Dynamics Facility
FDMA,Frequency Division Multiple Access  
FDMA,Frequency Division Multiple Access  
FEC,Forward Error Correction
FEC,Forward Error Correction
FH,Faded-Harmonics
FIR,Flight Information Region
FIR,Finite Impulse Response
FKP,From German: Flaechen Korrektur Parameter
FLL,Frequency Lock Loop
FM,Frequency Modulation
FMS,Flight Management System
FOC,Full Operational Capability
FOC,Full Operational Capability
F/NAV,Freely accessible Navigation Message
FOP,Final Operational Phase
FPGA,Field Programmable Gate Array
F-PPP,Fast Precise Point Positioning  
F-PPP,Fast Precise Point Positioning  
FTP,File Transfer Protocol
G/NAV,Governmental Navigation Message
GA,Ground Antennas  
GA,Ground Antennas  
gAGE,Research group of Astronomy and Geomatics
GACF,Ground Assets Control Facility
GADEROS,Galileo Demonstrator for Railway Operation System
gAGE,Research group of Astronomy and GEomatics
GAST,Greenwich Apparent Sidereal Time  
GAST,Greenwich Apparent Sidereal Time  
GBAS,Ground-Based Augmentation System
GCC,Ground Control Centres
GCC,Ground Control Centres
GCS,Ground Control Segment
GCS,Ground Control Segment
GDOP,Geometric Dilution Of Precision  
GDOP,Geometric Dilution Of Precision  
GEAS,GNSS Evolutionary Architecture Study
GEO,Geostationary Orbit
GESS,Galileo Experimental Sensor Stations
GGSP,Galileo Geodetic Service Provider  
GGSP,Galileo Geodetic Service Provider  
GIOVE,Galileo In-Orbit Validation
GIC,GNSS/Ground Integrity Channel
GIM,Global Ionospheric Maps
GIM,Global Ionospheric Maps
GIOVE,Galileo In-Orbit Validation Element
GIS,Geographic Information System
GIT,GNSS Implementation Team
GIVD,Grid Ionospheric Vertical Delay
GIVE,Grid Ionospheric Vertical Error
GIVEI,GIVE Indicators
GJU,Galileo Joint Undertaking
GLA,General Lighthouse Authorities
GLONASS,GLObal NAvigation Satellite System  
GLONASS,GLObal NAvigation Satellite System  
GLONASST,GLONASS Time  
GLONASST,GLONASS Time  
GMT,Greenwich Mean Time
GLP,Good Laboratory Practice
GLS,GNSS Landing System
GMDSS,Global Maritime Distress and Safety System
GMS,Ground Mission Segment
GMS,Ground Mission Segment
GMSK,Gaussian Minimum Shift Keying
GMST,Greenwich Mean Sidereal Time  
GMST,Greenwich Mean Sidereal Time  
G/NAV,Governmental Navigation Message
GMT,Greenwich Mean Time
GNS,Global Navigation System
GNSS,Global Navigation Satellite System  
GNSS,Global Navigation Satellite System  
GNSSP,GNSS Panel
GOC,Galileo Operating Company
GPRS,General Packet Radio Service
GPS,Global Positioning System
GPS,Global Positioning System
GPS/MET,Global Positioning System/Meteorology
GPSOC,GPS Operations Center
GPST,GPS Time  
GPST,GPS Time  
GPSW,GPS Wing
GRACE,Gravity Recovery And Climate Experiment
GRAPHIC,Group and Phase Ionospheric Calibration
GRAPHIC,Group and Phase Ionospheric Calibration
GRAS,Ground-based Regional Augmentation System
GRS,Geodetic Reference System
GRS,Geodetic Reference System
GRSP,Galileo Geodetic Reference Service Provider
GSA,European GNSS Agency
GSLV,Geosynchronous Satellite Launch Vehicle
GSM,Global System for Mobile communication
GSO,Geostationary Satellites Orbit
GSS,Galileo Sensor Stations
GSS,Galileo Sensor Stations
GST,Galileo System Time
GST,Galileo System Time
GTRF,Galileo Terrestrial Reference Frame  
GTRF,Galileo Terrestrial Reference Frame  
GUS,Ground Uplink Stations
HAL,Horizontal Alert Limit
HD,Hydrostatic Delay
HD,Hard Disk
HDOP,Horizontal Dilution Of Precision  
HDOP,Horizontal Dilution Of Precision  
HEO,Highly Elliptical Orbit
HF,High Frequency
HIS,High Integrity Service
HMI,Hazardous Misleading Information
HP,High Precision
HPA,High Power Amplifier
HPE,Horizontal Position Error
HPL,Horizontal Protection Level
HPPS,High Precision Positioning Service  
HPPS,High Precision Positioning Service  
HPS,High Precision Service
HTML,Hyper Text Markup Language  
HTML,Hyper Text Markup Language  
I/NAV,Integrity Navigation Message
IAEA,International Atomic Energy Agency
IAG,International Association of Geodesy
IAS,Institut Aero Spatial
IAU,International Astronomical Union
IAU,International Astronomical Union
IBPL,Isotropy Based Protection Level
IBS,Integrated Bridge Systems
IC,Integrated Chips
ICAO,International Civil Aviation Organization
ICC,Institut Cartografic de Catalunya
ICD,Interface Control Document
ICD,Interface Control Document
ICG,International Committee on Global Navigation Satellite Systems
ICR,Isotropic Confidence Ratio
ICRF,International Celestial Reference Frame  
ICRF,International Celestial Reference Frame  
ICRS,International Celestial Reference System  
ICRS,International Celestial Reference System  
ICS,Internal Communication Subsystem
IDF,Ionospheric Disturbance Flag
IDF,Ionospheric Disturbance Flag
IEP,Initial Experimental Phase
IERS,International Earth Rotation and Reference Systems Service
IERS,International Earth Rotation and Reference Systems Service
IF,Intermediate Frequencies
IGEX,International GLONASS EXperiment
IGEX,International GLONASS EXperiment
IGP,Ionospheric Grid Point
IGS,International GNSS Service
IGS,International GNSS Service
IGSO,Inclined Geosynchronous Satellite Orbit  
IGSO,Inclined Geo-Synchronous Orbit
I/NAV,Integrity Navigation Message
ILRS,IRNSS Laser Ranging Station
ILS,Instrument Landing Systems
IM,Inter Modulation
IMO,International Maritime Organization
IMU,Inertial Measurement Unit
INC,IRNSS Navigation Centre
INLUS,Indian Land Uplink Station
INMCC,Indian Master Control Center
INRES,Indian REference Stations
INS,Inertial Navigation System
IOC,Initial Operational Capability
IOD,Issues of Data
IODC,Issue of Data Clock
IODE,Issue Of Data Ephemeris
IODF,Issue Of Data Fast Corrections
IODI,Issue of Data IGP Mask
IODN,Issue of Data Navigation
IODP,Issue Of Data PRN mask
IODS,Issue of Data Service Message
ION,Institute Of Navigation
IONEX,IONosphere map EXchange format  
IONEX,IONosphere map EXchange format  
ION-NTM,ION National Technical Meeting
IOR-W,Indian Ocean Region West
IOT,In-Orbit Test
IOV,In-Orbit Validation  
IOV,In-Orbit Validation  
IP,Internet Protocol
IPF,Integrity Processing Facility
IPP,Ionospheric Pierce Point
IPP,Ionospheric Pierce Point
IRCDR,IRNSS CDMA Ranging Stations
IRDCN,IRNSS Data Communication Network
IRIMS,IRNSS Range and Integrity Monitoring Stations
IRN,Information Request Notice
IRNSS,Indian Regional Navigational Satellite System
IRNWT,IRNSS Timing Centre
IRTTC,IRNSS TTC and Uplinking Stations
ISI,Inter Symbol Interference
ISM,Integrity Support Message
ISRO,Indian Space Research Organization
ISS,International Space Station
ITR,International Terrestrial Reference
ITRF,International Terrestrial Reference Frame  
ITRF,International Terrestrial Reference Frame  
ITRS,International Terrestrial Reference System  
ITRS,International Terrestrial Reference System  
ITU,International Telecommunications Union
ITU,International Telecommunications Union
ITU-R,International Telecommunications Union Radiocommunication Sector
ITU-R,International Telecommunications Union Radiocommunication Sector
IWG,Interoperability Working Group
JAXA,Japan Aerospace Exploration Agency
JD,Julian Day  
JD,Julian Day  
JLOC,Jammer Location
JMA,Japan Meteorological Agency
JPL,Jet Propulsion Laboratory
JPL,Jet Propulsion Laboratory
KH,Kelvin-Helmholtz
KMF,Key Management Facility
L2CL,L2 Civil Long
L2CM,L2 Civil Moderate
LAAS,Local Area Augmentation System
LAST,Local Apparent Sidereal Time  
LAST,Local Apparent Sidereal Time  
LC,Carrier Phase ionosphere-free combination
LBS,Location Based Services
LEO,Low Earth Orbiter
LCA,Liability Critical Applications
LCD,Liquid Crystal Display
LEO,Low Earth Orbit
LEOP,Launch Early OPerations
LEX,Michibiki experimental signal
LFSR,Linear Feedback Shift Registers
LHCP,Left Hand Circular Polarization
LM,Local Mean
LMST,Local Mean Sidereal Time  
LMST,Local Mean Sidereal Time  
L2CL,L2 Civil Long
LNA,Low Noise Amplifier
L2CM,L2 Civil Moderate
LNAV,Lateral Navigation
MBOC,The Multiplexed Binary O_set Carrier
LO,Local Oscillator
MC,Satellite Mass Centre
LOC,Linear Offset Carrier
LOS,Line-Of-Sight
LP,Localizer Performance
LPV,Localizer Performance with Vertical guidance
LRIT,Long Range Identification and Tracking
LT,Long Term
LVP,Low Visibility Procedures
MASPS,Minimum Aviation System Performance Standards
MBOC,The Multiplexed Binary Offset Carrier
MCC,Mission Control Centers
MCS,Master Control Station
MCS,Master Control Station
MCS,Multilevel Coded Spreading Symbols
MEAG,Mission Evolution Advisory Group
MEDLL,Multipath Estimating Delay Lock Loop
MEH,Marine Electronic Highway
MEO,Medium Earth Orbit
MEO,Medium Earth Orbit
MJD,Modi_ed Julian Day
MEOSAR,Medium Earth Orbit Search And Rescue
METIS,Mediterranean Introduction of GNSS Services
MGF,Message Generation Facility
MHSS,Multiple Hypothesis Solution Separation
MI,Misleading Information
MJD,Modified Julian Day
MLS,Microwave Landing System
MLU,MRS Land User service
MM,Monument Marker  
MM,Monument Marker  
MODIP,MOdi_ed DIP latitude
MMI,Man Machine Interface
MMSSS,Multi-Mode Spread-Spectrum Sub-carrier Modulation
MNAV,Military NAVigation Message
MOB,Man Overboard
MODIP,MOdified DIP latitude
MOPS,Minimum Operational Performance Specification
MPR,MultiPath Ratio
MPSK,Multiple Phase Shift Keying
MRA,Measurement Rejection Approach
MRS,Multi-Constellation Regional System
MS,Monitor Stations  
MS,Monitor Stations  
MSAS,MTSAT Satellite Augmentation System
MSC,Mobile Satellite Communications
MSD,Minimum Set of Data
MSE,Mean-Square Error  
MSE,Mean-Square Error  
MW,Melbourne Wubbena
MSF,Mission Support Facility
MSI,Misleading Signal-in-Space Information
MSK,Minimum Shift Keying
MSTID,Medium Scale Traveling Ionospheric Disturbances
MT,Military Tracking
MT,Message Type
MT0,Message Type 0
MT1,Message Type 1
MT2,Message Type 2
MT3,Message Type 3
MT4,Message Type 4
MT5,Message Type 5
MTPF,Maintenance and Training Platform
MTSAT,Multifunctional Transport Satellite
MUCF,Mission Uplink Control Facility
NAD83,North American Datum of 1983
NANUs,Notice Advisory to Navstar Users
NAPEOS,Navigation Package for Earth Observation Satellites
NAS,National Airspace System
NASA,National Aeronautics and Space Administration
NASA,National Aeronautics and Space Administration
NAV,Navigation Message  
NAV,Navigation Message  
NAVCEN,NAVigation CENter
NCA,Non-Critical applications
NCO,Numerical Control Oscillators
NDB,Non-Directional Beacon
NDGPS,Nationwide Differential Global Positioning System
NELP,Non-coherent Early minus Late Power
NEU,North-East-Up
NEU,North-East-Up
NGA,National Geospatial-Intelligency Agency
NGA,National Geospatial-Intelligency Agency
NIST,National Institute of Standards and Technology  
NIST,National Institute of Standards and Technology  
NLES,Navigation Land Earth Stations
NLOS,Non Line Of Sight
NMCS,New Master Control Station
NMEA,National Marine Electronics Association
NOCC,National Operations Control Center
NOTAM,NOTice to AirMen
NPA,Non-Precision Approach
NPV,Non Precision Approach with vertical guidance
NRTK,Network RTK
NRZ,Non-Return to Zero
NSE,Navigation System Error
NSP,Navigation System Panel
NSU,Navigation Signal generator Unit
NSV,Near Space Vehicle
NTRIP,Networked Transport of RTCM via Internet Protocol
OA,Operational Advisories
OBD,On-Board diagnostics
OBU,On Board Unit
OCC,Operational Control Centers
OCS,Operational Control System
OCX,Operational Control Segment
OD&TS,Orbit Determination and Time Synchronisation
ODTS,Orbit Determination and Time Synchronisation
OEM,Original Equipment Manufacturer
OLAF,from French: Office de Lutte Anti-Fraude
ONCE,Spanish organisation for the blind
OPF,Operations Preparation Facility
OQPSK,Offset QPSK
ORMS,Orbiter and Radio Metric Systems
OS,Open Service
OS,Operative System  
OS,Operative System  
PC,Code ionosphere-free combination
OSD,Open Signal Data
OSP,Open Signal Pilot
OSPF,Orbit determination and Synchronization Processing Facility
OTF,On-The-Fly
PA,Precision Approach
PACF,Performance Assessment and Checkout Facility
PANS,Procedures for Air Navigation Services
PAYD,Pay-As-You-Drive
PBN,Performance-Based Navigation
PCV,Phase Centre Variations
PCV,Phase Centre Variations
PDOP,Precision Dilution Of Precision  
PDA,Personal Digital Assistant
PDF,Portable Document Format
PDM,Position Domain Monitoring
PDOP,Position Dilution Of Precision  
PE,Protection Error
PFD,Primary Flight Display
PL,Protection Level
PLANS,Position Location and Navigation Symposium
PLL,Phase Lock Loop
PM,Phase Modulation
PND,Portable Navigation Devices
PNG,Portable Network Graphics
PNT,Positioning
POD,Precise Orbit Determination
POI,Point Of Interest
PPP,Precise Point Positioning
PPP,Precise Point Positioning
PPS,Precise Point Service
PPS,Precise Point Service
PR,Pseudo Random
PRN,Pseudo-Random Noise  
PRN,Pseudo-Random Noise  
PRS,Public Regulated Service
PRS,Public Regulated Service
PRTODTS,Precise Real Time Orbit Determination and Time Synchronization
PS,Precision Service
PSD,Power Spectral Density
PSK,Phase-Shift Keying
PSTD,Pseudospectral Time-Domain
PTC,Positive Train Control
PTF,Precision Timing Facility
PTP,Point-To-Point
PVT,Position
PZ-90,Parametry Zemli 1990 (Parameters of the Earth 1990)  
PZ-90,Parametry Zemli 1990 (Parameters of the Earth 1990)  
QOS,Quality Of Service
QPSK,Quadrature Phase-Shift Keying
QPSM,Quadrature Product Sub-carrier Modulation
QZSS,Quasi-Zenith Satellite System
QZSS,Quasi-Zenith Satellite System
RAAN,Right Ascension of the Ascending Node
RAIM,Receiver Autonomous Integrity Monitoring
RC,Rased Cosine
RCF,Raised Cosine Filter
RDS,Radio Data System
RDSS,Radio Determination Satellite Service
RECs,Regional Economic Communities
RF,Radio Frequency
RFC,Radio Frequency Compatibility
RFI,Radio Frequency Interference
RFID,Radio-Frequency Identification
RHCP,Right Hand Circular Polarization
RICS,Royal Institution of Chartered Surveyors
RIMS,Ranging Integrity Monitoring Stations
RINEX,Receiver INdependent EXchange format  
RINEX,Receiver INdependent EXchange format  
RK4,4th order Runge-Kutta
RK4,4th order Runge-Kutta
RMS,Root Mean Square
RMS,Root Mean Square
RNAV,aRea NAVigation
RNP,Required Navigation Performance
RNSS,Radionavigation Satellite System
RNSS,Radionavigation Satellite System
RRAIM,Relative RAIM
RRC,Range Rate Corrections
RRC,Root Raised Cosine
RSA,Russian Space Agency
RSIM,Reference Stations and Integrity Monitors
RSN,Reference Stations Network
RTCM,Radio Technical Commission for Maritime Services
RTK,Real-Time Kinematics  
RTK,Real-Time Kinematics  
RUC,Road User Charging
RX,Receiver
S/A,Selective Availability  
S/A,Selective Availability  
SA,Select Availability
SACCSA,From Spanish: Soluci¢n de Aumentaci¢n para el Caribe
SAIF,Submeter-class Augmentation with Integrity Function
SAM,South America Region
SAR,Search and Rescue
SAR,Search and Rescue
SARPs,Standard and Recommended Practices
SBAS,Satellite-Based Augmentation System
SBAS,Satellite-Based Augmentation System
SBCS,Sinusoidal Binary Coded Symbols
SCA,Safety Critical Applications
SCC,System Control Centre
SCC,System Control Centre
SCC,Spacecraft Control Centre
SCCF,Spacecraft and Constellation Control Facility
SCPF,Spacecraft and Constellation Planning Facility
SDA,System Design Approval
SDCM,System of Differentional Correction and Monitoring
SDD,Service Definition Document
SDR,Software Defined Radio
SEP,Spherical Error Probable
SEP,Spherical Error Probable
SF,Single Frequency
SGLS,Space Ground Link Subsystem
SI,International System of Physical Units
SI,International System of Physical Units
SINEX,Solution (Software/technique) INdependent EXchange format
SINEX,Solution (Software/technique) INdependent EXchange format
SIS,Signal In Space
SIS,Signal In Space
SISA,Signal-in-Space Accuracy
SISE,SIS Error
SISMA,SIS Monitoring Accuracy
SLR,Satellite Laser Ranging Station
SMCS,Sinusoidal Multilevel Coded Symbol
SMS,Short Message Service
SNAS,Satellite Navigation Augmentation System
SNIR,Signal to Noise plus Interference Ratio
SNR,Signal to Noise Ratio
SNT,SBAS Network Time
SOC,Sinusoidal Binary Offset Carrier
SoL,Safety-of-Life
SoL,Safety-of-Life
SOLAS,Safety of Life at Sea
SOTDMA,Self-Organizing Time Division Multiple Access
SP,Service Provider
SP3,Standard Product #3
SP3,Standard Product #3
SPAC,Satellite Positioning Research and Application Center
SPD,Slant Path Delay
SPEED,Support Platform for EGNOS Evolutions and Demonstrations
SPF,Service Product Facility
SPP,Standard Point Positioning
SPP,Standard Point Positioning
SPS,Standard Positioning Service
SQM,Signal Quality Monitoring
SRD,System Requirement Document
SRIF,Square-Root Information Filtering
SRRC,Square-Root Raised Cosine
SS,Spread Spectrum
SSC,Spectral Separation Coefficient
SSEG,Space Segment
SSTL,Surrey Satellite Technology Ltd.  
SSTL,Surrey Satellite Technology Ltd.  
ST,Short Term
STC,aircraft Supplemental Type Certificates
STEC,Slant Total Electron Content  
STEC,Slant Total Electron Content  
STF,Signal Task Force
SU,Soviet Union  
SU,Soviet Union  
SUPPs,regional SUPplementary Procedures
SV,Space Vehicle
SVN,Space Vehicle Number
SVN,Space Vehicle Number
TAI,Temps Atomique International
SW,Synchronization Words
TCB,"Barycentric Coordinate ""Time"" from the French Temps Coordonn_e Barycentrique"
SW,Software
TCG,"Geocentric Coordinate ""Time"" from the French Temps Coordonn_e G_eocentrique"
TACAN,TACtical Air Navigation
TDB,"Barycentric Dynamical ""Time"" from the French Temps Dinamique Barycentrique"
TAI,From French: Temps Atomique International
TBD,see TCB
TCA,Terminal Control Area
TCAR,Three-Carrier Ambiguity Resolution
TCAS,Traffic Collision Avoidance System
TCB,from French: Temps Coordonnee Barycentrique
TCG,from French: Temps Coordonnee Geocentrique
TDARDS,Truth Data Acquisition
TDB,from French: Temps Dinamique Barycentrique
TDOP,Time Dilution Of Precision  
TDOP,Time Dilution Of Precision  
TDS,Technology Demonstration System
TDT,Terrestrial Dynamic Time
TDT,Terrestrial Dynamic Time
TEC,Total Electron Content
TEC,Total Electron Content
TECU,Total Electron Content Unit  
TECU,Total Electron Content Unit  
TGD,Total Group Delay
TLM,TeLeMetry
TLM,TeLeMetry
TGD,Total Group Delay
TLS,Target Level of Safety
TMBOC,Time-Multiplexed BOC
TMR,Triple Modular Redundancy
TOW,Time Of Week
TRF,Terrestrial Reference Frame
TRF,Terrestrial Reference Frame
TRS,Conventional Terrestrial Reference System  
TRS,Conventional Terrestrial Reference System  
TS,Time Synchronisation
TSO,Technical Standard Order
TT,Terrestrial Time  
TT,Terrestrial Time  
TT&C,Telemetry
TTA,Time-To-Alert
TTC,Telemetry
TTFF,Time To First Fix
TUS,Test User Segment
TV,Television
TX,Transmitter
U.S.,United States
UAV,Unmanned Aerial Vehicle
UCAR,University Corporation of Atmospheric Research
UDRE,User Differential Range Error
UDREI,UDRE Indicator
UEN,Up-East-North
UEN,Up-East-North
UERE,User Equivalent Range Error
UIRE,User Ionospheric Range Error
UK,United Kingdom
ULS,Mission Uplink Stations
ULS,Mission Uplink Stations
UMTS,Universal Mobile Telecommunications System
UNB,University of New Brunswick
UNE,Up North East
UNECA,United Nations Economic Commission for Africa
UNISPACE,United Nations Conference on the Exploration and Peaceful Uses of Outer Space
UPC,Technical University of Catalonia  
UPC,Technical University of Catalonia  
U.S.,United States
URA,User Range Accuracy
URE,User Range Error
US,United States
USA,United States of America
USB,Universal Serial Bus
USCG,U.S. Coast Guard
USNDS,US Nuclear Detonation (NuDet) Detection System
USNO,United States Naval Observatory  
USNO,United States Naval Observatory  
UT,Universal Time  
UT,Universal Time  
UTC,Universal Time Coordinated
UT0,Universal Time 0
UT0,Universal Time 0
UT1,Universal Time 1
UT1,Universal Time 1
UT2,Universal Time 2
UT2,Universal Time 2
UTC,Universal Time Coordinated
UV,Ultra Violet
VAL,Vertical Alert Limit
VDB,VHF Data Broadcast
VDLL,Vector DLL
VDOP,Vertical Dilution Of Precision  
VDOP,Vertical Dilution Of Precision  
VE,Very Early
VHF,Very High Frequency
VL,Very Late
VLBI,Very Long Baseline Interferometry  
VLBI,Very Long Baseline Interferometry  
VNAV,Vertical Navigation
VOR,VHF Omnidirectional Range
VPE,Vertical Position Error
VPL,Vertical Protection Level
VRS,Virtual Reference Station
VTS,Vessel Traffic Service
WAAS,Wide Area Augmentation System  
WAAS,Wide Area Augmentation System  
WAD,Wide Area Differential
WADGPS,Wide Area Differential GPS
WAGE,Wide Area GPS Enhancements
WAN,Wide Area Network
WAP,Wireless Application Protocol
WARTK,Wide Area Real-Time Kinematics  
WARTK,Wide Area Real-Time Kinematics  
WARTK-EGAL,Wide Area Real-Time Kinematics based on EGNOS and Galileo
WG,World Geodetic
WG,Working Group
WGS,World Geodetic System
WGS,World Geodetic System
WGS84,World Geodetic System 84  
WGS84,World Geodetic System 84  
WLS,Weighted Least Square
WLS,Weighted Least Square
WMS,WAAS Master Station
WRC,World Radio Conference
WRS,Wide-area Reference Stations
XPE,Vertical/ Horizontal Protection Error
XPL,Vertical/ Horizontal Protection Level
ZHD,Zenith Hydrostatic Delay
ZPD,Zenith Path Delay
ZTD,Zenith Tropospheric Delay
ZTD,Zenith Tropospheric Delay
ZWD,Zenith Wet Delay
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Latest revision as of 12:06, 13 March 2012

This page contains Acronyms and their meaning, meant to be used by the Special:GetData page. Click on 'edit' to see the data.


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