Glossary
- ABS:Anti Blocking System
- AC:Address Circular
- AD:Applicable Document
- ACI:Action Item Clarification
- AD/R:Architectural Design Review
- ADD:Architectural Design Document
- ADP:Acceptance Data Package
- AES:Analysis & Evaluation Segment
- AFCL:Air Force Cambridge Research Laboratories
- AHRS:Altitude Heading Reference System
- AIR:Inspection Aircraft & Independent Positioning
- AIV:Assembly, Integration and Verification
- AIVP:Assembly, Integration and Verification Plan
- ANSP:Air Navigation Service Provider
- AOC:Advance Operational Capability
- AOR:Atlantic Ocean Region
- AOR-E:AOR East
- AOR-W:Atlantic Ocean Region-West (INMARSAT III satellite)
- AP:Auto Pilot
- APV:Approach with Vertical Guidance
- ARINC:Aeronautical Radio, INC
- ARTEMIS:Advanced Relay and Technology Mission Satellite
- ARTES:Advanced Research in TElecommunication Systems
- ASE:Agence Spatiale Européenne or European Space Agency (ESA)
- ASQF:Application Specific Qualification Facility
- ASQFRD:ASQF Requirements Document
- ATC:Air Traffic Control
- ATM:Air Traffic Management or Asynchronous Transfer Mode
- ATS:Air Traffic Services
- ATSP:ATS Providers
- AWOP:All Weather Operations Panel
- Baro:Barometric altitude
- BER:Bit Error Rate
- BIH:Bureau International de l’Heure
- BIPM:Bureau International des Poids et Mesures
- BITE:Built In Test Equipment
- BPF:Band Pass Filter
- Bps:Bit per second
- BPSK:Bipolar Phase Shift Key
- BSDR:Baseline System Design Review
- BSDR-C:Consolidated BSDR
- BSSC:Board for Software Standardization & Control
- BW:Band Width
- C&M:Control & Monitoring
- C/A:Coarse Acquisition
- C1:C-band uplink frequency (C1 = 6.4 GHz)
- C2:C-band downlink frequency (C2 = 3.6 GHz)
- CAA:Civil Aviation Authority
- CAASD:Centre for Advanced Aviation System Development
- CADM:Configuration And Data Management
- CAT-1:Category 1 Precision Approach Phase of Flight
- CAT-2:Category 2 Precision Approach Phase of Flight
- CC:Configuration Control or Core Computer
- CCB:Change Configuration Board or Configuration Control Board
- CCF:Central Control Facility
- CCI:Communications Control Interface
- CCITT:Comite Consultatif International Telegraphique et Telephonique or International Telephone and Telegraph Consultative Committee
- CCN:Contract Change Notice
- CDI:Course Deviation Indicator
- CDMA:Code Division Multiple Access
- CDR:Critical Design Review
- CE:Communication Equipment
- CEU:Commission of the European Union
- CFI:Customer Furnished Item
- CHA:Channel of High Accuracy
- CI:Configuration Item
- CIDL:Configuration Items Data List
- CIO:Conventional International Origin
- CL:Client representative
- CM:Compliant Multiple or Configuration Manager or Configuration Management
- CMO:Configuration Management Office
- CMP:Configuration Management Plan
- CMT:Centre de Mission et Traitement (Euridis) or Commissioning and Maintenance Terminal
- CN:Change Notice
- CNES:Centre National d’Etudes Spatiales
- CNMS:Communication Network Management System
- CNS:Communications Navigation & Surveillance
- CO:Change Order
- COC:Certification Of Conformance
- COQ:Certification of Qualification
- COS:Continuity Of Service
- COTS:Commercial Off The Shelf
- CPF:Central Processing Facility
- CPU:Central Processing Unit
- CR:Change Request
- CRB:Change Review Board
- CRC:Cyclic Redundancy Check
- CRD:Comment Response Documents (at EASA)
- CSA:Channel of Standard Accuracy
- CSAR:Configuration Status Accounting Report
- CSI:Containment Surface Incident
- CSU:Channel Service Unit
- CW:Continuous Wave
- DAL:Development Assurance level
- DAT:Digital Audio Tape
- DB:Data Base
- DCN:Document Change Notice
- DCU:Display & Control Unit
- DD:Detailed Design
- DD/R:DD Review
- DDD:DD Document
- DDKP:DD Key Point
- DFS:Deutsche Flugsicherung GmbH (D)
- DGAC:Direction Generale Aviation Civile (F)
- DGPS:Differential GPS
- DH:Decision Height
- DIL:Deliverable Items List
- DJF:Design Justification File
- DLL:Delay Lock Loop
- DLR:Deutsche forschungsanstalt fur Luft – und Raumfahrt e.v.
- DMA:Direct Memory Access
- DME:Distance Measuring Equipment
- DoC:Depth of Coverage
- DOD:Department Of Defence (US)
- DOP:Dilution Of Precision
- DOT:Department Of Transport
- DPU:Data Processing Unit
- DR:Design Review
- DRACAS:Data Recording Analysis and Corrective Action System
- DRAIM:Differential RAIM
- DRD:Document Requirements Description
- DRL:Documentation Requirements List
- DRMS:Distance Root Mean Square
- DRU:Data Replaceable Unit
- DSPU:Digital Signal Processing Unit
- DSS:Design Simulation Segment
- DSU:Data Service Unit
- DVP:Development Verification Platform
- DVPRD:DVP Requirements Document
- EASA:European Aviation Safety Agency
- ECAC:European Civil Aviation Conference
- ECDIS:Electronic Chart Display and Information System
- ECEF:Earth Centred Earth Fixed
- ECO:Engineering Change Order
- ECP:Engineering Change Proposal
- ECR:Engineering Change Request
- ECRB:External Change Review Board
- ECS:Electronic Chart System
- ECSS:European Co-operation for Space Standardisation
- EDAS:
EGNOS Data Access Service
- EDP:EGNOS ILD Documentation Plan
- EEE:Electrical Electronic Electromechanical
- EETES:EGNOS End To End Simulation
- EGN:EGNOS
- EGNOS:European Geostationary Navigation Overlay Service
- EIDP:End Item Data Package
- EIRP:Equivalent Isotropic Radiated Power
- EMC:Electromagnetic Compatibility
- EMP:EGNOS Maintenance Plan
- ENAV:Ente Nationale di Assistenze al Volo (Italy)
- ENMA:EGNOS Network Management Application
- ENMC:EGNOS Network Monitoring & Control
- ENT:EGNOS Network Time
- EOIG:EGNOS Operators and Infrastructure Group
- EPO:EGNOS Project Office
- EPROM:Erasable and Programmable Read Memory Only
- EPUE:EGNOS Prototype User Equipment
- EPUERD:EPUE Requirements Document
- ERAM:EGNOS Requirements Allocation Matrix
- ERNP:European RadioNavigation Plan
- ESA:European Space Agency
- ESA-CST:ESA Centre Spatial de Toulouse or ESA Toulouse Space Centre
- ESA HQ:ESA Headquarters Paris
- ESDV:Early System Demonstration & Verification (activities)
- ESM:Electronics Support Measures
- ESNP:European Satellite Navigation Programme
- ESRRD:EGNOS Standard Receiver Document
- ESSF:EGNOS System Simulation Facility
- ESSP:European Satellite Services Provider
- ESTB:EGNOS System Test Bed
- ESTEC:European Space Research and Technology Centre (Noordwijk)
- ESVS:EGNOS Service Volume Simulator
- ETFM:Early Trials Final Meeting
- ETG:European Tripartite Group
- ETMS:EGNOS Transport Management System
- ETS:Early Test System
- ETSO:European Technical Standard Order
- EVP:EGNOS Verification Plan
- EUROCAE:European Organisation for Civil Aviation Equipment
- EWAN:EGNOS Wide Area Network
- FAA:Federal Aviation Administration
- FAF:Final Approach Fix
- FANS:Future Air Navigation Systems
- FDDI:Fibber Distributed Data Interface
- FDE:Failure Detection and Exclusion
- FDI:Failure Detection and Isolation
- FDIR:Failure Detection , Isolation and Recovery
- FDMA:Frequency Division Multiple Access
- FDS:Flight Director System
- FEC:Forward Error Correction
- FECP:Front End Communication Processor
- FEE:(EWAN) Front End Equipment
- FFT:Fast Fourier Transform
- FIR:Flight Information Region
- FIVP:Factory Integration Validation Plan
- FL:Flight Level
- FMAP:Failure during Miss Approach Procedure
- FMECA:Failure Mode Effects & Criticality Analysis
- FMS:Flight Management System
- FOC:Full Operational Capability
- FOCTF:FOC Transition File
- FQP:Factory Qualification Plan
- FQR:Factory Qualification Review
- FRe:
Frame Relay
- FTA:Fault Tree Analysis
- FTE:Flight Technical Error
- FTRR:Factory Test Readiness Review
- G/S:Ground Segment
- GBA:Geostationary Broadcast Area
- GBAS:Ground Based Augmentation System
- GEO:
Geostationary Earth Orbit
- GIC:Ground Integrity Channel
- GIVD:Grid Ionospheric Vertical Delay
- GIVE:Grid Ionospheric Vertical Error
- GLONASS:Global'naya Navigatsionnaya Sputnikovaya Sistema or Global Navigation Satellite System
- GMDSS:Global Maritime Distress and Safety System
- GNOS:Geostationary Navigation Overlay Service
- GNSS:Global Navigation Satellite System
- GNSS-1:GNSS First Generation
- GNSS-P:GNNS Panel
- GPRS:General Packet Radio Services
- GPS:Global Positioning System
- GRAIM:Ground RAIM
- GRS:Geostationary Ranging Stations or Geostationary Ranging System
- GRS-H:GRS – Hartebeeshoek, South Africa
- GRS-K:GRS – Kourou, Guyana
- GRS-S:GRS – Singapore
- GRS-T:GRS – Toulouse, France
- GS:Ground Speed or Ground Segment
- GSA:European GNSS Agency
- GSBAS:Geostationary Satellite Based Augmentation System
- G-SBAS:Geostationary-Satellite Based Augmentation Systems
- GSCN:Ground Segment Communication Network
- GSM:Global System for Mobile communications
- GSRD:Ground Segment Requirements Document
- GSVP:Ground Segment Verification Plan
- GUI:Graphical User Interface
- GW:GateWay
- Gyro:Gyroscope
- H/W:Hardware
- HAL:Horizontal Alarm Limit
- HDI:HeaDIng
- HDLC:High Level Data Link Control
- HDOP:Horizontal Dilution Of Precision
- HDU:Hard Disk Unit
- HE:Hosting Entity
- HID:Hazardous Invalid Data
- HMI:Hazardous Misleading Information
- HOW:Hand Over Word
- HPA:High Power Amplifier
- HPL:High Precision Landing or Horizontal Protection Level
- HUNE:Horizontal User Navigation Error
- HW:HardWare
- HWE:Hardware Engineer
- I/F:InterFace
- I/S:Interference / Signal
- IALA:International Association of Lighthouse Authorities
- IAP:Interoperability Action Plan
- IATA:International Air Transport Association
- ICAO:International Civil Aviation Organisation
- ICB:Interface Control Board
- ICD:Interface Control Document
- ICO:Intermediate Circular Orbit
- ICRB:Interna Change Review Board
- IDEF0:Integrated Design Functional model
- IERS:International Earth Rotation Service
- IF:Intermediate Frequency
- IFF:Identifier Friend (or Foe)
- IGP:Ionospheric Grid Points
- IGS:International GPS Service for Geodynalics
- IKD:In Kind Delivery
- ILS:Instrument Landing System or Integrated Logistics Support
- IMO:International Maritime Organisation
- INC:Inmarsat Navigation Center
- INMARSAT:International MARitime SATellite
- INS:Inertial Navigation System
- IOC:Initial Operational Capability
- IOD:Issue Of Data or Issuance Of Data
- IODC:Issuance Of Data Clock
- IODE:Issuance Of Data Ephemeris
- IODI:Issuance Of Data Ionosphere
- IODP:Issuance Of Data PRN
- IOP:Initial Operations Phase
- IOR:INMARSAT III – Indian Ocean Region
- IP:Internet Protocol
- IPP:Ionospheric Pierce Point
- IRD:Interface Requirements Document
- IRS:Inertial Reference System
- ISDN:Integrated Services Digital Network
- ISNS:International Satellite Navigation System
- ISO:
International Organization for Standardization
- ISOP:In Service Operations Phase
- ISVV:Independent Software Verification and Validation
- ITRF:International Terrestrial Reference Frame
- ITT:Invitation To Tender
- ITU:International Time Unit
- JAA:Joint Aviation Authorities
- JAR:Joint Airworthiness Requirement
- JCB:Joint Communications Board (ESA)
- JTC:Joint Tripartite Committee
- JTSO:Joint Technical Standing Orders
- Kbps:Kilobits per second
- KO:Kick-Off
- KOM:KO Meeting
- L1:L1-GPS frequency (L1 = 1575,42 MHz)
- L2:L2-GPS frequency (L1 = 1227,2 MHz)
- LAAS:Local Area Augmentation System
- LAD:Local Area Differential
- LADGPS:Local Area Differential GPS
- LAN:Local Area Network
- LAPB:Link Access Procedure for Balanced circuits
- LHC:Left Hand Circular
- LHCP:Left Hand Circular Position
- LMP:Logistic Management Plan
- LNA:Low Noise Amplifier
- LO:Local Oscillator
- LOC:Line Of Code
- LPV:Localiser Performance with Vertical Guidance
- LRU:Line Replaceable Unit
- LSA:Logistic Support Analysis
- LSB:Least Significant Bit
- M&C:Monitoring and Control
- MASPS:Minimum Aviation System Performance Standard
- MCC:
Mission Control Centre
- M-CCB:Mission Configuration Control Board
- MCC1:Principal Master Control Centre
- MCC2:Backup Master Control Centre
- MCC-P:Master Control Centre (Primary)
- MCCRD:MCC Requirements Document
- MCC-S:Master Control Centre (Secondary)
- MCU:Management & Control Unit
- MD:Miss Detection
- ME:Multipath Error
- MEDLL:Multipath Estimating Delay Lock Loop
- MEL:Minimum Equipment List
- MLS:Microwave Landing System
- MMEL:Master MEL
- MMI:Man Machine Interface
- MOPS:Minimum Operational Performance Standard
- MPR:Mission Performance Requirements
- MRB:Material Review Board
- MRD:Mission Requirements Document
- MRR:Mission Requirements Review
- MSAS:Multi-transport Satellite-based Augmentation System
- MSB:Most Significant Bit
- MSER:Manager for in-SERvice phase
- MSG3:Maintenance Steering Group 3
- MTB:Mediterranean Test Bed
- MTBF:Mean Time Between Failures
- MTBO:Mean Time Between Outages
- MTSAT:Multi Transport SATellite
- MTTR:Mean Time To Restore an outage
- NA or N/A:Note Applicable
- NAS:National Airspace System or National Air Space
- NATS:National Air Traffic Services (UK)
- NAV:NAVigation sub-system
- NC:Non Compliant
- NCC:Network Control Centre
- NCM:Network Control Management
- NCR:Non-Conformance Report
- NCRB:Non-conformance Review Board
- NI:Non Integrity
- NIHID:Non-Integrity Hazardous Invalid Data
- NLES:Navigation Land Earth Station
- NLES-1B:Backup to NLES-R
- NLES-2B:Backup to NLES-A
- NLES-A:NLES – Aussagel France
- NLES-R:NLES – Riesting Germany
- NLESRD:NLES Requirements Document
- NM:Nautical Mile
- NMC:Network Management Center
- NMF:Network Management Facility
- NOC:Network Operations Centre
- NOCC:Network Operation Control Centre
- NOTAM:Notice To Airmen
- NPA:Non Precision Approach
- NPL:National Physical Laboratory
- NSA:Navigation Service Availability
- NSE:Navigation System Error
- NTW:Network
- NTWRD:Network Requirements Document
- O&M:Operation & Maintenance
- OCR:Operational & Certification Requirement
- OD:Orbit Designation
- OHA:Operating Hazard Analysis
- ORD:Operations Requirements Document
- ORR:Operational Readiness Review
- O/S:Operating System
- OSI:Open Systems Interconnection
- P&C:Processing and Control
- PA:Product Assurance
- PACF:Performance Assessment and Check-out Platform
- PACFRD:PACF Requirements Document
- PAD:Packet Assembler-Disassembler
- PAE:PA Engineer
- PAM:PA Manager
- PAP:Product Assurance Plan
- PB-NAV:Programme Board-Navigation (ESA)
- PBMF:Performance Budget Management File
- PBN:Performance Based Navigation
- PC:Personal Computer
- P-CCB:Programme Configuration Control Board
- PDOP:Position Dilution Of Precision
- PDP:Project Development Plan
- PDR:Preliminary Design Review
- PFA:Probability of False Alarm
- PFD:Power Flux Density
- PHD:Project History Document
- PHST:Packing, Handling, Storage & Transport Plan
- PIDS:Prime Item Development Specification
- PM:Progress Meeting or Preventive Maintenance or Project Management
- PMD:Probability of Missed Detection
- PMP:Project Management Plan
- PN:Pseudo Noise
- POR:Pacific Ocean Region
- PP:Present Position
- PPS:Precise Positioning Service or Pulse Per Second
- PRE:Pseudo-Range Error
- PRN:Pseudo Random Noise
- PS:Power Supply
- PS-CCB:Project/System Configuration Control Board
- PSC:Project Safety Concern
- PSPDN:Packet-Switched Public Data Network
- PSS:Procedures, Standards and Specifications
- PSTN:Public Switched Telephone Network
- PT:Product Tree
- PTT:Project Tracking Team
- PU:Portable Unit
- PVC:Permanent Virtual Circuit
- PVM:Procedure Verification Matrix
- PVT:Position, Velocity, Time
- QA:Quality Assurance
- QFE:Barometric pressure at runway threshold
- QMS:Quality Management System
- QoS:Quality of Service
- QR:Qualification Review
- RAAS:Regional Area Augmentation System
- RAIM:Receiver Autonomous Integrity Monitoring
- RAM:Reliability Availability and Maintainability or Random Access Memory
- RAMS:Reliability Availability, Maintainability and Safety
- RB:Review Board
- RCF:Ranging Control Facility
- RCS:Revision Control System
- RCVR:Receiver
- RD:Requirements Document or Reference Document
- REC:Range Error Correction
- RF:Radio Frequency
- RFC:RF Conversion or Request For Change
- RFD:Request For Deviation
- RFDC:RF Down Converter
- RFE:RF front End
- RFI:Radio Frequency Interference
- RFLAB:RF measurement LABoratory
- RFQ:Request For Quotation
- RFW:Request For Waiver
- R-GEO:Ranging via GEO satellites
- RGIC:Ranging and Ground Integrity Channel
- RGS:Ranging Ground Segment
- RHC:Right Hand Circularly polarised
- RHCP:Right Hand Circular Polarisation
- RID:Review Item Discrepancy
- RIMSRD:RIMS Requirements Document
- RMS:Root Mean Square
- RNAV:Radio NAVigation
- RNP:Required Navigation Performance or Required Navigation Parameters
- ROD:Review Of Design
- ROR:Range Only Radar
- RPU:Receiver Processing Unit
- RRC:Range-Rate Corrections
- RS:Remote Station or Reference Station
- RST:Reference System Time
- RTCA:Radio Technical Commission for Aeronautics or Radio Technical Committee of America
- RTK:Real Time Kinematics
- RTOS:Real Time Operating System
- RTSS:Real-Time Simulation Segment
- RX:Receiver
- S/C:SpaceCraft
- S/W:SoftWare
- SA:Selective Availability
- SADT:Structure Analysis and Design Technical
- SAN:Satellite Access Node
- SARP(s):Standards And Recommended Practices
- SAW:Surface Acoustic Wave
- SBAS:Satellite Based Augmentation System
- SC:Software Component
- SCAR:Software Component Acceptance Review
- SCAT-I:Special CATegory I
- SCC:Satellite Control Centre
- SCL:Station de Connexion et Localisation
- SCM:Software Configuration Management
- SCMP:Software Configuration Management Plan
- SCO:Software Change Order
- SCQR/R:Software Component Qualification Readiness Review
- SCR:Software Change Request
- SCSI:Small Computer System Interface
- SDM:System Definition Manual
- EGNOS SE:
EGNOS Subsystem Element
- SECT:System Engineering Core Team
- SeKO:Set Kick Off
- SEP:Support Equipment Plan
- SESAR:Single European Sky ATM Research
- SFVP:Support Facility Verification Plan
- SGS:Soviet Geocentric System
- SGS-90:Soviet Geodetic System
- SIS:Signal In Space
- SIVP:Site Integration Validation Plan
- SL:Service Level or Station de Localisation
- SLA:Service Level Agreement (with network service provider)
- SLRD:System Level Requirements Document or SL Requirements Document
- SMR:Software Modification Report
- SNA:Satellite Navigation Application
- SNAPAS:Satellite Navigation Performance Analysis Software
- SNMP:Simple Network Management Protocol
- SNR:Signal to Noise Ratio
- SNT:Satellite Navigation Transponder
- SOC:Spacecraft Operation Centre
- SOLAS:Safety of Life At Sea
- SOP:System Operation Plan
- SOW:Statement Of Work
- SPACS:Simplified Position Accuracy Calculation Software
- SPM:System Project Management
- SPMP:System Project Management Plan or Software Project Management Plan
- SPR:Software Problem Report
- SPS:Standard Positioning Service
- SQAP:Software Quality Assurance Plan
- SQL:Software Query Language
- SQP:System Qualification Plan
- SQR:System Qualification Review
- SR:Standard Receiver or Software Requirements
- SR/R:Software Requirements Review
- SRAM:Static Random Access Memory
- SRB:Software Review Board
- SRD:System Requirements Document or Software Requirement Document
- SRN:Software Release Note
- SSAR:Sub System Acceptance Review
- SSATR:Sub System Acceptance Test Review
- SSCDR:Sub System CDR
- SSDD:System Segment Design Document
- SSFQR:Sub System Factory Qualification Review
- SSKO:Sub System Kick Off
- SSN:Sun Spot Number
- SSPA:Solid State Power Amplifier
- SSPDR:Sub System PDR
- SSR:Site Selection Review
- SSRD:Sub-System Requirements Document
- SSTRR:Sub System Test Readiness Review
- ST:System Testing
- STD:Software Transfer Document
- STEP1:R-GEO augmentation
- STEP2:GIC augmentation
- STEP3:WAD augmentation
- STNA:Service Technique Navigation Aerienne (F)
- STR:System Test Readiness
- STRR:System Test Readiness Review
- SU:SUpplier
- SUM:Software User Manual
- SV:Space Vehicle
- SVC:Switch Virtual Circuit
- SVP:System Verification Plan or Software Verification Plan or Subsystem Verification Plan
- SVVP:Software Verification and Validation Plan
- SW:SoftWare
- SWPM:SoftWare Project Manager
- SWRU:Software Replaceable Units
- T:Test or Time
- T4S:Thomson-CSF / Services et Systemes Sol Spatiaux
- TA:Terminal Adapter (ISDN modem)
- TAS:True Air Speed
- TBC:To Be Clarified or To Be Confirmed
- TBD:To Be Defined or To Be Determined
- TBO:Time Between Outages
- TBS:To Be Studied or To Be Specified by the contractor
- TCP:Transmission Control Protocol
- TCP/IP:Transmission Control Protocol/Internet Protocol
- TE:Test Engineer
- TEB:Tender Evaluation Board
- TEC:Total Electron Content
- TF:Task Force
- TGNSS:NLES reference Time
- TH:True Heading
- TL:Team Leader
- TLM:TeLeMetry
- TLS:Target Level of Safety
- TM:TeleMetry
- TMA:Technique Management Area
- TN-033:Technical Note on EGNOS overlay services
- TN-069:Operation Concept Document
- TOW:Time Of Week
- TPG:Time of Propagation
- TRAC:Traceability Report
- TRB:Test Review Board
- TRO:Time to Restore an Outage
- TRR:Test Readiness Review
- TRSF:Transfer
- TS:Training Segment
- TSE:Total System Error = ( NSE2 + FTE2)1/2
- TSF:Test and Simulation Facilities
- TSO:Technical Standard Order
- TTC:Telemetry, Tracking and Command
- TUE:Test User Equipment
- TWAN:Transport Wide Area Network
- Tx:Transmitter
- UDP:User Datagram Protocol
- UDRE:User Differential Range Error
- UEE:User Equipment Error
- UERE:User Equivalent Range Error
- UHF:Ultra High Frequency
- UIVD:User Ionospheric Vertical Delay
- UIVE:User Ionospheric Vertical Error
- UNE:User Navigation Error
- UPS:Uninterruptible Power Supply
- UR:User Requirements
- UR/R:User Requirements Review
- URA:User Range Accuracy
- URD:User Requirements Document
- URE:User Range Error
- US:
United States
- USAT:Ultra-Small Aperture Terminal (satellites terminal)
- USRD:User Segment Requirements Document
- UTC:Coordinated Universal Time
- VAL:Vertical Alarm Limit
- VCB:Verification Control Board
- VDOP:Vertical Dilution Of Precision
- VHF:Very High Frequency
- VNSE:Vertical Navigation System Error
- VOR:VHF Omnidirectional Ranging
- VPL:Vertical Protection Level
- VRD:Verification Requirements Document
- VSAT:Very Small Aperture Terminal
- VTE:Vertical Tropospheric compensation Error
- VTS:Vessel Traffic Surveillance
- VUNE:Vertical User Navigation Error
- WAAS:Wide Area Augmentation System
- WAC:Wide Area Correction
- WAD:Wide Area Differential
- WADC:Wide Area Differential Correction
- WADGPS:Wide Area Differential GPS
- WBS:Work Breakdown Structure
- WD:Wind Direction
- WGS:World Geodesic System
- WGS-84:World Geodetic System
- WIMP:Windows Icons Mouse Pointer
- WN:Week Number
- WP:WorkPackage
- WPD:WorkPackage Description
- WS:Wind Speed
- LBS:
Location-based services
- TTFF:
Time to first fix
- SDCM:
System for Differential Corrections and Monitoring
- MEOSAR:
Medium Earth Orbit Search and Rescue system
- RIMS:
Ranging and Integrity Monitoring Station
- MCC:
Mission Control Centres
- EWAN:
EGNOS Wide Area Network
- NSV:
Number of Satellite Vehicles
- VPE:
Vertical Position Error
- BRNA:
Berlin RIMS
- ASN.1:
Abstract Syntax Notation One
- RTCM:
Radio Technical Commission for Maritime Services
- SVs:
Space Vehicles
- SL0:
Service Level 0
- SL1:
Service Level 1
- VRT:
Variable Rate Technologies
- VMS:
Vessel Monitoring System
- PPP:
Precise Point Positioning
- IoT:
Internet of Things
- Geo-IoT:
Geolocation - Internet of Things
- LPWAN:
Low-Power Wide-Area Network
- UWB:
Ultra-wideband
- UAV:
Unmanned Aerial Vehicle
- VFR:
Visual Flight Rules
- UAVs:
Unmanned Aerial Vehicles
- VFRs:
Visual Flight Rules
- SDD:Service Definition Document
- SoL:Safety of Life
- OS:Open Service
- SDD:
Service Definition Document
- OS:
Open Service
- SoL:
Safety of Life
- SIS:
Signal-in-Space
- EUSPA:
European Union Agency for the Space Programme
- GOVSATCOM:Governmental Satellite Communications
- OS-NMA:Open Service Navigation Message Authentication service
- PA:
Product Assurance
- GSMC:
Galileo Security Monitoring Centre
- DG DEFIS:
Directorate-General for Defence Industry and Space
- DG AGRI:
Directorate-General for Agriculture and Rural Development
- SSA:
Space Situational Awareness
- SST:
Space Surveillance and Tracking
- CFSP:
Common Foreign and Security Policy
- PRS:
Public Regulated Service
- EuroQCI:
Euro Quantum Communication Infrastructure
- VHTS:
Very High Throughput Satellite
- EUMETSAT:
European Organisation for the Exploitation of Meteorological Satellites
- EARSC:
European Association of Remote Sensing Companies
- CARG:
Compound Annual Rate of Growth
- rail
- SUE:
SECRET UE/EU SECRET: the unauthorised disclosure of this information could seriously harm the essential interests of the EU or one or more of the Member States.
- RUE:
RESTREINT UE/EU RESTRICTED: the unauthorised disclosure of this information could be disadvantageous to the interests of the EU or one or more of the Member States.
- IDD:
Internet Data Distribution
- IRIS²:
Infrastructure for Resilience, Interconnectivity and Security by Satellite