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| AOA | Airport Operators Association |
| AOA | Angle of Arrival (Funkortung) |
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| AOD | Age of Data |
| AOD | Angle of Departure (Funkortung) |
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| AP | Access Point |
| AP | Application Protocol |
| AP | Aufnahmepunkt |
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| AR | Augmented Reality |
| AR | Axial Ratio |
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| ATM | Air Traffic Management |
| ATM | Automated Teller Machine |
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| CEP | Celestial Ephemeris Pole (today's name: CIP) |
| CEP | Circle of Equal Probability |
| CEP | Circular Error Probability |
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| CIO | Celestial Intermediate Origin |
| CIO | Conventional International Origin |
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| CSA | Canadian Space Agency |
| CSA | Channel of Standard Accuracy |
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| CTS | Conventional Terrestrial System |
| CTS | Coordinated Terrestrial System |
| CTS | Course to Steer (Navigation) |
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| DGK | Ausschuss Geodäsie der Bayerischen Akademie der Wissenschaften (früher: Deutsche Geodätische Kommission) dgk.badw.de |
| DGK | Deutsche Grundkarte |
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| DMS | Degrees Minutes Seconds (Winkelmaßeinheit) |
| DMS | Dehnungsmessstreifen |
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| DOT | Department Of Transportation (USA) |
| DOT | Dynamische Ozean-Topographie |
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| EET | ERS Envisat Tandem |
| EET | Eastern European Time |
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| ENC | Electronic Navigation Chart |
| ENC | European Navigation Conference |
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| FIR | Finite Impulse Response |
| FIR | Flight Information Region |
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| GCC | Galileo Control Centre |
| GCC | Ground Control Centres |
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| GCRF | Gaia Celestial Reference Frame |
| GCRF | Geocentric Celestial Reference Frame |
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| GCS | Ground Control Segment |
| GCS | Ground Control System (Galileo) |
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| GEO | Geostationärer Erdorbit |
| GEO | Group on Earth Observations www.earthobservations.org |
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| GK | Gauß-Krüger (Koordinatensystem) |
| GK | Großkreis (Navigation) |
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| GLS | GBAS Landesystem (Navigation) |
| GLS | GNSS Landesystem (Navigation) |
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| GMT | Generic Mapping Tool |
| GMT | Greenwich Mean Time |
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| GPPS | Geodätischer Postprocessing Positionierungsservice (SAPOS) www.sapos.de |
| GPPS | Geodätischer präziser Positionierungsservice (Bezeichnung veraltet) |
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| GRAPHIC | Group and Phase Ionospheric Calibration |
| GRAPHIC | Group and Phase Ionospheric Correction |
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| GSO | Geostationärer Satelliten-Orbit |
| GSO | Geosynchroner Orbit |
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| GST | Galileo System Time |
| GST | Greenwich Sidereal Time |
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| HEO | High Earth Orbit |
| HEO | Highly Elliptical Orbit |
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| HEOS | High Earth Orbit Satellite |
| HEOS | Highly Elliptical Orbit Satellite |
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| IAS | Institut Aero Spatial |
| IAS | International Altimetry Service www.iag-aig.org |
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| IBS | IAG Bibliographic Service |
| IBS | Integrated Bridge Systems |
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| IGRF | International Gravity Reference Frame |
| IGRF | Internationales Geomagnetisches Referenzfeld |
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| IGSO | Inclined Geosynchronous Orbit |
| IGSO | International Geodetic Students Organisation www.igso.info |
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| ILS | Instrumentenlandesystem (Navigation) |
| ILS | International Latitude Service (1962 umbenannt in IPMS) |
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| IRP | IERS Referenzpol (ehemals Internationaler Referenzpol) |
| IRP | Instantaner Rotationspol |
| IRP | Invariant Reference Point |
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| ISA | Inertial Sensor Assembly (INS) |
| ISA | Internationale Standardatmosphäre |
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| ISM | Integrity Support Message |
| ISM | International Society for Mine Surveying www.ism-minesurveying.org |
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| LEOP | Launch Early Operations |
| LEOP | Launch and Early Orbit Phase (Galileo) |
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| LNAV | Lateral Navigation |
| LNAV | Legacy Navigation Message (GPS) |
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| LoD | Length of Day |
| LoD | Level of Detail |
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| MCS | Master Control Station (GPS) |
| MCS | Multilevel Coded Spreading Symbols |
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| MLS | Mikrowellenlandesystem (Navigation) |
| MLS | Mobiles Laserscanning |
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| MT | Message Type |
| MT | Military Tracking |
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| MW | Melbourne-Wübbena (GNSS-Linearkombination) |
| MW | mittlerer Wasserstand |
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| NAS | National Airspace System |
| NAS | Normbasierte Austauschschnittstelle (ALKIS) |
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| NHP | Nivellementshauptpunkt |
| NHP | Normalhöhenpunkt |
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| OK | Objektartenkatalog |
| OK | Ordinary Kriging |
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| OS | Open Service (EGNOS) |
| OS | Open Service (Galileo) |
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| PCC | Permanent Committee on Cadastre in the European Union www.eurocadastre.org |
| PCC | Phase Center Correction (GNSS) |
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| PM | Phase Modulation |
| PM | Polar Motion |
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| PPS | Precise Positioning Service (GPS) |
| PPS | Puls pro Sekunde |
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| PR | Pseudo Random |
| PR | Pseudo Range |
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| PRN | Pseudo Random Noise |
| PRN | Pseudo Random Number |
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| PRS | Pseudoreferenzstation |
| PRS | Public Regulated Service (Galileo) |
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| PSD | Position Sensitive Device |
| PSD | Power Spectral Density |
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| PTP | Point-To-Point |
| PTP | Precision Time Protocol |
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| RB | Raumbezug |
| RB | Relative Bearing (Navigation) |
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| RRC | Range Rate Correction (GNSS) |
| RRC | Root Raised Cosine |
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| RSS | Received Signal Strength |
| RSS | Root of Summed Squares |
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| RTS | Real Time Service (IGS) |
| RTS | Robotic Total Station |
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| SAR | Search and Rescue (Galileo) |
| SAR | Synthetic Aperture Radar |
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| SCC | Spacecraft Control Centre |
| SCC | System Control Centre (Galileo) |
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| SINEX | Software Independent Exchange Format |
| SINEX | Solution Independent Exchange Format |
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| SNAS | Satellite Navigation Augmentation System |
| SNAS | Sino Navigation Augmentation System (regionale GNSS-Erweiterung China) |
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| SoL | Safety of Life (EGNOS) |
| SoL | Safety of Life (Galileo) |
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| SPP | Single Point Positioning |
| SPP | Standard Point Positioning |
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| SST | Satellite to Satellite Tracking |
| SST | Sea Surface Topography |
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| SW | Synchronization Word |
| SW | Südwest |
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| TGD | Time Group Delay (GNSS) |
| TGD | Total Group Delay |
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| TLS | Target Level of Safety |
| TLS | Terrestrischer Laserscanner |
| TLS | Total Least Squares |
| TLS | Transponderlandesystem (Navigation) |
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| TRS | Terrestrial Reference System |
| TRS | Terrestrischer Radarscanner |
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| TTC | Telemetry, Tracking, and Commanding (Galileo) |
| TTC | Trimble Total Control (Trimble Navigation Limited) |
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| WMS | WAAS Master Station |
| WMS | Web Map Service |
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| ZTD | Zenith Total Delay (GNSS) |
| ZTD | Zenith Tropospheric Delay (GNSS) |
