Glossary of abbreviations and acronyms
This index was compiled to the best of our knowledge, but it cannot guarantee completeness and correctness. Any liability is excluded in the case of incorrect data. Numerous abbreviations/acronyms may have multiple meanings, which are indicated wherever possible. Indicated organisations do not necessarily still exist: they may have disassembled or been renamed. Slightly different terms having the same meaning are marked by “/”. If you find mistakes or incomplete information, please inform us at <post(at)dgk.badw.de>. We thank you for your cooperation.
Links to further glossaries:
Geoinformatik-Service (Institut für Geodäsie und Geoinformatik (GG) AUF Universität Rostock)
- International Organisation for Standardization (ISO)
www.iso.org
- Abréviations en informatique et télécommunications (R. Goedertier)
http://users.skynet.be/agpym/abreviations2.html
| 2MASS | Two Micron All Sky Survey |
| 2MASS | Two Micron All Sky Survey |
| AAC | Associated Analysis Centre |
| AAM | Atmospheric Angular Momentum |
| ABLOS | Advisory Board on the Law of the Sea |
| AC | Analysis Coordinator |
| AC | Analysis Centre (Center) |
| ACES | Atomic Clock Ensemble in Space |
| ADCP | acoustic doppler current profiler |
| ADDNEQ | add normal equation files |
| AdV | Arbeitsgemeinschaft der Vermessungsverwaltungen der Länder der Bundesrepublik Deutschland |
| AER | Atmospheric and Environmental Research Inc. |
| AFISO | Anatolian Fault Integrated Seismogenic Observatory |
| AGIV | Agency of Geographic Information Vlaanderen (Agency for Geographical. Information Flanders) |
| AGK2 | Zweiter Katalog der Astronomischen Gesellschaft (Second Catalogue of the Astronomical Society) |
| AGN | Active Galactic Nuclei |
| AGNES | Automatisches GPS Netz Schweiz (Automated GPS Network of Switzerland ) |
| AGRS | Active GPS Reference System |
| AGU | American Geophysical Union |
| AICAS | Astronomical Institute, Academy of Sciences of the Czech Republic |
| AIUB | Astronomical Institute, University of Bern |
| AKDA | Alaska Deformation Array |
| ALKIS | Amtliches Liegenschaftskataster-Informationssystem |
| AMON | Austrian Monitoring Network |
| ANTEX | Antenna Exchange Format |
| APC | Antenna Phase Centre |
| APCV | Antenna Phase Centre Variation |
| APKIM | Actual Plate Kinematic Model and Crustal Deformation Model |
| APOS | Austrian Positioning System |
| APRGP | Asia Pacific Regional Geodetic Project |
| APSG | Asia-Pacific Space Geodynamics |
| APT | Asia Pacific Telescope |
| ARPA | automatic radar plotting aid |
| as | arc seconds |
| asap | as soon as possible |
| ASCOS | Satellitenreferenzdienst der EON Ruhrgas AG |
| ASI | Agenzia Spaziale Italiana / Telespazio S.p.A., Space Geodesy Center, Italy |
| ATKIS | Amtliches Topographisch-Kartographische Informationssystem (Authoritative Topographic Cartographic Information System) |
| ATNF | Australia Telescope National Facility |
| AUSLIG | Australian Surveying and Land Information Group |
| AVISO | Archiving, Validation and Interpretation of Satellites Oceanographic data |
| AVN | Allgemeine Vermessungsnachrichten |
| AWG | Analysis Working Group |
| AWI | Alfred-Wegener-Institut für Polar- und Meeresforschung |
| AWS | Alfred-Wegener-Stiftung |
| AWS | Automatic Weather Station |
| BALTPOS | Baltic Positioning System |
| BARD | Bay Area Regional Deformation |
| BARGEN | Basin And Range Geodetic Network |
| BCRS | Baryzentrisches Zälestisches Bezugssystem (Barycentric Celestial Reference System) |
| BEK | Bayerische Kommission für die Internationale Erdmessung (Bavarian Commission for Global Geodesy), München |
| BEV | (Österreichisches) Bundesamt für Eich- und Vermessungswesen / (Austrian) Federal Office for Metrology and Surveying |
| BfG | Bundesanstalt für Gewässerkunde |
| BGG | Bulletin of Geodesy and Geomatics Information |
| BGI | Bureau Gravimetrique International / International Gravimetric Bureau |
| BGR | Bundesanstalt für Geowissenschaften und Rohstoffe |
| BIH | Bureau International de l'Heure |
| BIPM | Bureau International des Poids et Mesures |
| BKG | Bundesamt für Kartographie und Geodäsie (German Federal Agency of Cartography and Geodesy) |
| BLR | Broad Line Region |
| BLR | Baltic Levelling Ring |
| BM | bench mark |
| BMBF | Bundesministerium für Bildung und Forschung |
| BNC | BKG Ntrip client |
| BNs | BKG Ntrip service |
| BStMWFK | Bayerisches Staatsministerium für Wissenschaft, Forschung und Kunst |
| BSW | Bernese Software |
| BTS | BIH Terrestrial System |
| BUGF | Britiash Isles GPS archive Facility |
| BULREF | Bulgarian Reference Network |
| c | century |
| CASA | Central And South America Geodynamics GPS Project |
| CATREF | Combination and Analysis of Terrestrial Reference Frames |
| CB | Central Bureau |
| CC | Combination Centre |
| CCD | Charge-Coupled Device |
| CCIR | International Radio Consultative Committee |
| CCM | Consultative Committee for Mass and Related Quantities |
| CCP | Communication Control Program |
| CCP | Calibrator Characteristic Parameters |
| CCTF | Comité Consultatif des Temps et Fréquences |
| CDDIS | NASA Crustal Dynamics Data Information System |
| CDP | NASA Crustal Dynamics Project |
| CEDR | Center for Earth Dynamics Research |
| CEGRN | Central European GPS Geodynamic Reference Network |
| CEI | Central European Initiative |
| CEO | Celestial Ephemeris Origin |
| CEOS | Committee on Earth Observersion Satellites |
| CEP | Celestial Ephemeris Pole |
| CERCO | Comité Européean des Responsables de la Cartographic Officielle |
| CERCO | Comité Européean des Responsables de la Cartographic Officielle |
| CERGA | Centre d'Etudes et de Recherches Géodynamiques et Astronomiques |
| CERGOP | Central Europe Regional Geodynamics Project |
| CfA | Harvard-Smithsonian Center for Astrophysics |
| cfp | call for participation |
| CGPS | Continuous Global Positioning System |
| CGS | Centre di Geodesia Spatiale, ASI |
| CH-CGN | Swiss Combined Geodetic Network |
| CHAMP | Challenging Mini-Satellite Payload for Geo-scientific Research and Applications Program |
| CHCGN | Swiss Combined Geodetic Network |
| CIGNET | Cooperative International GPS Net |
| CIO | Conventional International Origin |
| CIP | Celestial Intermediate Pole |
| CLG | Central Laboratory for Geodesy |
| CLS | Collecte Localisation Satellites (Toulouse) |
| CMB | core-mantle boundary |
| CMG | Committee on Mathematical Geophysics |
| CMT | (Harvard) Centroid Moment Tensor |
| CNES | Centre National d'Etudes spatiales |
| CNRS | Centre National de la Recherche Scientifique |
| COB | Communication and Outreach Branch |
| COD | Centre for Orbit Determination |
| CODE | Centre for Orbit Determination in Europe |
| COE | European solution created at CODE (Center for Orbit Determination in Europe) |
| COF | center of figure |
| COGI | Commission interservice group on Geographic Information (coordinating committee for GI (Geo-Information) |
| CoM | centre-of-mass |
| COPUOS | Committee on the Peaceful Uses of Outer Space |
| CORE | [NASA] Continuous Observations of the Rotation of the Earth |
| CORS | Continuously Operating Reference Stations |
| COST | European Cooperation in the Field of Scientific and Technical Research |
| COSTOP | Costal Geosurface Topography |
| CPP | Combination Pilot Project |
| CPU | central processing unit |
| CRC | Combination Research Centers |
| CRF | Celestial Reference Frame |
| CRL | Communications Research Laboratory |
| CROPOS | Croatian Positioning System |
| CRS | Celestial Reference System |
| CRS | Coordinate Reference System |
| Cryosat | Cryosphere [observation] Satellite |
| CSR | Center for Space Research |
| CSTG | Commission on International Coordination of Space Techniques for Geodesy and Geodynamics |
| CTBT | Comprehensive Nuclear Test Ban Treaty |
| CTD | conductivity, temperature and depth sensor |
| CTIO | Cerro Tololo Inter-American Observatory |
| CTRF | Conventional Terrestrial Reference Frame |
| CTRS | Conventional Terrestrial Reference System |
| CW | Chandler Wobble |
| CZEPOS | Czech Positioning System |
| DAAD | Deutscher Akademischer Austauschdienst |
| DAB | Digital Audio Broadcasting |
| DANOF | Département d'Astronomie Fondamentale |
| DAO | GSFC Data Assimilation Office |
| DB | Directing Board |
| DC | Data Centre |
| dd | double differences |
| dec | declination |
| DEO (SDEOS) | Delft Institute for Earth-Orientated Space Research, Delft University of Technology, Netherlands |
| DEVF | Dense European Velocity Field |
| DFD | Deutsches Fernerkundungsdatenzentrum |
| DFG | Deutsche Forschungsgemeinschaft |
| DFHRS | Digital FEM Height Reference Surface |
| DGFI | Deutsches Geodätisches Forschungsinstitut (German Geodetic Research Institute), München |
| DGfK | Deutsche Gesellschaft für Kartographie (German Society for Cartography) |
| DGK | Deutsche Geodätische Kommission (German Geodetic Commission) |
| DGM | Digitales Geländemodell |
| DGM50 | Digitales Geländemodell 1 : 50.000 |
| DGNSS | Differential GNSS |
| DGON | Deutsche Gesellschaft für Ortung und Navigation |
| DGPF | Deutsche Gesellschaft für Photogrammetrie und Fernerkundung (German Society for Photogrametry and Remote Sensing) |
| DGPS | Differential GPS (Differential Global Positioning System) |
| DHHN | Deutsches Haupthöhennetz |
| DIODE | Détermination Immédiate d'Orbite par Doris Embarqué |
| dIR | draft implementation rules |
| DLM | Dgitales Landschaftsmodell |
| DLR | Deutsche Forschungsanstalt für Luft- und Raumfahrt eV / Deutsche Agentur für Luft- und Raumfahrt |
| DMA | Defense Mapping Agency |
| DOGS | DGFI Orbit & Geodetic Parameter Estimation Software |
| DOI | Digital Object Identifier |
| DOMES | Directory Of MERIT Sites (originally; now of more general use) |
| DOP | Dilution of Precision |
| DORIS | Doppler Orbit determination and Radiopositioning Integrated on Satellite |
| DOSE | NASA Dynamics of Solid Earth |
| doy | day of year |
| DPMS | Dahlgren Polar Monitoring Service |
| DPS | digital photogrammetric station |
| DREF | Deutsches Referenznetz |
| DSN | JPL Deep Space Network |
| DT | Data Specification |
| DTK | Deutsche Topographische Karte |
| DTK50 | Deutsche Topographische Karte 1 : 50.000 |
| DTM | Military Topography Directorate, Romania |
| DUT | Delft University of Technology |
| DUT1 | = UT1-UTC |
| DVW | Deutscher Verein für Vermessungswesen |
| DWD | Deutscher Wetterdienst (German Weather Service) |
| EADS | European Aeronautic Defence and Space Company |
| EAL | Échelle atomique libre |
| EBRY | Eastern Basin and Range/Yellowstone |
| ECCO | Estimating the Circulation and Climate of the Ocean |
| ECGN | European Combined Geodetic Network |
| ECMWF | European Center for Medium Range Weather Forecasts (Forecasting) |
| ECS | electronic chart system |
| EDC | EUROLAS Data Center |
| EE | Equation of the Equinoxes |
| EG | EuroGeographics |
| EGG | European Gravimetric (Quasi-)Geoid |
| EGG97 | European Gravimetric (Quasi)Geoid 1997 |
| EGGP | European Gravity and Geoid Project |
| EGII | European Geographic Information Infrastructure |
| EGM | European Global Map |
| EGM | Earth Gravitational Model |
| EGM96 | Earth Gravity Model 1996 |
| EGN | European Geographical Names / EuroGeoNames |
| EGNOS | European Geostationary Navigation Overlay Service |
| EGS | European Geophysical Society |
| EGVAP | EUMETNET GPS water vapour programme |
| eGY | Electronic Geophysical Year |
| EM | Earth Modell |
| EMR | Energy, Mines and Resources Canada (replaced by NRCan) |
| ENSG | Ecole Nationale de Sciences Geographiques |
| ENVISAT | Environment [observation] Satellite |
| EOC | Earth Orientation Centre |
| eof | end of file |
| eof | empirical orthogonal function |
| EOP | Earth Orientation Parameters |
| EOPGS | Ecole et Observatoire de Physique du Globe de Strasbourg |
| EOSS | European Sea Level Observing System |
| EPCM | Engineering Procurement Construction Management / Enhanced Planning Control Message |
| EPFL | Ecole Polytechnique Fédérale de Lausanne |
| EPIGGOS | European (Project) IGGOS |
| EPN | European Permanent GPS Network |
| EPN CB | EUREF Permanent GPS Network Central Bureau |
| EQG97 | European Gravimetric Quasigeoid 1997 |
| ERA | Earth Rotation Angle |
| ERAF | European Remote Sensing Aircraft Facility |
| ERIS | Earth Resources Inventory System |
| ERIS | Earth Rotation Information System |
| ERM | European Regional Map |
| ERP | Earth Rotation Parameter(s) |
| ERS | Earth Resources Satellite |
| ERS | European Remote Sensing Satellite |
| ESA | European Space Agency |
| ESDI | European Spatial Data Infrastructure |
| ESEAS | European Sea Level Service |
| ESF | European Science Foundation |
| ESI | Essential Science Indicators |
| ESOC | European Space Agency Operational Center |
| ESTEC | European Space Technology Center |
| ETALON | Russian Passive Satellite Series for Geodetic Measurements |
| ETeMII | European Territorial Management Information Infrastructure |
| ETHZ | Eidgenössische Technische Hochschule Zürich (Federal Technical University Zurich) |
| EU | European Union |
| EUCOS | Eumetnet Composite Observing System |
| EULIS | European Land Information Service |
| EUMETNET | European Meteorological Services Network |
| EUPOS | European Position Determination System |
| EUREF | IAG Reference Frame Sub-commission for Europe / EuropeanReference Frame / IAG Subcommission European Reference Frame |
| EUREF-IP | EUREF Internet Protocoll |
| Euro SDR | European Spatial Data Research |
| EuroDEM | Europäisches DGM |
| EuroGeoName | European Geographical Names |
| EUROLAS | European Consortium of Laser Ranging Stations |
| EuroRoadS | pan-European Road Solution |
| EuroSDI | European Spatial Data Infrastructure (formerly OEEPE) |
| EuroSDR | European spatial data research |
| EuroSpec | European Specifications for Reference Data |
| EUVN | European Vertical Network |
| EVF | European Velocity Field |
| EVN | European VLBI Network |
| ExG-G | EuroGeographics Expert Group for Geodesy |
| FAGS | Federation of Astronomical and Geophysical Data Analysis Services |
| FAME | Full-sky Astrometric Mapping Explorer |
| FBM | fundamental benchmark network |
| FCN | Free Core Nutation |
| FDSN | Federation of Digital Seismographic Networks |
| FEM | Finite Element Model |
| FEOM | finite-element ocean model |
| FES | Global Tide Finite Element Solution Assimilating Tide Gauge and Altimetric Information |
| FESG | Forschungseinrichtung Satellitengeodäsie der TU München |
| FFI | Forsvarets forskningsinstitutt |
| FGI | Finnish Geodetic Institute |
| FGS | Forschungsgruppe Satellitengeodäsie |
| FICN | Free Inner Core Nutation |
| FIG | International Federation of Surveyors / Fédération Internationale des Géomètres / Internationale Vereinigung der Vermessungsingenieure |
| FK5 | Fifth Fundamental Catalogue |
| FKP | Flächenkorrekturparamer |
| FLEPOS | Flemish Positioning Service |
| FOP | Final Operational Phase |
| FP | Framework Programme |
| FReDNet | Friuli Regional Deformation Network |
| FTBG | Fakultätentag für Bauingenieurwesen und Geodäsie |
| FTP | File Tranfer Protocoll |
| FY | Fiscal Year |
| GAGAN | GPS and GEO Augmented Navigation system |
| GAGOS | geodetic and geohazard observation system |
| GAIA | Global space astrometry mission der ESA |
| GALILEA | Galileo local elements augmentation |
| GALILEO | European Satellite Navigation System |
| GaMa | Geodesy Mapping |
| GAOUA | Main Astronomical Observatory of the Ukrainian Academy of Sciences |
| GAUS | Geoscience Australia |
| GBAS | Ground Based Augmentation Systems |
| Gbps | Gigabit per second |
| GBSS | Geodetic Base Station Software |
| GCM | General Command of Mapping Turkey |
| GCRS | Geozentrisches Zälestisches Bezugssystem (Geocentric Celestial Reference System) |
| GCS | Galileo Core System |
| GCS | Geodetic Consulting Services |
| GCS | Geographic Coordinate System |
| GDI-DE | Geodateninfrastruktur Deutschland |
| GEM | Goddard Earth Model |
| GEO | Group of Earth Observtions |
| GEODAC | Geodynamic Data and Analysis Center |
| GEOMAR | Marine Geo-Science-Center |
| GEONAS | GEOdynamic Network of the Academy of Sciences of the Czech Republic |
| GEOSAT | Geodetic Satellite (US Navy) |
| GEOSS | Global Earth Observation System of Systems |
| GESS | Galileo Experimental Sensor Station |
| GESS | Global Earthquake Satellite System |
| GFO | GEOSAT Follow-On Mission |
| GFZ | GeoForschungsZentrum Potsdam |
| GGFC | Global Geophysical Fluids Centre |
| GGM | Gravity Geologic Method |
| GGOS | Global Geodetic Observing System (cf. IGGOS) |
| ggp | global geodynamics project |
| GGSP | Geodetic Galileo Service Provider / Galileo Geodesy Service Provider |
| GI | Geo-Information |
| GIA | glacial isostatic adjustment |
| GIM | Global Ionospheric Maps |
| GiMoDig | Geospatial info-mobility service by real-time data-integration and generalisation |
| GIOVE | Galileo In-Orbit Validation Element |
| GIPSY | GPS-Inferred Positioning System |
| GIS | GEO-Informationssysteme |
| GISS | Goddard Institute for Space Studies |
| GIUB | Geodetic Institute of the University of Bonn |
| GLOBAL | Globales VLBI Experiment |
| GLOCHANT | Group of Specialists on Global Change and the Antarctic |
| GLONASS | Global Orbiting Navigation Satellite System |
| GLOSS | Global Sea Level Observing System |
| GLOUP | GLObal Undersea Pressure |
| GMES | Global Monitoring for Environment and Security |
| GMS | Ground Mission Segment |
| GMST | Greenwich Mean Sidereal Time |
| GNSS | Global Navigation Satellite System |
| GO | Geodetic Observatory |
| GOCE | Gravity Field and Steady-State Ocean Circulation Explorer (ESA) |
| GOP | Geodetic Observatory Pecny, Czech Republic |
| GPL | General Public License |
| GPPS | Geodetic Post-processing Positioning Service |
| GPRS | General Packet Radio Service |
| GPS | (NAVSTAR) Global Positioning System |
| GPT | Global Pressure and Temperature |
| GRACE | Gravity Recovery and Climate Experiment (Mission USA/Germany) |
| GRB | Gamma Ray Bursts / Gamma Ray Burster |
| GREF | (Integrated) German Reference Network |
| GRGS | Groupe de Recherches de Géodésie Spatiale |
| GRS | Geodetic Reference System |
| GRSP | Geodetic Reference Service Provider |
| GSDI | Global Spatial Data Infrastructure |
| GSF | (NASA) Goddard Space Flight Center, (Greenbelt, USA) |
| GSFC | Goddard Space Flight Center (NASA) |
| GSI | Geographical Survey Institute |
| GSM | Global System of Mobile Communication |
| GSS | Galileo sensor station |
| GST | Greenwich Sidereal Time |
| GTRF | Galileo Terrestrial Reference Frame |
| GTS | Great Trigonometrical Survey |
| GTS | Global Telecommunication System |
| GTSP | Galileo Time Service Provider |
| GTZ | Deutsche Gesellschaft für Technische Zusammenarbeit |
| GVaP | Global Water Vapour Project |
| GVRS | global vertical reference system |
| GZ | GEOZUP Company |
| HDAPS | hydrographic data acquisition and processing system |
| HRS | Height Reference System |
| I&F | Instrumentation and Facilities |
| IAA | Institute of Applied Astronomy, St. Petersburg |
| IACS | International Association of Cryospheric Sciences |
| IAG | International Association of Geodesy |
| IAGA | International Association of Geomagnetism and Aeronomy |
| IAHS | International Association of Hydrological Sciences |
| IAIN | International Association of Institutes of Navigation |
| IAMAS | International Association of Meteorology and Atmospheric Sciences |
| IAPG | Institut für Astronomische und Physikalische Geodäsie |
| IAPSO | International Association for the Physical Sciences of the Oceans |
| IARAS | Institute of Astronomy, Russian Academy of Sciences (formerly: LPAC; see also INASAN) |
| IAS | International Altimeter Service |
| IASPEI | International Association of Seismology and Physics of the Earth's Interior |
| IASPO | International Association for the Physical Sciences of the Ocean |
| IAU | International Astronomical Union |
| IAVCEI | International Association of Volcanology and Chemistry of the Earth's Interior |
| IBS | IAG Bibliographic Service |
| ICA | International Cartographic Association |
| ICC | Inter-Commission Committees |
| ICCGS | Inter-Commission Committee on Geodetic Standards |
| ICCPG | Inter-Commission Committee on Planetary Geodesy |
| ICCT | Inter-Commission Committee for Theory |
| ICESat | Ice, Cloud,and Land Elevation Satellite |
| ICET | International Centre for Earth Tides |
| ICG | International Committee on Global Navigation Satellite Systems |
| ICGEM | International Center for Global Earth Models |
| ICGFC | Institute for Cadastre, Geodesy, Photogrammetry and Cartography, Romania |
| ICGRS | Internet-enabled Geodetic Reference System |
| ICRF | International Celestial Reference Frame |
| ICRS | International Celestial Reference System |
| ICSU | International Council for Science |
| IDS | International DORIS Service |
| IERS | International Earth Rotation Service / International Earth Rotation and Reference Frame Service |
| IESG | Internet Engineering Steering Group |
| IESSG | Institute of Engineering Surveying and Space Geodesy, University of Nottingham |
| IEWP | International Early Warning Programme |
| IfAG | Instititut für Angewandte Geodäsie (jetzt “ Bundesamt für Kartographie und Geodäsie - BKG)” |
| IfE Hannover | Institut für Erdmessung, Universität Hannover (Institute for Global Geodesy University Hannover) |
| IFEOM | inverse finite-element ocean circulation model |
| IGDG | Internet-based Global Differential GPS |
| IGE | Instituto Geografico Nacional - Spain |
| IGeS | International Geoid Service |
| IGEX | International GLONASS Experiment |
| IGFS | International Gravity Field Service |
| IGGC | International Gravity and Geoid Commission |
| IGGOS | Integrated Global Geodetic Observing System (cf. GGOS) |
| IGMI | Istituto Geografico Militare Italiano (Italian Military Geographic Institute) |
| IGN | Institut Géographique National, France |
| IGOS | Integrated Global Observation Strategy |
| igos-p | igos Partnership |
| IGOS-P | Integrated Global Observation Strategy Partnership |
| IGR | IGS rapid (orbit) |
| IGRT | IGS rapid time (products) |
| IGS | International GPS Service (for Geodynamics) |
| IGSN | International Geodetic Space Network |
| IGST | IGS time scale |
| IGU | IGS 'ultra-rapid' satellite orbits |
| IHO | International Hydrographic Organization |
| IHP | International Hydrological Programme |
| ILP | International Lithosphere Project |
| ILRS | International Laser Ranging Service |
| ILS | International Latitude Service |
| IMAGI | Interministerieller Ausschuss für Geoinformationswesen |
| IMS | Interoperable Map Software |
| IMTA | International Map Trade Organization |
| INASAN | INstitut AStronomii Rossijskoj Akademii Nauk (Institute of Astronomy of the Russian Academy of Sciences) |
| INDIGO | Inter-service Data Integration for Geodetic Operations |
| INS | inertial navigation system |
| InSAR | Interferometric Synthetic Aperture Radar |
| INSPIRE | Infrastructure for Spatial Information in Europe |
| INSU | Institut des Sciences de l'Univers |
| INTERREG | EU Interregional Co-operation Programme |
| IOC | Initial Operational Capability |
| ION | Institute of Navigation |
| IOV | In-Orbit-Validation |
| IP | Internet Protocoll |
| ipcc | intergovernmental Commission on Limate Change |
| IPCC | intergovernmental Commission on Limate Change |
| IPGP | Institut de Physique du Globe de Paris |
| IPGP | Institut de Physique du Globe de Paris |
| IPMS | International Polar Motion Service |
| IPWV | integrated precipitable water vapour |
| IR | implementing rules |
| IRD | Institut de Recherche pour le Développement |
| IRI | International Reference Ionosphere |
| IRIS | International Radio-Interferometric Surveying |
| IRIS | Incorporated Research Institutions for Seismology |
| IRM | IERS Reference Meridian |
| IRNSS | Indian Regional Navigation Satellite System |
| IRP | IERS Reference Pole |
| IRSM | Institute of Rock Structure and Mechanics, Academy of Sciences of the Czech. Republic |
| isc | international service centre |
| ISDC | Information System and Data Center |
| ISES | Integrated Solid Earth Science |
| ISG | Integrated Survey Grid |
| ISG | Indian Society of Geomatics |
| ISGN | International Space Geodetic and Gravimetric Network |
| ISMASS | Antarctic Ice Sheet Mass Balance and Sea Level |
| ISO | International Organization for Standardization |
| ISPRS | International Society for Photogrammetry and Remote Sensing |
| ISRO | Indian Space Research Organization |
| ISSI | International Space Science Institute |
| IT | Informationstechnologie |
| ITC | International Institute for Aerospace Survey and Earth Sciences |
| ITRF | International Terrestrial Reference Frame |
| ITRS | International Terrestrial Reference System |
| ITU | International Telecommunication Union |
| ITU-R | International Telecommunication Union, Radiocommunication Sector |
| IUGG | International Union of Geodesy and Geophysics |
| IVRS | International Vertical Reference System |
| IVS | International VLBI Service for Geodesy and Astrometry |
| IWV | integrated water vapour |
| JADE | Japanese Dynamic Earth observation by VLBI |
| JASON | Joint Altimetry Satellite Oceanography Network (Extended ocean surface topography mission (NASA / CNES)) |
| JB-GIS | Joint Board of the Geospatial Information Societies |
| JCET | Joint Center for Earth System Technology, GSFC |
| JHD | Japan Hydrographic Department |
| JIVE | Joint Institute for VLBI in Europe |
| JMA | Japan Meteorological Agency |
| jog | Journal of Geodesy |
| JoG | Journal of Geodesy |
| JPL | Jet Propulsion Laboratory, Pasadena, USA |
| JRC | Joint Research Centre |
| JRC | Joint Research Centre |
| KEOF | Kalman Earth Orientation Filter |
| KMS | Kort & Matrikelstyrelsen (Denmark) |
| LAC | Local Analysis Center |
| LAGEOS | Laser Geodynamics Satellite (NASA) |
| LAN | Local Area Network |
| LAREG | Laboratoire de Recherche en Geodesie |
| LATPOS | Latvian Positioning System |
| LEA | Laboratory of Ephemeris Astronomy, IAA |
| LEGOS | Laboratoire d'Etudes en Géophysique et Océanographie Spatiales |
| LEO | Low Earth Orbiting Satellite |
| LGIT | Laboratoire de Géophysique Interne et Tectonophysique |
| LGN | Landesvermessung + Geobasisinformation Niedersachsen |
| LGN | Local Geodynamic Network |
| LIDAR | light detection and ranging |
| LLR | Lunar Laser Ranging |
| LMO | Legally Mandated Organisation(s) |
| LNA | Laboratório Nacional de Astrofísica |
| LOD | Length of Day |
| LORAN | LOng RAnge Navigation |
| LOS | loss of signal |
| LOS | line of sight |
| LPCE | Laboratoire de Physique et Chimie de l'Environnement |
| LPT | Bundesamt fuer Landestopographie (L+T), Switzerland; jetzt: SWISSTOPO |
| LS | least squares (adjustment) |
| LSG | Large-Scale Graphics |
| LSGER | Laboratory of Space Geodesy and Earth Rotation, IAA |
| LSI | Large-Scale Integration |
| LSM | land surface model |
| LSQ | least squares collocation |
| LTS | Long-Term Solution |
| MAGINOT | Mediterranean Alpine Geophysical INsitu ObservaTories |
| mas | milliarcsecond(s) |
| mc | minimum constraint |
| MCC | Russian Mission Control Centre |
| MCEP | mean Celestial Ephemeris Pole |
| MEGRIN | Multipurpose European Ground Related Information Network |
| MERIT | Monitoring Earth Rotation and Intercomparison of Techniques |
| MIT | Massachusetts Institute of Technology |
| MJD | Modified Julian Day |
| MLE | maximum likelihood estimator |
| MLRS | McDonald Observatory Laser Ranging Station |
| MOCNESS | multiple opening and closing net and environmental sensory system |
| MOLDPOS | Moldavian Positioning System |
| MoU | Memorandum of Unterstanding |
| MPIfR | Max-Plank-Institut für Radioastronomie |
| MRDB | Multi Resolution Data Base |
| MSL | Mean Sea Level |
| MSSH | mean sea surface height |
| MST/IS | Mesosphere-Stratosphere-Troposphere / Incoherent Scatter |
| MTLRS | Modulares Transportables Laserentfernungsmesssystem |
| NACLR | National Agency for Cadastre and Land Registration, Romania |
| NAL | National Aerospace Laboratory |
| NAO | National Astronomical Observatory |
| NAOMZ | National Astronomical Observatory, Mizusawa branch |
| NAP | Normaal Amsterdams Peil (Normal Amsterdam Level) |
| NASA | [U.S.] National Aeronautics and Space Administration |
| NAVEX | NAVNET Experiment |
| NAVNET | (U.S.) Navy VLBI Network |
| NCAR | (U.S.) National Center for Atmospheric Research |
| NCEP | (U.S.) National Center for Environmental Prediction |
| NCL | University of Newcastle upon Tyne |
| NEOS | (U.S.) National Earth Orientation Service |
| NEQ | normal equation (files) |
| NERC | Natural Environment Research Council |
| NETPOS | Netherlands Positioning System |
| NEU | North, East, Up components |
| NGDB | Nationale Geodatenbasis |
| NGDB | Nationale Geodatenbasis |
| NGN | National Gravimetric Network |
| NGN | National Geodetic Network |
| NGOS | Nordic Geodetic Observing System |
| NGOS | Nordic Geodetic Observing System |
| NGS | (U.S.) National Geodetic Survey |
| NIMA | (U.S.) National Imagery and Mapping Agency |
| NIPR | National Institute for Polar Research |
| NKG | Nordic Geodetic Commission (Nordiska Kommisjonen for Geodesi) |
| NKGG | (Deutsches) Nationalkomitee für Geodäsie und Geophysik |
| NLN | National Levelling Network |
| NLS | National Land Survey |
| NMA | National Mapping Agency |
| NMC | National Meteorological Center (replaced by NCEP) |
| NMCA | National Mapping and Cadastre Agencies |
| NMF | Neill Mapping Function |
| NMS | Network Management Systems |
| NNR | No-Net-Rotation |
| NNSS | Navy Navigation Satellite System |
| NNT | No-Net-Translation |
| NOAA | (U.S.) National Oceanic and Atmospheric Administration |
| NOCGC | National Office for Cadastre, Geodesy and Cartography, Romania |
| NoE | Network of Excellence |
| NOFS | USNO Flagstaff Station |
| NPC | National Project Coordinator |
| NPL | National Physical Laboratory |
| NPM | Lick Northern Proper Motion Program |
| NRAO | (U.S.) National Radio Astronomy Observatory |
| NRCan | Natural Resources Canada (formerly: EMR) |
| NRL | Naval Research Laboratory |
| NRO | Non-Rotating Origin |
| NRT | near real-time |
| nsc | national service centre |
| NSDI | National Spatial Data Infrastructure |
| NSF | National Science Foundation |
| NSIDC | National Snow and Ice Data Center |
| NSN | National Space Network |
| NSSP | National Survey Seismic Protection |
| NSWC | Naval Surface Weapons Center |
| Ntrip | Networked Transport of RTCM via Internet Protocol |
| NUVEL | Northwestern University Velocity Model |
| NWM | Numerical Weather Model |
| NWP | Numerical Weather Prediction |
| OAM | oceanic angular momentum |
| OASIS | Over-the-Horizon Airborne Sensor Information System |
| OCA | Observatoire de la Côte d'Azur |
| OCCAM | Ocean Circulation and Climate Advanced Modelling Project |
| OCE | orbit and clock error |
| OCE | Orbital and Clock Error |
| OEEPE | Organisation Européene d'Etudes Photogrammétriques Expérimentales / European Organization for Experimental Photogrammetric Research (now EuroSDI) |
| OHP | Operational Hydrological Programme |
| OLG | Observatory Lustbühel Graz, Austria |
| OMCI | Organisation intergouvernementale consultative de la navigation maritime |
| OOSA | United Nations Office for Outer Space Affairs |
| OP | Observatoire de Paris |
| OSO | Onsala Space Observatory |
| OSU | Ohio State University |
| OTCIXS | officer-in tactical-command information exchange system |
| OTH-T | over-the-horizon targeting |
| OTL | ocean tidal loading |
| pai | positioning accurcy improvement |
| PANGA | PAcific Northwest GPS Array |
| PBO | Plate Boundary Observatory |
| PC | Product Centre |
| PCA | Principle Component Analysis |
| PCF | position calculation function |
| PCV | phase center variation(s) |
| PDOP | Percent Dilution of Position |
| PDOP | Position Dilution of Precision |
| PGR | post-glacial rebound |
| PI | pricipal investigator |
| PIVEX | Platform Independent VLBI Exchange Format |
| PM | Programme Manager |
| POL | Proudman Oceanographic Laboratory, Bidston, UK |
| PP | Pilot Project |
| ppb | parts per billion (10'-9) |
| ppm | parts per million (10'-6) |
| PPP | Public Private Partnership |
| PRARE | Precise RAnge and Range-Rate Equipment |
| PSLR | Portable Satellite Laser Ranging System |
| PSMSL | Permanent Service for Mean Sea Level |
| PWV | precipitable water vapor |
| PZT | Photographic Zenith Tube (Telescope) |
| QC | quality control |
| qi | quality indicator |
| QIF | quasi-ionosphere-free |
| RA | right ascension |
| Radarsat AMM | Radarsat Antarctic Mapping Mission |
| RADCOM | radio communications |
| RAOB | Radiosonde Observation |
| RASANT | Radio Aided Satellite Navigation Technique |
| RBF | Réseau de Base Français |
| RBF | Radial Basis Function |
| RDC | Regional Data Centre |
| RDN | Research Data Network |
| RDN | Resource Discovery Network |
| RDN | Reichsdreiecksnetz |
| RDS | Radio Data System |
| RFI | radio frequency interference |
| RGP | Réseau Géodésique Permanente (French Permanent GPS Network) |
| RI | Research Infrastructure |
| RIMS | Ranging and Integrity Monitoring Stations |
| RINEX | Receiver INdependent EXchange format |
| RISE | Reference Frame Specifictions for Europe |
| rms, RMS | Root Mean Square |
| RNAAC | Regional Network Associated Analysis Centre |
| RNAAC SIR | Regional Network Associate Analysis Centre for SIRGAS (IGS) |
| ROB | Royal Observatory of Belgium |
| ROV | remotely operated vehicle |
| RRFID | USNO Radio Reference Frame Image Database |
| RSC | Radio Source Coordinates |
| RSL | relative sea level |
| RT | Real-Time (products) |
| RTAC | Real-time Analysis Centre |
| RTCA | Radio Technical Commission for Aeronautics |
| RTCM | Radio Technical Commission for Maritime Services |
| RTIGS | Real-Time IGS |
| RTK | real time kinematic applications |
| RTWG | Real-Time Working Group |
| SABE | Seamless Aadministration Boundaries of Europe |
| SAO | Smithsonian Astrophysical Observatory |
| SAPOS | Satelliten-Positionier-System der AdV / Satellitenpositionierungsdienst der deutschen Landesvermessung |
| SAR | Synthetic Aperture Radar |
| SB | Special Bureau |
| SBL | Special Bureau for Loading |
| SCAR | Scientific Committee on Antarctic Research |
| SCC | set of station coordinates |
| scg | super conducting gravimetre |
| SCIGAL | Earth Science Applications using GALILEO |
| SCIGN | Southern California Integrated GPS Network |
| SDIC | Spatial Data Interest Communities |
| SEAS | shipboard environmental (data) acquisition system |
| seavar | sea level variation |
| SEDI | Study of the Earth Deep Interior |
| SELENE | SELenological and ENgineering Explorer |
| SFB78 | Sonderforschungsbereich 78 |
| SGO - FOMI | Satellite Geodetic Observatory, Hungary |
| SHA | Shanghai Observatory |
| SI | Système International (International System of Units) |
| SIG | Special Interest Group(s) |
| SIGNAL | Slovenia-Geodesy-Navigation-Location |
| SIM | NASA's Space Interferometry Mission |
| SIMB | Service d'Installation et de Maintenance des Balises DORIS |
| SINEX | Solution (Software/technique) INdependent EXchange Format / Software independent exchange format |
| SIO | Scripps Institution of Oceanography |
| SIRAL | Synthetic Aperture Interferometric Radar Altimeter |
| SIRGAS | Sistema de Referencia Geocéntrico para las Américas (Sistema de Referencia Geocéntrico para América del Sur) |
| sis | signal in space |
| SISA | Signal to Signal Accuray |
| SISE | Signal in Space Error |
| SISE | signal in space error |
| SLR | Satellite Laser Ranging |
| SMA | Slovenian Mapping Agency (Geodetska Uprava Republike Slovenije) |
| SNAP | Sphärische neue lineare analytische Approximation |
| SNR | signal-to-noise ratio |
| SOD | CNES Service d'Orbitographie DORIS |
| SOFA | Standards of Fundamental Astronomy |
| SOPAC | Scripps Orbit and Permanent Array Center |
| SP | special project |
| SPBU | St Petersburg University |
| SPM | Yale/San Juan Southern Proper Motion Program |
| SRIF | Square Root Information Filter array |
| SSALTO | Segment Sol multi-mission d'ALTimétrie, d'Orbitographie et de localisation précise |
| SSC | Sets of Stations Coordinates |
| SSH | sea surface height |
| SSHA | sea surface height anomaly |
| SST | Sea Surface Topography |
| SST | Satellite-to-Satellite Tracking |
| SSTop | Sea Surface Topography |
| SSV | Sets of Stations Velocities |
| StMWFK | Bayerisches Staatsministerium für Wissenschaft, Forschung und Kunst |
| SUT | Slovak University of Technology Bratislava, Slovakia |
| SWEPOS | Swedish network of permanent reference stations / Swedish Positioning System |
| SWIPOS | Swiss Positioning System |
| TAI | Temps Atomique International (International Atomic Time) |
| TC | Technique Centre |
| TCB | Temps-coordonnée barycentrique (Barycentric Coordinate Time, Baryzentrische Koordinatenzeit ) |
| TCG | Temps-coordonnée géocentrique (Geocentric Coordinate Time) |
| TDB | Dynamische Baryzentrische Zeit (Temps Dynamique Barycentrique / Barycentric Dynamical Time) |
| TDT | Terrestrial Dynamical Time |
| TEC | Total Electron Content |
| TEMPO | Time and Earth Motion Precision Observations |
| TEO | Terrestrial Ephemeris Origin |
| TG | tide gauge(s) |
| TGB | Tide Generating Potential |
| TIGA | Tide Gauge Benchmark Monitoring Project (IGS) |
| TIGA | IGS GPS Tide Gauge Benchmark Monitoring |
| TIGO | Transportable Integrated Geodetic Observatory |
| TMA | three mirror anastigmat |
| TN | (IERS) Technical Note |
| TNGRN | New Turkish National GPS RTK Network |
| toc | table of contents |
| TOPEX | Typhoon Operational Experiment |
| TOPO-EUROPE | 4D Topography Evolution in Europe: Uplift, Subsidence and Sea Level Rise |
| ToR | Terms of Reference |
| TOS | tiga observation station |
| TOUGH | Targeting Optimal Use of GPS Humidity Measurements in Meteorology |
| TRF / TRS | Terrestrial Reference Frame / Terrestrial Reference System |
| TS | trime series |
| TT | Terrestrial Time |
| TU | Technische Universität / Technical University |
| TUM | Technische Universität München |
| TWG | Technical / Thematical Working group |
| UBA | Umweltbundesamt |
| UCAC | USNO CCD Astrograph Catalog |
| UCAR | University Consortium for Atmospheric Research |
| UDP | User Datagram Protocol |
| UEGN | United European Gravity Network |
| UERE | User Equivalent Range Error |
| UFAF | University of Federal Armed Forces, Munich (cf UWB) |
| UKMO | U.K. Meteorological Office |
| UMBC | University of Coimbra |
| UNAVCO | UNiversity NAvstar COnsortium |
| UniBw | Universität der Bundeswehr München (cf UFAF) |
| UNIGRACE | Unification of Gravity System in Central and Eastern Europe |
| UNOOSA | United Nations Office for Outer Space Affairs |
| UPA | Universita di Padova, Italy |
| UPAD | Universita di Padova and Telespazio S.P.A. |
| UPD | updated product(s) |
| URL | Uniform Resource Locator |
| URSI | Union Radio-Scientifique Internationale |
| USNO | United States Naval Observatory |
| UT (0,1, 2) | Universal Time (0, 1, 2) |
| UTC | Coordinated Universal Time / Universal Time Coordinated |
| UTEX | University of Texas |
| UTM | Universal Transverse Mercator Coordinate System |
| UTXMO | University of Texas McDonald Observatory |
| UWB | Universität der Bundeswehr München (cf UFAF) |
| VDOP | Vertical Dilution of Precision |
| VLBA | Very Long Baseline Array |
| VLBI | Very Long Baseline Interferometry |
| VMF | Vienna Mapping Function |
| VOL | Variations of Latitude |
| VRS | Virtual Reference Stations |
| VRS | Vertical Reference System |
| VS NIIFTRI | East-Siberian Research Institute for Physics-technical and Radio-technical Measurements |
| VSI | VLBI Standard Interface |
| VTEC | Vertival Total Electron Content |
| VUGTK | Research Institute of Geodesy, Topography and Cartography, Zdiby, Czech Republic |
| WAAS | Wide Area Augmentation System |
| WEGENER | Working Group of European Geoscientists for the Establishment of Networks for Earth science Research |
| WFS | Web Feature Services |
| WG | Working Group |
| WGRF | IAU Working Group on Reference Frames |
| WGS84 | World Geodetic System 1984 |
| WHF | world height frame |
| WHS | World Height System |
| WI-FI | Wireless Fidelity |
| WiPKA | Wissensbasierter Photogrammetrish-Kartographischer Arbeitsplatz |
| WIPO | World Intellectual Property Organization |
| WLRS | Wettzell Laser Ranging System |
| WMO | World Meteorological Organisation / World Organisation of Meteorology |
| WMS | Web Map Services |
| WP | Work(ing) Package |
| WRMS | Weighted Root Mean Square |
| wrt | with respet to |
| WSV | Wasser- und Schifffahrtsverwaltung (Federal Waterways and Shipping Administration) |
| WUT | Warsaw University of Technology, Poland |
| WVR | water vapour radiometer |
| XBT | expendable bathythermograph |
| ZADI | Zentralstelle für Agrardokumentation und -information |
| zfv | Zeitschrift für Geodäsie, Geoinformation und Landmanagement (Zeitschrift für Vermessungswesen) |
| ZHD | zenith hydrostatic delay |
| ZPD | zenith path delay |
| ZTD | zenith troposphere delay |
| ZWD | zenith wet delay |