| AdV | Working Committee of the Surveying Authorities of the States of the Federal Republic of Germany |
| CEE | Central and Eastern Europe |
| CEEC | Central and Eastern European Countries |
| CEGRN | Central European GPS Geodynamic Reference Network |
| CEI | Central European Initiative |
| CEOS | Committee on Earth Observation Satellites |
| CERGOP | Central European Regional Geodynamics Project |
| DGNSS | Differential Global Navigation Satellite System |
| EA.UE | European Academy of the Urban |
| EC | European Environment Commission |
| EPN | EUREF Permanent Network |
| ERDF | European Regional Development Fund |
| ETRF89 | European Terrestrial Reference Frame 1989 |
| ETRS89 | European Terrestrial Reference System 1989 |
| EU | European Union |
| EUPOS® ISC | International EUPOS® Steering Committee |
| EUPOS® ISCO | International EUPOS® Steering Committee Office |
| EUPOS® NSC | National EUPOS® Service Centre |
| EUPOS® | European Position Determination System |
| EUPOS®-IRC | European Position Determination System – InterRegional Cooperation |
| EUREF | European Reference Frame |
| GFZ | Geo-ForschungsZentrum |
| GIS | Geographic Information Systems |
| GLONASS | Global Navigation Satellite System, Russian Federation |
| GNSS | Global Navigation Satellite System |
| GPRS | General Packet Radio Service |
| GPS | Global Positioning System (= NAVSTAR-GPS), USA |
| GSM | Global System for Mobile Communications |
| IAG | International Association of Geodesy |
| ICAO | International Civil Aviation Organization |
| ICG | International Committee on GNSS |
| IGS | International GPS Service |
| INTERREG | Community initiative, which aims to stimulate interregional co-operation in the EU between 2000-06 |
| ISC | International EUPOS Steering Committee |
| ISPA | Instrument for Structural Policies for Pre-Accession |
| ITRF89 | International Terrestrial Reference Frame 1989 |
| NAVSTAR-GPS | Navigation System with Time and Ranging - Global Positioning System (= GPS) |
| NSC | National EUPOS Service Centre |
| RNAAC | Regional Associate Analysis Centre |
| RTCM | Radio Technical Commission for Maritime Services |
| RTK | Real-time Kinematics |
| SAPOS® | Satellitenpositionierungsdienst der deutschen Landesvermessung,
German National Survey Satellite Positioning Service |
| SQII | EUPOS Working Group on System Quality, Integrity and Interference Monitoring |
| TCI | EUPOS Working Group on Technical Cooperation with the Industry |
| TEC | Total Electron Content |
| UN OOSA | United Nations Office for Outer Space Affairs |
| UN | United Nations |
Abbreviations 
