Glossary of terms
| A-CDM | Airport Collaborative Decision Making |
| ATC | Air Traffic Control |
| CAT | Category (e.g., CAT I, CAT II, CAT III) |
| DFMC | Dual-Frequency Multi-Constellation |
| EC | European Commission |
| EDA | European Defence Agency |
| EASA | European Union Aviation Safety Agency |
| ESA | European Space Agency |
| GAST | GBAS Approach Service Types |
| GBAS | Ground-Based Augmentation System |
| GNSS | Global Navigation Satellite System |
| GS | Ground Station |
| GSB | Ground Systems Branch |
| ICAO | International Civil Aviation Organization |
| ILS | Instrument Landing System |
| RFI | Radio Frequency Interference |
| RTCA | Radio Technical Commission for Aeronautics |
| SARP | Standards and Recommended Practices |
| TRL | Technology Readiness Level |
| WG | Working Group |
