| CORS | Continuously Operating Reference Stations |
| COSMIC | Constellation Observing System for Meteorology Ionosphere and Climate |
| CYGNSS | Cyclone Global Navigation Satellite System |
| DART | Deep-ocean Assessment and Reporting of Tsunamis |
| DEM | digital elevation model |
| DORIS | Doppler Orbitography and Radiopositioning Integrated by Satellite |
| GEDI | Global Ecosystem Dynamics Investigation |
| GGOS | Global Geodetic Observing System |
| GIA | glacial isostatic adjustment |
| GNSS | Global Navigation Satellite System |
| GNSS-IR | GNSS Interferometric Reflectometry |
| GNSS-R | GNSS Reflectometry |
| GNSS-RO | GNSS Radio Occultation |
| GPS | Global Positioning System |
| GRACE | Gravity Recovery and Climate Experiment |
| GRACE-FO | GRACE Follow On |
| GRUAN | Global Climate Observing System Reference Upper-Air Network |
| IAG | International Association of Geodesy |
| ICESat | Ice, Cloud, and land Elevation Satellite |
| IDS | International DORIS Service |
| IERS | International Earth Rotation and Reference Systems Service |
| IGS | International GNSS Service |
| ILRS | International Laser Ranging Service |
| InSAR | Interferometric Synthetic Aperture Radar |
| IPCC | Intergovernmental Panel on Climate Change |
| ITRF | International Terrestrial Reference Frame |
| IVS | International VLBI Service for Geodesy and Astrometry |
| JPL | Jet Propulsion Laboratory |
| M | magnitude |
| NASA | National Aeronautics and Space Administration |
| NGA | National Geospatial-Intelligence Agency |
| NGS | National Geodetic Survey |
| NISAR | NASA-Indian Space Research Organisation Synthetic Aperture Radar |
| NOAA | National Oceanic and Atmospheric Administration |
| NOTA | Network of the Americas |
| NSF | National Science Foundation |
| NSRS | National Spatial Reference System |
| PBO | Plate Boundary Observatory |
| Pol-InSAR | Polarimetric SAR Interferometry |