| Acronym | Meaning |
| FCA | Functional Configuration Audit |
| NCP | Network Control Program |
| GLRS | Geodynamics (or Geoscience) Laser Ranging System |
| GPS CORS | Global Positioning System Continuously Operating Reference Stations |
| ISPRA | N/A |
| ETA | A Vendor Of Supercomputers And Associated Software |
| SR | Scanning Radiometer |
| SDD | Systems Development Division |
| NAVSTAR | NAVigation Signal Timing And Ranging System |
| D/A | Digital-to-analogue Conversion |