| Acronym | Meaning |
| SARSAT | Search And Rescue Satellite-Aided Tracking |
| PID | Prototype International Directory |
| ESA | European Space Agency |
| EMG | Electromagnetic Gravity Data |
| PCWG | Polar Climate Working Group |
| ICD | Interface Control Document |
| TB | Terabytes |
| AMFS | Advanced Manufacturing Feasibility Studies |
| UUCP | UNIX-to-UNIX Copy |
| PHIGS | Portable Hierarchical Image And Graphic Standard |