| Acronym | Meaning |
| W | Watt |
| BUOU | Backup Optical Unit |
| MPB | Maintenance Parts Breakdown |
| SSIP | Systems Software Interface Processing |
| ECI | Earth Centered Inertia (inertials) |
| ESOW | Engineering Statement Of Work |
| OVV | Overvoltage |
| INTG | Integration |
| P&M | Phase Modulation (Modulated) |
| BP | Bandpass |