| Acronym | Meaning |
| SP | Shuttle Projects Office (KSC) |
| NAVSAT | Navigation Satellite |
| CPSS | Critical Phase System Software |
| SRDH | Subsystems Requirement Definition Handbook |
| MCDS | Multifunction CRT Display System |
| WBT | Wide-Band Terminal |
| VGOR | Vandenberg Ground Operations Requirement |
| ISL | Inertial Systems Laboratory |
| PSA | Payload Support Avionics |
| RTCC | Real-Time Command Controller |