| Acronym | Meaning |
| SFD | Crossfeed |
| GCOS | Ground Computer Operating System |
| OPDAR | OPtical Detection And Ranging |
| CMS-2 | Cambridge Monitoring System (IBM Computer Program) |
| PAM-A | PAM |
| CDMS | Command And Data Management Subsystem |
| ROC | Request Of Change |
| RC | Reverse Current |
| SR | Statement Of Requirements |
| LOM | Input/Output Module |