| Acronym | Meaning |
| CAS | Commission For Atmospheric Science |
| VMS | Virtual Memory Systems |
| ISRDB | Incoherent Scatter Radar Data Base |
| AW | Annual Worth |
| ISAMS | Improved Stratospheric And Mesospheric Sounder |
| LL | Lincoln Laboratories |
| AC | Alternating Current |
| IDB | Immediate Direct Broadcast |
| AMS | Appraisal Management System |
| PRF | Pulse Repetition Frequency |