| Acronym | Meaning |
| PGA | Pressure Garment Assembly |
| NIL | NNIL No Limit (NL Preferred) |
| LOFAR | Low Frequency Acquisition And Ranging |
| GM | Geometric Mean |
| SACS | Software Avionics Command SuPport |
| SOCC | Satellite Operations Control Center |
| EMON | ExceptionMonitoring |
| T | Total Temperature |
| QPSK | Quadrature Phase Shift Key |
| SCRSY | Serialized Control And Record SYstem |