| Acronym | Meaning |
 | GYROCOMP | Gyrocompassing |
| DWS | Disaster Warning Satellite |
| HL | High Level |
| POP | Preflight Operations Procedures |
| CVT | Communications Vector Table |
| EVC | Extravehicular Communications |
| EMPGS | Electrical/Mechanical Power Generation SubsYstem |
| GDBS | Generalized Data Base System |
| HG | High Gain |
| ESTEC | European Space Research And Technology Center |
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