| Acronym | Meaning |
| EODC | Earth Observation Data Centre |
| JERS | Japanese Earth Resources Satellite |
| GEODSS | Ground-based Electro-optical Deep-space Surveillance System |
| JAEL | JSC Avionics Engineering Laboratory |
| STARCAL | Star Calibration |
| NOCC | Network Operations Control Center |
| JGR | Journal Of Geophysical Research |
| CADH | Communications And Data Handling |
| PEM | Particle Environment Monitor |
| GHA | Greenwich Hour Angle |