| Acronym | Meaning |
| SSPS | Sky Survey Prototype System |
| CDS | Command And Data Subsystem |
| HRSR | High-Resolution Scanning Radiometer |
| RTG | Radioisotope Thermoelectric Generator |
| SPTN | SPARTAN |
| ENAC | Energetic Neutral Atom Camera |
| CFHT | Canada-France-Hawaii Telescope |
| ERS | Environmental Research Satellite |
| BNSC | British National Space Centre |
| NORAD | NORth American Aerospace Defense |