| Acronym | Meaning |
| CNES | Centre National D'Etude Spatiales |
| TIROS | Television InfraRed Observation Satellite |
| GMS | Geostationary Meterological Satellite |
| SSRV | Solar-Sail Race Vehicle |
| ACF | Automated Control Function |
| ORFEUS | Orbiting And Retrievable Far And Extreme Ultraviolet Spectrometer |
| MODIS-T | MODIS-Tilt |
| NBS | National Bureau Of Standards |
| XMM | X-ray Multi Mirror |
| RFI | Radio Frequency Interference |