| Acronym | Meaning |
| AC | Alternating Current |
| EROS | Earth Resources Observing System |
| AVHRR | Advanced Very High Resolution Radiometer |
| GMT | Greenwich Mean Time (repl. By UTC) |
| MSS | Multi-Spectral Scanner |
| CONUS | CONtinental (or CONterminus) United States |
| JPL | Jet Propulsion Laboratory |
| DORIS | Doppler Orbitography And Radiopositioning Integrated By Satellite (EOS) |
| XBSS | X-ray Background Survey Spectrometer |
| EUMETSAT | EUropean Organization For The Exploitation Of METeorological SATellites |