| Acronym | Meaning |
| GEOSAT | GEOdetic SATellite |
| KM | Kilometer |
| NCEP | National Centers For Environmental Prediction (form. NMC; NWS Center) |
| DORIS | Doppler Orbitography And Radiopositioning Integrated By Satellite (EOS) |
| VLF | Very Low Frequency |
| MAS | MODIS Airborne Simulator |
| OAO | Orbiting Astronomical Observatory |
| PIFTS | Planetary Imaging Fourier Transform Spectrometer |
| AIRS | Atmospheric InfraRed Sounder (EOS) |
| ERSC | Environmental Remote Sensing Center (IES) |