| Acronym | Meaning |
| AC | Alternating Current |
| HSB | Humidity Sounder For Brazil |
| HIRES | HIgh RESolution |
| HZ | Hertz |
| OAO | Orbiting Astronomical Observatory |
| MAS | MODIS Airborne Simulator |
| OSSE | Office Of Space Science Education (SSEC) |
| MODIS | MODerate-resolution Imaging Spectroradiometer (EOS) |
| AOT | Aerosol Optical Thickness |
| XBSS | X-ray Background Survey Spectrometer |