| Acronym | Meaning |
 | HZ | Hertz |
| GEOSAT | GEOdetic SATellite |
| HIRS | High-resolution Infrared Radiation Sounder |
| SSU | Stratospheric Sounding Unit (TOVS) |
| SHARP | Summer High School Apprenticeship Research Program (NASA) |
| LIDAR | LIght Detection And Ranging |
| HIRIS | HIgh-Resolution Imaging Spectrometer (EOS) |
| IRIS | Infrared Radiation Interferometer Spectrometer (1960s) |
| FSL | Forecast Systems Laboratory (a NOAA ERL) |
| PIFTS | Planetary Imaging Fourier Transform Spectrometer |
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