| Acronym | Meaning |
 | HF | High Frequency |
| AOSO | Advance Orbiting Solar Observatory |
| CCCC | Center For Clouds |
| HI | Human Interface |
| AIS | Affiliate And Immigration Services |
| GRM | Geopotential Research Mission |
| SMAGS | SPAN/MASnet Gateway Server |
| MDM | Multiplexer/demultiplexer |
| O AND A | Orbit And Altitude |
| NCDS | NASA Climate Data System |
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