| Acronym | Meaning |
| FRC | Federal Records Center |
| INPE | Instituto De Pesquisas Espaciais |
| IPU | Instrument Processor Unit |
| AMTS | Advanced Moisture And Temperature Sounder |
| NWSTG | National Weather Service Telecommunications Gateway |
| PACT | Professional Association Of Computing And Technology |
| DSAA | Defense Security Assistance Agency |
| MSF | Magnetic Flux Structures |
| SPC | Small Particle Count (or Counter) |
| STP | Solar Terrestrial Physics |