| Acronym | Meaning |
| CCB | Configuration Control Board |
| IMP | Interface Message Processor ARPANET |
| ADC | Authorized Derivative Classifier |
| RCA | Request For Contract Action |
| EOSDIS | Earth Observing System Data And Information System |
| ETH | Eidgenossische Technische Hochschule |
| ISIS | International Satellites For Ionospheric Studies |
| PPS-PODS | Precise Position System- Precise Orbit Determination System |
| SGGE | Second GARP Global Experiment |
| HVPS | High-volume Precipitation Spectrometer |