| Acronym | Meaning |
| AOM | Annual Operating & Maintenance |
| UI | Unit Of Issue |
| HRDI | High Resolution Doppler Interferometer |
| ASI | Agenzia Spaxiale Italiano |
| DSSG | Defense Science Study Group |
| UHF | Ultra-high Frequency |
| MAC | Multiple Access Computer |
| FAME | Formatting And Multiplexing Equipment |
| DOE/SR | DOE Savannah River |
| ESD | Environmental Satellite Data |