| Acronym | Meaning |
| BU | Bargaining Unit |
| LF | Low Frequency |
| PCAST | President's Council Of Advisers On Science And Technology |
| SPTVAR | Special Purpose Test Vehicle For Atmospheric Research |
| RPG | Radar Product Generator |
| AFCRL | Air Force Cambridge Research Laboratories |
| GAPEX | Ground-based Atmospheric Profiling Experiment |
| TES | Transequatorial Scatter |
| M-ANL | Argonne National Laboratory |
| M-PDU | Multiplexed Protocol Data Unit |