| Acronym | Meaning |
| PDM | Pulse Duration Modulation |
| ATSR | Along Track Scanning Radiometer |
| CAD | Computer-Aided Dispatch |
| NRLSI | National Reference Library Of Science And Invention |
| GFY | Government Fiscal Year |
| OUASS | Omega Upper Atmospheric Sounding Systems |
| MOA | Memorandum Of Agreement |
| EWF | Early Warning Form |
| MODCOMP | A Machine Manufactured By Modular Computer Systems Inc. |
| APR | Aberdeen Pulsed Reactor Facility |