| Acronym | Meaning |
| KPNO | Kitt Peak National Observatory Arizona |
| SDHS | Satellite Data Handling System |
| SEDI | Structure Of The Earth's Deep Interior |
| GPS | Grants Program Section |
| ASCII | American Standard Code For Information Interchange |
| ATR | Alliance For Transportation Research |
| VLBI | Very Long Baseline Interferometry |
| EAG | Exposure Assessment Group |
| OSL | Orbiting Solar Laboratory |
| PDE | Partial Differential Equation |