| Acronym | Meaning |
 | FPI | Fabry-Perot Interferometer |
| PELTI | Passing Efficiency For The Low Turbulence Inlet |
| AVC | Advanced Vector Computer |
| XMDSL | X Window Interface Distributed Software Library |
| FAGS | Federation Of Astronomical And Geophysical Services |
| UPS | Uninterruptible Power Supply |
| ARSR | Air Route Surveillance Radar |
| IFR | Instrument Flight Rules |
| GTOS | Global Terrestrial Observing System |
| NESC | National Environmental Satellite Center |
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