| Acronym | Meaning |
 | UGGI | See IUGG |
| ATM | Apollo Telescope Mount |
| UHF | Ultra-high Frequency |
| EPI | Electronic Position Indicator |
| IPS | Inches Per Second |
| OSTIV | Organization Scientifique Et Technique Internationale Du Vol A Voile (conferences) |
| LEADEX | Lead Experiment |
| PGGA | Permanent GPS Geodetic Array |
| ICA | International Central Archive |
| SDM | Suit Of Software For UNIX-based Computing Platforms |
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