| Acronym | Meaning |
 | ADM | Action Description Memorandum |
| F | Frequency |
| FPI | Fabry-Perot Interferometer |
| LLR | Lunar Laser Ranging |
| GGS | Global Geospace Science Program |
| DIA | Direct-interaction Approximation |
| GCCDF | Generic Control Center Development Facility |
| IIOE | International Indian Ocean Expedition |
| MGA | Meteorological And Geoastrophysical Abstracts |
| SAS | Small Astronomy Satellite |
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