| Acronym | Meaning |
 | GPS-IPW | Global Positioning System-Integrated Precipitable Water |
| ELVD | Every Launch Vehicle Directorate |
| GEISA | Management And Study Of Atmospheric Spectroscopic Information |
| PD | Positive Definite |
| PE | Payload Executive |
| IPS | Inches Per Second |
| IGE | International Group Elements |
| SSL | Space Sciences Laboratory |
| GAMIT | Not An Acronym |
| BDL | Boundary Layer |
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