| Acronym | Meaning |
 | IWGMFS | International Working Group On Magnetic Field Satellites |
| NAVAID | Navigation Aid |
| ESL | Earth Sciences Laboratories |
| GRD | Geophysics Research Directorate |
| FCA | Functional Configuration Audit |
| PSID | Pounds Per Square Inch Differential |
| SAR | Synthetic Aperture Radar |
| MVS/XA | Multiple Virtual Systems/Extended Architecture |
| CASH | Commercial Aviation Sensing Humidity Program |
| DORIS | Determination D'Orbite Et Radiopositionement Integre Par Satellite |
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