| Acronym | Meaning |
 | NGS | National Geodetic Survey |
| VSP | Visiting Scientist Programs |
| TUV | Tropospheric Ultraviolet And Visible Radiation Model |
| MODE | MODE In Cospar Papers |
| VSM | Vertical Slab Model |
| DETEC | Defense Technology Evaluation Code |
| AT | Accelerator Technology |
| ACE | Aerosol Characteristics Experiment |
| VRR | Visual Radio Range |
| FEMA | Federal Emergency Management Agency |
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