| Acronym | Meaning |
| HMES | Hough Mode Extensions |
| TGCM | Thermospheric General Circulation Model |
| DCS | Direct Connect Service |
| ERT | Environmental Research And Technology |
| NOAH | Comprised Of The National Centers For Environmental Protection |
| OWWS | Office Of World Weather Systems |
| INDEX | Indian Ocean Experiment |
| PRT | Pulse Repetition Time |
| CCM | Community Climate Model |
| ARGOS | French Satellite-borne Data Relay And Platform Location System |