| Acronym | Meaning |
| RCA | Request For Contract Action |
| FIRE | First ISLSCP Regional Experiment |
| FIRS | Fourier Transform Infrared Sounder |
| IWRA | International Water Resources Association |
| TROPOZ | Tropospheric Ozone Experiment |
| CCTP | Clean Coal Technology Program |
| FOC | Full Operational Capability |
| SIGMA | Software For Interactive Graphics And Model Analysis |
| PSN | Piano Spaziale Nazionale |
| OPLE | OMEGA Position And Location Experiment |