| Acronym | Meaning |
| LTV | Ling-Temco-Vaught Inc. |
| IAG | International Association Of Geodesy |
| SIGMA | Software For Interactive Graphics And Model Analysis |
| ASEP | Accident Sequence Evaluation Program |
| PIRAC | PC-based Integrated Radar Acquisition Card |
| CDR | Critical Design Review |
| HIRIS | High Resolution Imaging Spectrometer |
| LPM | Lines Per Minute |
| TOSS | Tiros Operational Satellite System |
| RPM | Radiation And Particles Measurement |