| Acronym | Meaning |
| ASC | ASTER Steering Committee |
| PFU | Proto Flight Unit |
| FSSP | Forward Scattering Spectometer Probe |
| IIT | Illinois Institute Of Technology |
| CCR | Climate Change Research |
| NSB | National Science Board |
| NTN | National Telecommunications Network |
| GGI | GPS Geoscience Instrument |
| NEXUS | Navaid-based Upper- Air Sounding System |
| AAM | Airborne Activity Monitor |