| Acronym | Meaning |
| HEOS | Highly Eccentric Orbit Satellite |
| ITS/OT | Institute For Telecommunications |
| AFCRL | Air Force Cambridge Research Laboratories |
| DAF | Data Acquisition Facility |
| DAC | Director's Advisory Committee |
| TMS | Thermatic Mapper Simulator |
| AUSPEX | Atmospheric Utility Signatures-Predictions And Experiments |
| CAT | Clear Air Turbulence |
| DRGS | Direct Read-out Ground Station |
| LEADEX | Lead Experiment |