| Acronym | Meaning |
 | DTR | Development And Test Resource |
| BIT | Built-in Test |
| NATS | NCAR Aircraft (or Airborne) Telemetry System |
| SPAR | Spaceborne Rawinsonde |
| ACE | Alliance For Clean Energy |
| RCAG | Remote-controlled Air-to-ground |
| AVN | Aviation Model At NCEP |
| ODE | Ordinary Differential Equation |
| OTS | Office Of Technical Services |
| EOL | End Of Life |
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