| Acronym | Meaning |
 | GDAS | Global Data Assimilation System |
| PPS-PODS | Precise Position System- Precise Orbit Determination System |
| OC | Operational Capability |
| WMP | Weather Modification Program |
| ACR | Active Cavity Radiometer |
| EERU | Environmental Emergency Response Unit |
| DA | Drift Angle |
| PMA | Platform Management Application |
| AIDS | Autoimmune Deficiency Syndrome |
| TIROS I | Television Infrared Observation Satellite |
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