| Acronym | Meaning |
 | LTER | Long-Term Ecological Research Program |
| R/T | Receiver/Transmitter |
| SST | Supersonic Transport |
| GEMS | Global Environment Monitoring System |
| ARIN | Aerospace Resource Information Network |
| PSOS | Profiler Surface Observing System |
| GMCC | Geophysical Monitoring For Climatic Change |
| NCSA | National Center For Supercomputing Applications |
| ENRI | Electronic Navigation Research Institute |
| ECR | Engineering Change Request |
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