| Acronym | Meaning |
 | IGB | International Geophysical Bulletin |
| NGDC | National Geophysical Data Center |
| CCR | Commitment |
| ITM | Ionosphere-Thermosphere-Mesosphere |
| PPU | Peripheral Processor Unit |
| MOS | Marine Observation Satellite |
| PERL | Practical Extraction And Report Language |
| AOM | Annual Operating & Maintenance |
| MS | The Company Microsoft |
| FFTF | Fast Flux Test Facility |
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