| Acronym | Meaning |
 | GONG | Global Oscillations Network Group |
| KRMS | Ka-band Radiometer Mapping System |
| EPOP | European Polar Orbiting Platform |
| SCCCAMP | South Central Coast Cooperative Aerometric Monitoring Program |
| ACS | Automated Cartridge System |
| PA | Position Angle |
| PSAC | President's Science Advisory Committee |
| ACEC | American Consulting Engineers Council |
| PPS-PODS | Precise Position System- Precise Orbit Determination System |
| TOPS | Transcendental Operating System |
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