| Acronym | Meaning |
![](file.png) | TTC | Telemetry |
![](file.png) | NOAA | National Oceanic And Atmospheric Administration |
![](file.png) | GUGK | Glavnoye Upravileniye Geodesii I Kartografii |
![](file.png) | SPAS | Space Pallet Satellite |
![](file.png) | ISO | Imaging Spectrometic Observatory |
![](file.png) | TSS | Targeted Search System / Tethered Satellite System |
![](file.png) | ADS | Astrophysical Data System (at Havard-Smithsonian CfA) |
![](file.png) | MMT | Multiple Mirror Telescope |
![](file.png) | ETR | Eastern Test Range |
![](file.png) | INTELSAT | International Telecommunications Satellite |