TDRSS Ground Terminals
The two TDRSS satellite ground terminals are located at NASA White Sands Complex, which is in the Las Cruces area. All radioed commands and received telemetry that go to and from the Tracking and Data Relay Satellites go by way of these terminals at the White Sands Complex. At first, just one large ground terminal system for the TDRSS was designed and built. However, some years later, due to increased user demand NASA ordered the design and construction of a second ground terminal system about 5 kilometres (3.1 mi) away. Thus, there are now two functionally identical and redundant satellite ground terminals there, which are known as the White Sands Complex. Due to a Zone of Exclusion, no user support over the Indian Ocean, a Ground Terminal was built in Guam to support TDRS.
Read more about this topic: Tracking And Data Relay Satellite
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