Submitted by liem on Mon, 02/25/2013 - 12:14
The Tracking and Data Relay Satellite (TDRS) system represents a new era in tracking Earth-orbiting
spacecraft, including the Space Shuttle, and transmitting their data back to Earth. The TDRS concept
was conceived following early 1970s studies which showed that a system of orbiting
telecommunications satellites, operated from a single ground terminal link, could more effectively
support Space Shuttle, scientific and other NASA mission requirements than the nearly 25-year-old
tracking and communications network of ground stations located worldwide.
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