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Space Network
July 14, 2014

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The Space Network (SN) was established in the early 1980s to replace NASA's worldwide network of ground tracking stations.

The Space Network consists of:

  • A constellation of geosynchronous (Earth orbiting) satellites named the Tracking Data Relay Satellite (TDRS)
  • Ground systems that operate as a relay system between satellites
  • Satellites in low Earth orbit (LEO) above 73 km
  • Ground facilities

Network Availability

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The Space Network is operated 24 hours a day, seven days a week, 365 days per year. Operations on the network run above 99.5% proficiency every month. Usually the Space Network operates above 99.9%.

› Space Network Ground Segment Sustainment (SGSS)

Services provided by the Space Network are:

  • Telecommunications
  • Tracking and clock calibration
  • Testing and analysis

› Space Network Reimbursable Rates 2014 (PDF)
› Scheduling Services

Map of Space Network Sites

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Guam Remote Ground Terminal
White Sands Complex, New Mexico

Space Network
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Space Network
Space Network
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Second TDRSS Ground Terminal (STGT)
Second TDRSS Ground Terminal (STGT)
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Guam Remote Ground Terminal (GRGT)
Guam Remote Ground Terminal (GRGT)
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Page Last Updated: July 14th, 2014
Page Editor: Thuy Mai