Satellite Communications Systems

The Defense Satellite Communications System (DSCS) provides the United States with military communications to support globally distributed military users. Beginning in 2007, DSCS is being replaced by the Wideband Global SATCOM system. A total of 14 DSCS-III satellites were launched between the early 1980s and 2003. Two satellites were launched aboard the Space Shuttle Atlantis in 1985 during the STS-51-J flight. As of 23 November 2015, seven DSCS-III satellites were still operational. DSCS operations are currently run by the 3d Space Operations Squadron out of Schriever Air Force Base.

  • Satellite orbits
  • Low, medium and high earth orbits
  • Ground segment, propagation effect
  • Satellite telephony, television and radio
  • Space segment
  • TCP over satellite
  • Geosynchronous orbit

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