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Spacecraft Tracking and Data Acquisition Network

Orroral Valley STADAN control panel, at the National Museum of Australia

The Spacecraft Tracking and Data (Acquisition) Network (STADAN or STDN) was established by NASA in the early 1960s to satisfy the requirement for long-duration, highly available space-to-ground communications. The network was the “follow-on” to the earlier Minitrack, which tracked the flights of Sputnik, Vanguard, Explorer, and other early space efforts (1957–1962). Real-time operational control and scheduling of the network was provided by the Network Operations Control Center (NOCC) at the Goddard Space Flight Center (GSFC) in Greenbelt, Maryland.[1]

Consisting of parabolic dish antennas and telephone switching equipment deployed around the world, the STADAN provided space-to-ground communications for approximately 15 minutes of a 90-minute orbit period. This limited contact period sufficed for uncrewed spacecraft, but crewed spacecraft require a much higher data collection time. In May 1971 STADAN was consolidated with the Manned Space Flight Network (MSFN) to form the Spaceflight Tracking and Data Network (STDN).[2]

  1. ^ STDN User's Guide, Baseline Document, Rev. 2, Goddard Spaceflight Center: Greenbelt, MD, May 1974, p. 1-1
  2. ^ STDN User's Guide, Baseline Document, Rev. 2, Goddard Spaceflight Center: Greenbelt, MD, May 1974, p. 1-9
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