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The Near Earth Network (NEN, formerly GN or Ground Network) provides orbital communications support for Near-Earth orbiting customer platforms via various NASA ground stations.
The NEN falls under NASA's SOMD (Space Operations Mission Directorate), interoperating with the SCaN Program offices. The Goddard Space Flight Center Ground Network Project has responsibility for maintaining the NEN, as well as implementing the Satellite laser ranging (SLR) Network.
Support for Constellation
The NEN was slated to support the Constellation Program, including the Ares launch vehicle, NISN (NASA Integrated Services Network), FDF (Flight Dynamics Facilities), KSC Launch Control Center, and the Constellation Mission Control Center (MCC). Constellation has since been canceled.
^NASA Goddard Space Flight Center, Exploration and Space Communications Projects Division (August 2007). Space Network User's Guide (SNUG), 2.4, Supporting Elements Outside the SN, (e), "Ground Network (GN)" (Rev 9 ed.). National Aeronautics and Space Administration. p. 2.13. 450-SNUG.
Footnotes
Constellation Architecture Requirements Document (CARD), CxP 70000, Revision C (December 25, 2008). NASA: Constellation Systems Engineering and Integration Office
Space Network User's Guide (SNUG), 450-SNUG, Rev 9.