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The Space Tracking and Surveillance System Advanced Technology Risk Reduction
(STSS ATRR) satellite has successfully demonstrated required on-orbit system
performance parameters for a prototype sensor technology. Additionally, STSS ATRR
has been conducting Space Situational Awareness (SSA) and related operations on an
as-capable basis. The Missile Defense Agency (MDA) is coordinating the transfer of STSS
ATRR operational control to Air Force Space Command to continue support for the SSA
mission area.
STSS ATRR was launched May 5, 2009 from Vandenberg Air Force Base. STSS ATRR
is a small experimental satellite that serves as a pathfinder for prototype sensor
technology and future MDA space missions.