SBIRS (Space-Based Infrared System)
The initial ground phase of SBIRS, called Increment 1, became operational in 2001, using a new consolidated ground architecture that processes data from current on-orbit DSP satellites. The first component of the Increment 2 constellation, which will ultimately including two HEO (high Earth orbit) payloads and multiple satellites in geosynchronous earth orbit, was launched in 2006.
Related category MILITARY RECONNAISSANCE AND SURVEILLANCE
Source: U.S. Air Force
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