Space Tracking & Surveillance System (STSS)

Northrop Grumman Space Technology is developing STSS, a critical enabler for the nation’s missile defense architecture.  Operating in low-earth orbit, STSS satellites will use onboard infrared sensors to detect, track and discriminate ballistic missiles throughout their trajectories.  As the Missile Defense Agency’s only global tracking system, STSS will work with other assets to improve the performance of the overall missile defense system.
 
The STSS project integrates key members of previously competing teams to focus industry’s best talent on reducing technology risk for this vital capability.  Under subcontract to Northrop Grumman, Spectrum Astro will play a key role in spacecraft development; Raytheon and Northrop Grumman will develop sensor payloads under competitive subcontracts.
 
STSS will be developed using an evolutionary, capabilities-based approach.  Today’s hardware and software technologies will be demonstrated quickly and cost-effectively.  On-orbit evaluation will identify opportunities to insert advanced technologies downstream.  This approach allows the prudent use of new developments and lays the groundwork for intelligent production decisions.  The first STSS satellites are now scheduled for launch in 2006 – 2007, to be followed by enhanced capability satellites.