The milestone marks an important step towards delivering next-generation, space-based missile defence capabilities for the United States.
The PDR confirmed the baseline designs for L3Harris’ TRKT3 mission solution, which provides ground, networking, satellite, communications and infrared payloads.
The integrated system will deliver infrared sensing, advanced on-orbit data processing and accurate real-time threat detection algorithms.
“Beginning with Tranche 0, L3Harris’ disciplined spiral development approach has improved missile warning, tracking and defence capabilities required to address modern threats,” said Jeff Hanke, president, space systems, Space & Mission Systems, L3Harris.
“That institutional knowledge is what drives speed and precision on programs and underscores why L3Harris is a trusted industry partner across SDA’s tracking layer mission.”
Once on orbit, the TRKT3 satellites will deliver near-continuous global missile warning and tracking. They will operate as part of the SDA’s Proliferated Warfighter Space Architecture, a component of the nation’s layered missile defence strategy.
L3Harris received an SDA contract in December 2025 to design and build 18 space vehicles for the T3 Tracking Layer. L3Harris has more than 70 missile tracking and defence satellites on order in support of the Proliferated Warfighter Space Architecture.
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