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SDA Expands Ground Architecture for Missile Tracking

September 22, 2026

2 min read

Key Takeaways

SDA to award Tranche 3 ground architecture contract in late 2026 or early 2027.
Expansion supports growing fleet of missile warning and tracking satellites.
New ground entry points to be built at locations worldwide.
Tranche 3 to feature 108 spacecraft.

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Strategic Implications

This expansion may indicate SDA's growing focus on resilient and global missile tracking capabilities. The transition to an enterprise model for Tranche 3 suggests a shift towards more integrated and scalable ground systems, which could enhance the overall performance and resilience of the Proliferated Warfighter Space Architecture.

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What Happened

Space Agency Seeks Bids for Global Ground Entry Points

The Space Development Agency is opening a competition to expand its ground architecture to support a growing fleet of missile warning, tracking, and defense satellites. The agency plans to choose a single company to build, install, and maintain up to eight new ground entry points and to perform upgrades at current sites. This expansion will support Tranche 3 of the Proliferated Warfighter Space Architecture, a low-Earth orbit constellation envisioned to include hundreds of data transport and missile tracking satellites. The Space Development Agency’s plans were first reported by an unknown source.

Source | Originally Published: September 21, 2026

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