SpaceX Falcon 9 launches the Space Development Agency T1TL-C mission to low-Earth orbit from Space Launch Complex 4E at Vandenberg Space Force Base, Calif., Oct. 15., 2025. Beginning in 2027, T1 will provide initial warfighting capability to deliver regional persistence for tactical military data channels, along with advanced missile tracking and missile warning, and beyond-line-of-sight targeting plus demonstration of UHF and S-band tactical satellite communications. (U.S. Space Force photo by 2nd Lt. Andrew Taller)
The Space Data Network has multiple components and will support a number of Pentagon-wide efforts, including the Golden Dome for America missile defense architecture.
Northrop Grumman’s TRKT3 will build on the Tracking Layer capabilities of Tranche 1 and Tranche 2 with targeted technology enhancements, expanded coverage and increased integration including precision fire-control sensing. (Photo Credit: Northrop Grumman)
The Tranche 3 tracking layer will comprise 72 satellites to provide near-continuous global coverage, with half featuring payloads able to create fire-control data.
SDA was looking to build out PNT capabilities in the Tranche 3 transport layer of the Proliferated Warfighter Space Architecture, which the Department of the Air Force…
SDA is looking for input on Tranche 3 as it aims to “accelerate the proliferation of missile defense capability to provide low-latency fire control-quality data."
"The next big debate going on for transport is: what are the next tactical data links that we’re going to proliferate in Tranche 3?" SDA Director Derek…