SpaceX successfully launched the GPS III Space Vehicle 10 (SV10) for the United States Space Force on April 21, 2026, completing the deployment of the third-generation Global Positioning System constellation. The mission utilized a Falcon 9 rocket, which lifted off from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida at 12:15 p.m. EDT. This launch represents the final delivery in the GPS III series, a critical modernization effort for the world’s most widely used satellite navigation system.
The GPS III SV10 satellite, manufactured by Lockheed Martin, was successfully deployed into a medium Earth orbit approximately one hour and 50 minutes after launch. Following stage separation, the Falcon 9 first-stage booster performed a controlled descent and landed on the autonomous spaceport drone ship stationed in the Atlantic Ocean. This mission marked the tenth successful launch of a GPS III satellite, a program initiated to replace aging GPS II-era hardware with more resilient and accurate technology.
According to specifications provided by the U.S. Space Force Space Systems Command (SSC), the GPS III satellites provide significant upgrades over previous generations. These include three times greater accuracy and up to eight times improved anti-jamming capabilities. The SV10 satellite also broadcasts the L1C civil signal, which is designed to be compatible with other international global navigation satellite systems, such as the European Union’s Galileo. This interoperability ensures more reliable positioning data for both military and commercial users globally.
Colonel Heather Bogstie, senior materiel leader for SSC’s Positioning, Navigation, and Timing Delta, confirmed the successful acquisition of the satellite’s signal shortly after deployment. Bogstie stated that the completion of the GPS III block is a milestone for national security, providing the warfighter with enhanced M-code signals that are more difficult to disrupt or spoof. The GPS III program has been a cornerstone of the Department of the Air Force’s efforts to modernize space-based infrastructure.
The launch was part of the National Security Space Launch (NSSL) Phase 2 contract, a multi-billion dollar procurement program shared between SpaceX and United Launch Alliance. While the specific value of the SV10 launch was not disclosed on the day of the event, previous GPS III launch contracts awarded to SpaceX have been valued between 80 million and 90 million dollars. With the GPS III series now fully deployed, the Space Force is shifting its focus to the GPS III Follow-on (GPS IIIF) program, which will introduce additional features such as a regional military protection capability and a laser retroreflector array. Lockheed Martin is currently under contract to produce up to 22 GPS IIIF satellites, with the first scheduled for launch in the coming years.