Sierra Space successfully demonstrates resilient GPS tech for U.S. Space Force mission

GPS plays a vital role in both civilian and military applications, from mobile navigation apps to national defence operations. As threats to existing GPS infrastructure grow, the U.S. Space Force’s Quick Start programme aims to integrate smaller, rapidly deployable satellites into the GPS framework.

Sierra Space’s R-GPS technology generated all required GPS navigation signals, including P(Y), M-code, and C/A signals at L1 and L2 frequencies. This capability enhances signal security and compatibility with existing global positioning systems.

“This successful demonstration is a testament to the innovative capabilities of Sierra Space and General Dynamics,” said Erik Daehler, Vice President of Sierra Space Defense. “This milestone not only underscores our commitment to advancing GPS technology, but positions Sierra Space to be optioned for Phase One, the next step of the U.S. Space Force’s Quick Start program.”

The company was awarded the R-GPS contract by Space Systems Command in September 2024 to develop affordable, smaller satellite design concepts. Following a successful internal Systems Requirements Review, this latest demonstration further confirms the programme’s technical progress.

Amy Johnson, Vice President at General Dynamics Mission Systems, highlighted the need for rapid innovation in GPS infrastructure. “Our country needs GPS satellites with more capability and resiliency at a faster rate, and we are proud to bring our mature, mission-ready and proven portfolio of capabilities to Sierra Space to help the U.S. Space Force achieve these objectives quickly,” she said.

The demonstration evaluated hardware, firmware and software performance, showing that the R-GPS system can meet mission demands for signal quality and reliability. It represents a significant step towards strengthening the nation’s GPS resilience in an increasingly contested space environment.