Xona's Pulsar Test: Six Satellites to Trial a Commercial GPS Alternative
A SpaceX rocket is set to launch six satellites for Xona Space Systems later in October 2026. The six are the first spacecraft for Pulsar, Xona's planned 258-satellite network for commercial positioning, navigation and timing, the system that provides location and precise time TechCrunch.
Four of the six are similar to a prototype Xona flew last year and use a satellite platform, the main body and core systems, from Aerospace Labs. The other two were built entirely by Xona at its headquarters in Burlingame, California. Flying both types together allows a direct comparison of supplier-built and in-house spacecraft.
Pulsar is designed for centimeter-level accuracy, locating a receiver within a few centimeters, compared with meter-level accuracy from GPS. Its signals are designed to work with existing GPS receivers after a relatively simple software change. That would let makers of chips and receivers build terminals that track both GPS and Pulsar without replacing the hardware, which lowers integration cost.
The timing design differs from older systems. Legacy navigation satellites carry expensive atomic clocks, highly stable clocks that anchor the distance measurement. Xona's design leaves those clocks off the satellite and instead relies on flying close to Earth in low Earth orbit and staying in contact with ground stations. It shifts timing work from the spacecraft to ground infrastructure and orbit geometry.
Once in orbit, the six satellites will pass over mid-latitudes about eight times per day. That is not continuous coverage. It gives regular windows to collect signals, test receivers and measure errors in the regions where early customers are concentrated, and Xona can then start beta testing with real customers.
Xona was founded in 2019 by five engineers who met in Stanford University's aerospace engineering graduate program. It has raised just over $300 million since then, including $20 million from the U.S. Space Force. That total includes $170 million in Series C funding to scale its private GPS alternative Payload.
On regulation, Xona has cleared its final hurdle and has approval to broadcast navigation signals from its full constellation Payload. With that approval, it aims to offer full Pulsar coverage in the U.S., Europe, Japan and South Korea by 2028. It plans to ramp up production after the October 2026 launch of six satellites AeroTime.
The broader context here is scale and execution rather than physics. Moving from six test spacecraft to a 258-satellite operational network needs a very different production rate, launch schedule and ground network than prototype work. Flying in-house builds beside Aerospace Labs hardware gives Xona a practical way to measure which route handles that ramp better.
Looking at what this means for users, the near-term value is testing, not service. Beta passes will let customers measure real accuracy, availability in limited windows, and how software-updated GPS receivers track low-orbit signals. If those numbers hold, the longer arc is more robust positioning, with a commercial high-accuracy layer that works with hardware already in the field.
