Xona Space Systems

Xona Space Systems is building Pulsar, a 258-satellite constellation in low Earth orbit dedicated to positioning, navigation, and timing. The premise is that legacy GPS, which sits in medium Earth orbit, is increasingly easy to jam or spoof and was never designed for centimeter-level accuracy. By flying about 20 times closer to the ground, Pulsar signals arrive with roughly 100 times more power, with much lower latency, and with built-in authentication to resist spoofing. The constellation is designed to be compatible with most existing GNSS receivers through firmware updates, allowing hybrid GPS-plus-Pulsar operation rather than a full hardware swap. The first operational-class satellite, Pulsar-0, launched on SpaceX's Transporter-14 rideshare in 2025, with full constellation rollout targeted by 2027. The company is headquartered in Burlingame, California, and has raised more than $300 million across rounds from Craft Ventures, Mohari Ventures, the US Space Force, and AFRL.