Nearly every form of modern transportation now relies on the free GPS (GNSS) services as provided by major governments, and as we enter the age of autonomy this reliance is getting stronger. However many navigation services are based on an architecture that was designed nearly a half-century ago, and are failing to meet the requirements needed for modern systems to operate safely when it comes to accuracy, security, and resilience. Xona is leveraging the advacements of the new space era to develop Pulsar: a constellation of small but powerful navigation satellites in low Earth orbit, more than 20x closer to Earth than GPS. Pulsar will provide secure navigation services that are more than 100x stronger and 10x more accurate than GPS, enabling reliable sub-10cm level positioning anywhere on Earth. Xona’s patent-pending distributed atomic-clock architecture is at the core of Pulsar which allows high-performance services to be provided from small satellites without the need for large atomic clocks onboard.