Later this month, Xona Space Systems will launch the first satellite of its Pulsar constellation aboard SpaceX’s Transporter 14 mission. This marks a significant push to advance next-generation satellite navigation (satnav) technology and address long-standing limitations of the US Global Positioning System. While architecturally similar to GPS, Pulsar satellites will reside in low Earth orbit, beaming signals nearly 100 times stronger and providing greater resistance to jamming or spoofing attempts. The ambition is clear: achieve lane-precise navigation, real-time data responsiveness, and enhanced indoor coverage, leveraging low orbital altitudes and advancing receiver technology.
For three decades, GPS satellites in medium Earth orbit have enabled everything from ride-hailing apps and power grid synchronization to precision-guided military munitions. Yet, their weak ground-level signals are now a critical vulnerability. Recent years have exposed GPS’s fragility as both state and non-state actors exploit these weaknesses—the Ukraine conflict has especially highlighted rampant jamming and spoofing against drones and weapon systems. This vulnerability is not isolated to conflict zones; incidents in US airports have shown commercial life is also at risk, with relatively cheap jamming devices widely available online.
Xona Space Systems, founded in 2019 with an eye on autonomous vehicle navigation, is joined by others in the race to secure Positioning, Navigation, and Timing (PNT) infrastructure. Companies including Anello Photonics and Advanced Navigation are bringing terrestrial inertial guidance solutions—historically reserved for military use—into mainstream commercial applications, while Safran and others pursue data distribution via optical-fiber networks. Meanwhile, new players like TrustPoint and proposals to repurpose the Starlink constellation signal a surge of innovation in the satellite PNT space.
Xona’s strategy involves harmonizing Pulsar’s signal with existing GPS standards so current receivers can easily integrate the new services. The company forecasts that partial constellation deployment—just 16 satellites—could enhance resilience and reliability well before the target date for global coverage in 2030. Their inaugural Pulsar-0 test aims to validate resistance to jamming and spoofing, following up on previous demonstration missions. Ultimately, the transition to lower, more numerous satellites, modern electronics, and hybrid navigation systems reflects an urgent technological response to the growing strategic importance—and vulnerability—of global positioning infrastructure.
