Xona Space Systems is building a competing navigation constellation to challenge GPS's dominance. The company plans to deploy 258 satellites into low-Earth orbit, creating a global positioning system independent of U.S. government control.

GPS satellites operate at roughly 12,500 miles altitude. Xona's satellites will fly much lower, between 600 and 800 miles up. This proximity to Earth enables faster signal processing and stronger ground-based reception, reducing latency and improving accuracy in urban canyons and other challenging environments where GPS signals weaken.

The timing reflects growing frustration with GPS limitations. Commercial operators, militaries, and critical infrastructure providers increasingly need positioning data that doesn't rely on a single government system. GPS works well globally, but its signals degrade in dense cities, tunnels, and indoors. Low-Earth orbit constellations can transmit stronger signals and achieve meter-level accuracy where GPS manages only 5-10 meters.

Several companies now pursue this market. Inmarsat, Iridium, and others operate low-Earth orbit networks, though primarily for communications rather than precise navigation. Xona's singular focus on navigation creates direct competition with established GPS infrastructure and newer alternatives like Europe's Galileo system and China's BeiDou.

The lower orbital altitude carries trade-offs. Satellites degrade faster in denser atmosphere, requiring more frequent replacements. Ground station networks must track more satellites simultaneously since fewer cover any given point at once. Launch costs remain substantial despite recent improvements from SpaceX and other providers.

Xona's 258-satellite plan requires significant funding and regulatory approval. The company must obtain spectrum licenses, secure launch capacity, and manage orbital debris concerns. Global navigation constellations represent multi-billion dollar undertakings. Success depends on attracting customers willing to adopt new ground receivers and infrastructure.

The resurgence of low