Navigation satellites in low-Earth orbit are poised to deliver location accuracy that GPS cannot match, especially in dense urban environments and indoors. Xona Space Systems, a California startup, aims to launch its first six production satellites in October 2026, with early service beginning in 2027. The full constellation of 258 Pulsar satellites promises to pinpoint locations within several centimeters anywhere on Earth.

What You Need to Know

GPS signals from medium-Earth orbit are weak and easily jammed or blocked by buildings and foliage. Xona's low-Earth orbit satellites transmit signals roughly 100 times stronger, enabling reception indoors and in challenging environments. The system also offers resilience against growing GPS jamming affecting flights, shipping and smartphones. Full deployment will take several years after the initial 2026 launch.

The Pulsar Constellation Plan

Xona Space Systems is building a network of 258 small satellites orbiting at roughly 500 kilometers altitude. That low-Earth orbit placement reduces signal travel distance dramatically compared to the 20,000-kilometer orbit of traditional GPS satellites. Adrien Perkins, co-founder and VP of engineering at Xona, said the added power allows signals to reach indoor environments GPS cannot access today.

The company plans an incremental rollout. The first six production satellites launch in October 2026, followed by early commercial service in 2027. Xona expects the full constellation to be operational in the early 2030s.

Why This Matters

GPS jamming has become a widespread problem for commercial aviation, maritime shipping and everyday smartphone use. Tests have shown that Russian satellites can disrupt GPS on a continental scale. A stronger, jam-resistant navigation alternative changes the risk calculus for critical infrastructure. For consumers, the technology means reliable location indoors, in tunnels and under dense tree cover, unlocking new applications for augmented reality, logistics and emergency services. For industries like autonomous vehicles, centimeter-level accuracy from LEO could replace reliance on ground-based correction systems.

  • Indoor positioning: Stronger LEO signals penetrate building materials, enabling navigation inside malls, airports and warehouses.
  • Jamming resilience: Higher power output lets receivers filter out interference more effectively than with GPS.
  • Centimeter accuracy: The full Pulsar constellation aims to deliver precise positioning without extra ground equipment.

Technical Edge Over GPS

Every GPS satellite transmits roughly 50 watts of power, but that signal weakens over the 20,000-kilometer journey to Earth. Xona's satellites operate at lower altitude with equivalent power, resulting in a much stronger signal at ground level. That power advantage also improves performance under heavy foliage and in urban canyons where GPS frequently fails.

The system uses a different frequency band, which further reduces interference risks. Xona designed the Pulsar satellites to be compatible with existing GPS receivers through software updates, making adoption easier for device makers.

Move over, GPS: low-Earth orbit navigation is making a comeback, and Xona Space Systems intends to lead it.