Xona Space Systems' experimental Pulsar-0 satellite has revealed the true scope of GPS signal tampering across Europe and the Middle East, showing degradation that surprised even the development team. The satellite orbits 500 kilometers above Earth, testing the company's navigation technology before deploying 300 spacecraft in low Earth orbit later this year.

The data shows GPS signals dropping from 40 decibels to just 10 decibels in heavily impacted regions, affecting an area stretching from France to Pakistan's borders. Unlike traditional GPS satellites that orbit above 12,000 miles, Pulsar-0 operates in low Earth orbit where it discovered that ground-based jammers can disrupt signals received by other satellites.

This interference threatens critical satellite operations including positioning, altitude determination, and collision avoidance systems used by constellations like SpaceX Starlink. The problem extends beyond deliberate jamming to include solar storms, such as the May 2024 Gannon event that disabled precision farming equipment across parts of the US.

Xona's planned constellation aims to transmit PNT signals 100 times stronger than current GPS, potentially reducing jamming effectiveness to just 5% of affected areas. The company raised $170 million in Series C funding and plans to launch six satellites in October, targeting early 2027 for basic service delivery.