Low-Earth Orbit Navigation Satellites Challenge GPS

New navigation satellites in low-Earth orbit could provide 100 times stronger signal strength compared to GPS and other global navigation satellite systems operating from higher orbital altitudes—enabling greater location accuracy within dense cities, under thick foliage, and even inside buildings. Such signals would also likely prove more resilient to interference at a time when commercial flights, maritime shipping, and even various smartphone apps face increasingly widespread disruption from GPS jamming. That vision may start to take shape when the first six production satellites of California-based Xona Space Systems are scheduled to launch in October 2026, with early service starting in 2027.

Once the full constellation of 258 Pulsar satellites has been launched in the following years, Xona claims that customers will be able to accurately pinpoint their locations anywhere on Earth to within several centimeters. "That added power means that we can get into that indoor environment that GPS can't get to today," Adrien Perkins, co-founder and VP of engineering at Xona Space Systems, told Ars. "Our higher power allows you to get into those jamming environments a lot further than you would with GPS by itself." Why this matters: The emergence of low-Earth orbit navigation satellites has significant implications for various industries that rely on precise location data.

With stronger signals and increased resilience to interference, these satellites could enable more accurate navigation in areas where GPS signals are weak or disrupted, such as dense cities, forests, or buildings. This technology could benefit sectors like aviation, maritime, logistics, and smartphone applications, which are increasingly vulnerable to GPS jamming. As Xona's constellation takes shape, developers and businesses will need to assess the potential benefits and challenges of integrating these new signals into their systems.

Open questions remain about the scalability and sustainability of low-Earth orbit satellite constellations, as well as the potential for regulatory hurdles or competition from other players in the market.