Companies like Xona Space Systems are developing constellations to challenge traditional GPS, aiming to provide higher signal accuracy and resilience against jamming for military and commercial users alike.
Xona Space Systems and the LEO PNT Shift
The global satellite navigation market, currently dominated by constellations in medium-Earth orbit (MEO) like the United States’ Global Positioning System (GPS), is facing a new wave of competition. According to Ars Technica, startups like Xona Space Systems are leveraging the lower manufacturing and launch costs of the current era to deploy constellations in low-Earth orbit (LEO). While replicating GPS performance requires roughly 10 times more satellites in LEO, the proximity of these spacecraft—approximately 25 times closer than traditional GNSS satellites—promises significantly stronger signals and improved indoor reception.
Xona is currently scaling its internal production capabilities to manufacture its planned 258 Pulsar satellites. The company recently hired Tim Graham, a former SpaceX engineering manager who worked on the Raptor engines for the Starship rocket, to oversee hardware, software, and propulsion. If you look at the historical impact of major technological developments, GPS is up there as world-changing,
Graham noted in an interview with the outlet. Bringing a more modern design for a modern technology GPS system to the world is a pretty exciting mission.
The Strategic Value of LEO Constellations
The push for LEO technology is driven by more than just commercial opportunity; it has become a central pillar of national security. Analysis from CSIS highlights that the ongoing conflict in Ukraine has demonstrated the critical role of commercial LEO alternatives, such as SpaceX’s Starlink, in supplementing terrestrial communications during electronic warfare and signal jamming.
The economic stakes are substantial. The global space economy reached $613 billion in 2024, with the commercial segment accounting for $480 billion, or 78 percent of that total.
Investment Opportunities and Industry Applications
For investors, the transition to LEO PNT represents a significant, albeit challenging, market. EY reports that the LEO PNT category value is expected to grow twenty-fold, rising from $1.5 billion in 2024 to $35 billion by 2038. These satellites offer centimeter-accurate positioning, which is critical for autonomous technologies, real-time intelligence analysis, and digital twin environments.
The barrier to entry remains high, however.
Surveillance and Environmental Monitoring
Beyond navigation, LEO constellations are transforming Earth observation. TS2 reports that there were over 1,100 active Earth-observation satellites in orbit by 2025, with more than half under private ownership. These eyes in the sky
provide persistent surveillance, with some advanced systems capable of sub-meter optical resolution.
Environmental monitoring is also benefiting from specialized LEO configurations. The CYGNSS constellation, launched in 2016, utilized a technique called differential drag to manage the altitude and speed of its eight satellites without the need for traditional active propulsion systems, as detailed by Nature. By manipulating the pitch of the spacecraft to maximize or minimize atmospheric drag, operators could adjust the constellation’s geometry to improve temporal and spatial sampling of the Earth’s surface.
As the sector moves toward full-scale deployment, the industry faces a delicate balance: private companies are innovating at a rapid pace, while government agencies are working to ensure these dual-use technologies remain secure and resilient. The window for early investment is closing as commercial alignments solidify, leaving legacy aerospace firms to decide whether to accelerate their own LEO strategies or risk falling behind the new wave of agile space startups.
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