
Iridium Satellite Time & Location
Following its acquisition of Satelles, Iridium now offers Iridium Satellite Time and Location® (Iridium STL®)—a Positioning, Navigation, and Timing (PNT) service that improves the resiliency and survivability of critical infrastructure when Global Positioning System (GPS) or Global Navigation Satellite System (GNSS) signals are absent or disrupted.
Iridium STL was built to address vulnerabilities and limitations faced by GPS and GNSS—with a time and location capability that secures PNT-dependent applications against disruption and manipulation.
Transmitted from Iridium’s Low-Earth Orbit (LEO) network, the Iridium STL signal is about 1,000 times stronger than GPS or GNSS, allowing it to penetrate buildings and other hard-to-reach areas with only a receiver and small antenna.
Today, Iridium STL is the only LEO-based PNT solution commercially available worldwide.
Key Markets

Used as a primary source or an essential backup for dependable time and location information, Iridium STL is trusted for PNT-dependent applications by numerous enterprises, including:
- Wireless carriers
- Data centers
- Financial services institutions
- Transportation companies
- Manufacturers
Get In Touch
To start taking advantage of Iridium STL, to explore partnership opportunities, or to receive technical support, complete this form.
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