NextNav announced that it has successfully demonstrated the timing precision and resilience of its terrestrial position, navigation, and timing (PNT) system, TerraPoiNT, in a recent evaluation by the Science & Technology Directorate (S&T) of the Department of Homeland Security (DHS). The trial tested the timing redundancy of the TerraPoiNT system in a number of scenarios, including instances of GPS outages, spoofing, and jamming. According to the company, it validates TerraPoiNT’s capabilities as a terrestrial, GPS-free network capable of powering critical national infrastructure in the event of GPS failure.
During a simulated 72-hour GPS outage, the TerraPoiNT service delivered a timing accuracy better than 50 nanosecond in urban and semi-urban environments, successfully meeting timing requirements for various applications including 5G networks, the synchronization of the power grid, and more. In addition, TerraPoiNT provided precise timing and redundancy utilizing two alternate absolute timing sources: atomic clock (Cesium/Rb) and LEO satellite (Satelles).