Test Confirms Timing Resilience of LEO Time Service Underground, Indoors

This report from Inside GNSS describes a PNT technology evaluation conducted by GMV, a Spanish multinational corporation. GMV tested an Orolia SecureSync time and frequency reference system paired with Satellite Time and Location (STL) from Satelles. This indoor, underground test confirmed the resilience of STL, which is broadcast from low-Earth-orbit satellites. Link