Defense Research Program Developing Tactical Clocks for GPS-Free Navigation

Synchronizing time in modern warfare – often down to billionths of a second – is critical for mission success. The Defense Advanced Projects Research Agency’s (DARPA) Robust Optical Clock Network (ROCkN) program enables precision timekeeping, even in contested and/or GPS-denied environments, creating the opportunity for unprecedented endurance and coordination for warfighters around the world.