The UK is experimenting with using light waves to tell time, taking early steps beyond traditional clocks for military applications.
Recent trials by the Defence Science and Technology Laboratory (Dstl) focused on atomic clocks that measure time via light waves rather than physical vibrations.
Researchers tested both individual components and complete devices, leaving them unattended for extended periods to simulate real deployment conditions on ships, submarines, and other military settings.
Field testing was chosen to replicate stressors that laboratories cannot reproduce.
“The experience gained from this, and previous trials, has put the UK in a strong position to lead globally and help shape these technologies,” said Commander Matt Steele, Future Technology Officer for the Royal Navy’s Office of the Chief Technical Officer.
Synchronizing Fleets
Atomic clocks do not rely on gears or standard clock parts. Instead, they measure time by tracking the natural, steady behavior of atoms, which makes them far more precise and reliable than ordinary clocks.
While already in use by some militaries, the UK aims to shape the next generation of this technology to provide troops with reliable position, navigation, and timing data even in GPS-denied environments.
Dstl is now working with smaller firms to develop a “wireless transfer system” for atomic clocks that can synchronize naval fleets, satellite networks, and military bases.
“We didn’t have the test and measurement expertise in house or the specialist equipment. Dstl provided both of those which was a great collaboration,” said Simon Merret, director of Far Field Exploits, a small enterprise part of Dstl’s atomic clock experiment.
Further testing is planned for 2027 to tackle military-specific challenges, paving the way for official deployment on military aircraft by 2030.
