Royal Navy trials quantum navigation systems with University of Sussex

The UK Royal Navy‘s Disruptive Capabilities and Technologies Office (DCTO) recently teamed up with scientists from the University of Sussex to test new navigation sensors developed to reduce reliance on GPS navigation.

The ultra-sensitive quantum sensors measure tiny variations in the Earth’s magnetic field, offering a new way to pinpoint locations when satellite signals are jammed or unavailable.

“We are excited and pleased to have supported this first sea trial with the University of Sussex and its quantum magnetometer technology,” said Commander Matt Steele, from DCTO. “We are also grateful to our colleagues in the Hydrographic Exploitation Group for providing one of its vessels and crew to provide a test platform.

“To ensure it can resiliently operate in GNSS-denied and degraded environments, the Royal Navy continues to explore and accelerate the development of alternative means of navigation, such as this magnetic sensor, while positioning itself as a pioneer ‘quantum-enhanced navy’.”

“GPS or GNSS signals are highly vulnerable to disruption: they can be jammed or spoofed, and they fail entirely underground, underwater, or in heavily obstructed environments,” said Tom Coussens, Research Fellow in Quantum Science and Technology at the University of Sussex. “This vulnerability has serious economic and operational consequences. While alternative systems such as inertial navigation and visual recognition exist, none simultaneously meet all critical requirements: long-term positional accuracy, weather independence, and resistance to jamming.”

In the trials, a team from the university worked with the Royal Navy’s Hydrographic Exploitation Group who survey waters, recording details of depth, seabed objects and composition. The university used its Optically Pumped Magnetometers in open waters, with the trials taking place from His Majesty’s Naval Base Portsmouth.

In addition to navigation, they also successfully mapped surrounding magnetic signatures, pointing to new methods for detecting vessels, undersea features, and potential hazards.