Drones provide a new way of detecting submerged mines

Drones are now capable of providing a new way to detect buried and submerged mines, U.S. Navy scientists unveiled during a recent demonstration.

Oelrich, a scientist at Naval Surface Warfare Center (NSWC) Carderock’s Combatant Craft Division, and Stephanson, president and chief executive officer of Broadband Discovery Systems (BDS), stared at an Android tablet showing search data from an unmanned aerial drone they had just flown.

The device’s screen glowed as a green fluorescent map appeared, splashed with red clusters of varying sizes and shapes.

“See that large cluster?” asked Stephanson. “That’s the dummy mine we buried. The smaller blotches near it are construction rebar we found nearby. The drone detected and localized these items quickly and accurately, which would be extremely valuable in a real combat scenario.”

Oelrich and Stephanson were testing the new Mine Warfare Rapid Assessment Capability (MIW RAC) system.

Sponsored by the Office of Naval Research’s (ONR) TechSolutions program, MIW RAC consists of a one-pound quadcopter outfitted with an ultra-sensitive magnetometer sensor system to detect mines and provide real-time search data to a handheld Android device.

“This technology will help sailors and marines who are approaching a beachfront to rapidly clear, or at least determine the location of, mines or other hazards that are in their way,” said ONR Command Master Chief Matt Matteson. “It could potentially save a lot of lives.”

MIW RAC is a portable, remote-controlled system that can detect buried or underwater mines during amphibious beach landings. It’s designed to help explosive ordnance disposal teams quickly find mines and dangerous metal obstacles within coastal surf zones and very-shallow-water zones. MIW RAC would provide a new, real-time aerial complement to existing underwater mine-detection capabilities.

While the quadcopter and tablet device are available commercially, the heart of MIW RAC is its proprietary magnetometer sensor suite – which has an extensive detection range and uses complex algorithms to differentiate between various types of objects.

MIW RAC originated in 2015, when the Navy Expeditionary Combat Command (NECC) sent a request to ONR’s TechSolutions program for a portable system that could detect potential hazards in surf zones, be easy for warfighters to use, and fit diverse platforms.

Later this year, TechSolutions will deliver prototype MIW RACs to NECC’s Explosive Ordnance Disposal Group for further testing and evaluation. Oelrich and her team hope to see the system issued throughout the fleet next year.

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