NATIONAL HARBOR, Maryland—Anti-drone technology has been high on the shopping list of public safety and military organizations at least since a drunken federal employee crashed a drone onto the White House lawn. Two companies on hand at the Navy League Sea Air Space Exposition here this week had two slightly different approaches to the problem. One anti-drone device has already been deployed in the hands of federal law enforcement and the military, and a "street legal" version may be coming soon.
The drone "killer" getting the most attention at Sea Air Space was the DroneDefender, a system developed by researchers at the nonprofit research and development organization Battelle. DroneDefender is a two-pronged drone jammer—it can disrupt command-and-control signals from a remote operator or disrupt automatic GPS or GLONASS guidance, depending on which of the devices' two triggers is pulled.
Powered by a small backpack, DroneDefender looks like some futuristic over-under, radio-frequency shotgun-grenade launcher. Targeted through a simple optical sight, the device has a range of about 400 meters. Battelle calls it a "directed RF energy weapon"—it sends out a jamming signal in the Industrial, Scientific and Medical (ISM) bands or global positioning bands in a 30-degree cone around the point of aim.