Closing the Detection Gap

DroSonic is a passive acoustic drone detection system built by Koraiio LLC in Denver, Colorado. It uses microphones and edge AI to detect, classify, and locate drones by the sound of their propellers, without emitting any radio or radar signal.

Every drone's spinning propellers produce an acoustic signature that cannot be switched off. DroSonic sensor nodes listen for that sound, classify it with compressed neural networks running locally on each node, and fuse GCC-PHAT time-difference-of-arrival measurements across a distributed network of nodes to locate the drone.

Yes. Because DroSonic listens for propeller sound rather than a radio link, it is designed to detect drones that emit no RF at all, including fiber-optic guided drones and fully autonomous pre-programmed drones that RF detectors and jammers cannot see.

No. Detection is passive, so there are no emissions and no spectrum license is required. Classification runs on edge hardware inside each node with no cloud dependency, and the node network degrades gracefully if nodes lose connectivity.

Yes. In September 2026 a DroSonic prototype was tested against live drones at DIRT Days 26.04, a field exercise supported by the Civil-Military Innovation Institute (CMI2) with U.S. Central Command and U.S. Army DEVCOM. DroSonic is now working toward field demonstrations with operational partners. Read about the field test.

DroSonic targets military bases and forward operating base perimeters, critical infrastructure such as power plants, airports, water treatment, and fuel depots, and border and perimeter security, especially in electronically contested or GPS-denied environments.

Yes. Koraiio LLC, the company behind DroSonic, is registered for U.S. federal contracting: SAM.gov active, CAGE code 20L04, UEI JHAPZ8QKD8K9, primary NAICS 541715. See registration details.