1) If we could accurately detect and track drones, we can disregard the reports, or check with the detection system if there was a related near-detection at the

1) If we could accurately detect and track drones, we can disregard the reports, or check with the detection system if there was a related near-detection at the reported location/line-of-sight 2) While there will be lot's of electrical motors throughout the airport, perhaps the airport and its infrastructure could be designed to support a 10 minute silence (causing delays etc). 3) Focussing on the electromotor driven propellers, the sound can be expected to have twice the frequency of the magnetic field (both the permanent magnet, and the applied electromagnet fields) since the propeller has 2 blades. It should be possible to use this correlation to filter out electromotor noise without blades. (So fan's will still contribute noise, but known fan noise, and electromotor fan noise of authorized equipment could be filtered out, or canceled) 4) A grid of microphones and magnetic field detectors would probably be necessary. 5) The system should probably be combined with other technologies like LIDAR etc