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Listening for the right radio signals could be an effective way to track small drones
Because the radio spectrum is used for so ... a unique fingerprint of each type of drone. In the best-case scenario, authorities can use the radio frequency signals to determine the drone ...
The Economist6d
Fighting the war in Ukraine on the electromagnetic spectrum
F OR SOLDIERS at the front, electromagnetic defences are as vital as air: invisible when present, and disastrous when not. In ...
The Economist7d
Fine-tuned acoustic waves can knock drones out of the sky
Might it also be possible, then, to use acoustic waves to disrupt the electromechanical sensors that drones require to ... match the material’s resonant frequency. Prandtl’s system, says ...