At night in Ukraine they use microphone arrays to track the drones: https://www.twz.com/land/thousands-of-networked-microphones-are-tracking-drones-in-ukraine

At night in Ukraine they use microphone arrays to track the drones: https://www.twz.com/land/thousands-of-networked-microphones-are-tracking-drones-in-ukraine https://www.twz.com/land/thousands-of-networked-microphones-...