"Data from a network of 9,500 Phone-on-pole Sensors is then relayed to a central command post, where it is fused together to give a complete picture of what is happening in the airspace across the whole of Ukraine"

https://theconversation.com/chicken-wire-ai-and-mobile-phones-on-sticks-how-the-drone-war-in-ukraine-is-driving-a-fierce-battle-of-innovation-235503