Bio-inspired defenses may help mitigate the threat of IED carrying drones in combat. The latest proof comes out of Australia, where researchers have mapped the visual systems of hovering insects as a means of detecting the acoustic signatures of drones up to 2.5 miles away. The hover fly, which can hover above plants to collect nectar exhibits superior visual and tracking skills. Dark lit regions are visually very noisy, but insects such as the hover fly can process and capture visual signals with remarkable effectiveness. Mapping this same processing technique to acoustic detection resulted in a substantial increase in detection capabilities, including in noisy environments. “Unauthorised drones pose distinctive threats to airports, individuals, and military bases,” says Finn. “It is therefore becoming ever-more critical for us to be able to detect specific locations of drones at long distances, using techniques that can pick up even the weakest signals. Our trials using the hoverfly-based algorithms show we can now do this.”
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