Thank you very much, Yaron, for sharing such an interesting article.
It's fascinating to see acoustic sensor networks playing an important role again. They are now being widely used in Ukraine to detect incoming Shahed drones.
This technology has surprisingly deep roots. During World War II, before radar became widespread, the Soviet Union extensively used acoustic aircraft detectors to detect approaching German aircraft. Skilled operators could often estimate an aircraft's direction, engine type, approximate altitude, and even whether they were hearing a single aircraft or an entire formation simply from its sound signature.
The concept was simple: large acoustic horns collected engine noise, operators listened through headphones, determined the aircraft's direction, and relayed the information to searchlight and anti-aircraft units. It required considerable training, and weather conditions such as wind, rain, or temperature inversions could significantly affect performance.
It’s a fascinating field that has a lot of history around the two World Wars, primarily in Europe. It made more sense for European armies to use acoustic detection in 1920s-1930s. It wasn’t as common in the US since they had a lot more land to cover, so they landed on developing the radar much earlier. However, with AI + affordable listening devices, the technology is coming back in a slightly different format these days.
Thank you very much, Yaron, for sharing such an interesting article.
It's fascinating to see acoustic sensor networks playing an important role again. They are now being widely used in Ukraine to detect incoming Shahed drones.
This technology has surprisingly deep roots. During World War II, before radar became widespread, the Soviet Union extensively used acoustic aircraft detectors to detect approaching German aircraft. Skilled operators could often estimate an aircraft's direction, engine type, approximate altitude, and even whether they were hearing a single aircraft or an entire formation simply from its sound signature.
The concept was simple: large acoustic horns collected engine noise, operators listened through headphones, determined the aircraft's direction, and relayed the information to searchlight and anti-aircraft units. It required considerable training, and weather conditions such as wind, rain, or temperature inversions could significantly affect performance.
Thank you , Valeriy!
It’s a fascinating field that has a lot of history around the two World Wars, primarily in Europe. It made more sense for European armies to use acoustic detection in 1920s-1930s. It wasn’t as common in the US since they had a lot more land to cover, so they landed on developing the radar much earlier. However, with AI + affordable listening devices, the technology is coming back in a slightly different format these days.