Operators were particularly interested in this technology, especially in urban environments. The complex ROE issues involved were also discussed in some depth. It can distinguish between people, metal, people carrying metal, etc. In the tested environment, its range was several hundred meters. Hovering UAV .
Sensors can vary to fit the mission and environment.
Practical issues remain, but successful development would be valuable. High Power, Low Frequency Sound Systems . These are a class of acoustic NLW that disable humans. Low frequency sound waves can potentially cause intestinal distress and disorientation. Testing this technology involves serious ethical and political considerations.