By placing a dish-shaped sound reflection lens below the surface of the sea, and collecting sound signals through an array of microphones, researchers were able to create images of underwater targets.
再以放置於海面下的弧形聲波反射鏡，收集受到擾動的雜訊，並利用聲波陣列接收器接收訊號，即可顯現出目標物影像。