Acoustic waveguide invariants in shallow water environments are crucial for understanding how sound propagates underwater, particularly in the context of target detection and parameter estimation.

In their experiments, the researchers used a setup consisting of an acoustic waveguide filled with water. A movable ping-pong ball served as the target object, and cylindrical scatterers created a ...

First, Noiray and his co-workers investigated the fluid mechanics of the spinning wave whistle, and then added three acoustic waveguides to it, which are arranged in a triangular shape along the ...