Method and probing device by wave propagation

A method of sample wave propagation, wherein an incident wave is transmitted in a medium (1) comprises diffusers (2) able to reflect the waves, and then picks up signals representative of a reflected wave reverberated by the environment from the incident wave, the sensed signals being the sum of a single scattering component and a multicast component. Treating the signals picked up by separating multiple scattering component of the single scattering component.