Acoustic imaging based on a mathematical model

A technique for creating an acoustic image based on its mathematical model is proposed. The technique can be used when conventional methods are inapplicable because of the small aperture dimensions relative to the wavelength, the presence of fluctuations, or nonstationary conditions. The essence of the method and its features are illustrated by examples. The method is used to create an image of the angular distribution of scattered signals and of the angular spectrum of signals at the output of an array in a full-scale acoustic experiment.