About one method for classification of hydroacoustic radiation sources at the output of adaptive spatial processing

The article describes the methodology and presents the results of marine experiments on the construction and analysis of direction-finding reliefs and recorded trajectories from the standpoint of classification of observed sources(surface and underwater objects) in the noise direction-finding mode as applied to autumn hydroacoustic conditions in the coastal area wedge. It is shown that in the noise direction finding mode, as an additional to the known classification features for separating surface and underwater objects, the modulation of the trajectory bearing, which occurs when signals are propagated with reflection from the boundaries — the surface and the bottom, can be used. This modulation is effectively detected after limiting the power of strong signals.