THE NONLINEAR ACOUSTICS APPLICATION FOR INCREASING SONAR’S EFFICIENCY ON SHELF

It is proposed to ensure the safety of seaboard structures by conducting the water volume’s multi-position monitoring of the coastal protective zone using hydroacoustic means with antennas that employ the effects of nonlinear acoustics, in particular, self-action and interaction of ultrasonic pump waves. An analysis has been made of the use of hydroacoustic active location systems with receiver-emitting antenna devices of an original design, which are placed on the bottom of a shallow water area and used to detect surface and underwater objects, as well as remotely obtain information about hydro conditions at various points in the shelf’s water area. Calculated results of assessing the energy range of an active location hydroacoustic system in the parametric radiation mode and an analysis of the spatial characteristics of the considered antenna device’s model are presented, which confirm the possibility of obtaining the claimed result.