COMBINED VECTOR-SCALAR RECEIVER Russian patent published in 2019 - IPC G01N1/16 G01V1/38 

FIELD: hydro acoustics.

SUBSTANCE: invention relates to the field of underwater acoustics, specifically to vector-scalar receivers, and can be used as part of an antenna system placed on a carrier (unmanned motor boat, non-habitable underwater vehicles of various types, gliders, etc.), when conducting hydroacoustic studies, in particular to detect sources of underwater noise in the seas and oceans. Receiver includes four identical cylindrical bodies of acoustically opaque material, which are cross-attached with ends to the central connecting structure, on the axes of each of them, in the holes one after the other, circular bending piezo transducers are mounted, in directions orthogonal with respect to the axis of the cylinder, connected by internal cavities of complex section with the surface of the corresponding body in directions orthogonal with respect to the axis of the body. Opposed bodies are oriented with the axes of the holes equally in each pair. Flexural piezoelectric transducers located in the extreme holes of the opposed bodies are connected in pairs in total. Flexural piezoelectric transducers located in the inner holes of one of the opposite pairs of bodies are connected in total, and in each of the internal openings of the second opposed pair of bodies, two bending piezoelectric transducers with an internal air gap are installed, electrically connected in-phase with each other and connected in total with a similar piezoelectric transducer of the same pair of bodies.

EFFECT: increase in the spatial selectivity of the hydroacoustic antenna in the entire monitored area of space with the provision of increased noise immunity of recording a useful signal under conditions of vibration of the carrier body.

7 cl, 2 dwg