HYDROACOUSTIC RECEIVING-RADIATING TRACK Russian patent published in 2012 - IPC G01S7/52 

FIELD: instrument making.

SUBSTANCE: hydroacoustic receiving-radiating track is proposed, comprising a control unit 1 connected to the second inlets of an indication unit 2 and the main amplifier 3, and also with a synthesiser 4, outlets of which are connected to the second inlets n of mixers 5-6, and also through n channels each comprising serially connected a power amplifier 7-8 and a switch 9-10, bidirectional inlets of which are connected to n sections of an acoustic antenna 11; the second outlets of switches 9-10 are connected via preliminary amplifiers 12-13 with the first inlets of mixers 5-6, outlets of which via filters 14-15 and phase changers 16-17 are connected with n inlets of a summator 18, the outlet of which is connected via the main amplifier 3 and an analog-digital converter 19 with the first inlet of the indication unit 2, and also with an extremator 20, outlets of which are connected with control inlets of n phase changers 16-17.

EFFECT: expanded directivity pattern of an antenna without deterioration of location characteristics.