CYLINDRICAL RECEIVING ANTENNA OF CIRCULAR SCANNING HYDROACOUSTIC STATION Russian patent published in 2015 - IPC G01S7/52 H01Q9/46 

FIELD: radio engineering, communication.

SUBSTANCE: cylindrical receiving antenna of a circular scanning hydroacoustic station comprises receiving elements mounted on an extensible structure configured to unfold the antenna from a transportation position to a working position and back, arranged on a circle to form a cylindrical receiving array. The antenna structure in the working position is sound transparent; elements of the cylindrical receiving array are arranged on one circle and their number is determined by the expression N_opt=[1+N₀d₀/d_opt], where N_opt is the number of elements of the cylindrical receiving array; N₀ is the number of elements spread on the circle of the antenna by distance d₀=c/2f_max; where c is the speed of sound in water; f_max is the upper operating frequency; d_opt is the distance calculated using an iteration procedure, when each iteration step includes calculating the beam pattern of the compensated circle at frequency f_max for N₀ elements.

EFFECT: simple antenna design and reduced weight and size thereof, significantly reducing the number of antenna receivers while maintaining the concentration factor thereof.

11 dwg