METHOD OF MONOPULSE SONAR DETECTION Russian patent published in 2017 - IPC G01S15/00 

FIELD: radars.

SUBSTANCE: invention relates to monopulse sonar systems, namely, to methods of detecting and locating navigation obstacles, locating a vessel by artificial and natural underwater orienting points in both water surface and underwater positions of the vessel. Assigned task is accomplished by that in the proposed technical solution during a target location in vertical and horizontal planes a transceiving antenna consisting of separate electroacoustic transducers forms a sum, a differential and a phase-reference receiving channels, thus forming six linearly independent receiving channels (of the vertical and the horizontal planes), herewith signals of the sum and the differential receiving channels are separately fed to phase multiplier-type detectors, the second inputs of which are fed with a signal of corresponding phase-reference receiving channel, signals of each differential receiving channel before been fed to the phase multiplier-type detectors are first passed through a phase shifter, then output signals of the phase multiplier-type detectors of the sum and the differential receiving channels are divided into an output signal of the phase multiplier-type detector of corresponding phase-reference receiving channel, then the obtained signals form a two-parameter direction-finding characteristic (separately in the horizontal and the vertical planes).

EFFECT: technical result of the disclosed invention is creating a method of a monopulse sonar detection providing for wider field of view in a sonar system and increasing the number of simultaneously resolved objects without increasing the antenna system dimensions.

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