METHOD OF INCREASING NOISE-IMMUNITY OF ACTIVE HYDROACOUSTIC TARGET DETECTOR Russian patent published in 2016 - IPC F42C13/06 

FIELD: weapons and ammunition.

SUBSTANCE: invention relates to proximity detectors of ammunition targets. Method is based on the principle of separation of signals, which arrived to the receiver inputs from the target or represent noise of various origin, into three groups during their blocking, analysis and processing. Signals that arrived to the receiver input during an initial time interval of the specified radiation period of sounding pulses are classified at the beginning of the above time interval defined by the width of a blank pulse as reflected from a water surface interfering signals and are blocked. Signals that arrived to the receiver input during the remaining part of the said initial time interval, during their analysis are classified as signals from the target. Signals that arrived to the receiver input during the final interval of the specified period of sound pulses radiation, are classified as signals of different types of interference. Duration of the specified period of sound pulses radiation, as well as its initial and final intervals and width of a blank pulse are determined by mathematical equations.

EFFECT: invention makes it possible to increase noise-immunity of a target sensor.

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