METHOD FOR PROCESSING NOISE SIGNAL OF AN OBJECT DETECTED BY HYDROACOUSTIC SPACE DIVERSITY SYSTEMS Russian patent published in 2023 - IPC G01S3/80 

FIELD: hydroacoustics.

SUBSTANCE: invention relates to the field of hydroacoustics and is intended for processing the noise signal of an object for the purpose of its subsequent classification in the case when the object signal is detected by different hydroacoustic systems located on a common carrier, the antennas of which are separated in space. The method is based on receiving an acoustic signal of an object separately, but simultaneously by two hydroacoustic systems located on a common carrier, and analyzing the cross-correlation function of the signals of these systems to make a decision about observing one object in two systems. When implementing the method, based on the analysis of the cross-correlation function, the time delay between the moments of signal arrival is determined, one signal is shifted in time relative to the other, and the total signal of the object is determined. This allows for further classification based on the features of the spectral composition of the signal to use a wider frequency band than the frequency band of each of the two systems separately.

EFFECT: increasing the efficiency of object classification by obtaining an object signal that has the combined frequency properties of the signals detected in the two systems.

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