METHOD OF DETERMINING COORDINATES OF NOISY OBJECTS USING VERTICALLY DEVELOPED ON-BOARD ANTENNAS OF HYDROACOUSTIC SYSTEMS Russian patent published in 2024 - IPC G01S3/80 

FIELD: hydroacoustic equipment.

SUBSTANCE: invention relates to hydroacoustic equipment and can be used to solve problems of passive determination of coordinates of noisy objects, namely distances and depths during propagation of hydroacoustic signals at sea. Result is achieved by generating an exponential function for each CM from arrays of delays and intensities of the CM of the received signal, formation of the combined CCF of the received signal for each tier of the VFPF relative to the two angles with the maximum signal-to-noise ratio (AA1 and AA2) by summing the values of the functions of all CMs for each point in time, in accordance with the quantization step, calculating, for each point of the area of the possible location of the target, the SJR value in the three frequency ranges (FR), calculating, for each point of the area of possible location of the target, the energy structure of the signal and intensities of each calculated CM for all possible combinations of pairs of VFPF tiers in three FRs for a single target noise, selection of CM intensities, calculated for pairs of tiers, when first in this pair is AA1 or AA2, and FR corresponds to the optimal FR of the received signal, normalizing the selected intensities using the SJR values of the received signal in the optimal FR and the corresponding tiers and the calculated SJR values for the corresponding point, calculated in the FR corresponding to the optimal FR of the received signal, and corresponding tiers, formation of exponential functions for all calculated CM, formation for each point of area of calculated CCF by summation of values of functions of all calculated CM for corresponding pairs of tiers for this point, zeroing the CCF values in the vicinity of those points in time, in which the CM intensities do not exceed the threshold value for the CM detection in the CCF of the VFPF SLS path, calculating, for each point of the region, the total correlation coefficient between the calculated CCFs generated for it and combined CCFs of the received signal and determining the coordinates of the noisy in the sea object by selecting the coordinates of that point of its possible location in the "distance-depth" space, for which the highest value of the total correlation coefficient is obtained.

EFFECT: high accuracy of determining coordinates of noisy objects.

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