FIELD: acoustics.
SUBSTANCE: area of application: invention relates to the field of hydroacoustics and is intended for dividing objects detected during noise direction finding into low-noise and high-noise classes. Substance: the method is applicable for a hydroacoustic noise direction finding station wherein signal is received and subjected to time-frequency processing with measurement of the power and the signal/noise ratio in at least three frequency ranges. In implementation of the method, an additional frequency range is selected with a maximum signal/noise ratio, and the signal attenuation coefficient is determined for the current hydrological-acoustic conditions. The noise level is then determined in the source based on the attenuation coefficient, the average geometric frequency, and the power of the received signal in the selected frequency range, and the detected object is classified into two classes automatically based on the analysis of the noise level in the source.
EFFECT: achieved possibility of automatic division of the detected objects into low-noise and high-noise classes without pre-determining the distance to the object with simultaneous reduction in the total amount of arithmetic operations in the course of the classification procedure.
1 cl, 1 dwg
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