PROCESSING OF HYDROACOUSTIC SIGNAL FROM NOISE-EMITTING OBJECT Russian patent published in 2015 - IPC G01S15/00 

FIELD: physics.

SUBSTANCE: proposed method comprises reception of noise-emission signal, determination of noise signal and interference spectrum, accumulation of results and their comparison. Noise-radiation signal is received by signal antenna output to isolate the spectrum actual section. Then, performed are isolation of spectrum virtual section, reiteration of spectrum actual section isolation and reiteration of spectrum virtual section for N serial sets. Sid actual section and virtual sections are summed for N sets. Sum of actual section is squared as well as that of virtual sections. Energy spectrum of sum signal is defined. Simultaneously, the same initial data are used to define the energy spectrum of said difference as the sum of squares of N sets of the difference of actual sections and the sum of squares of N seta of the difference of virtual sections. Decision on the object noise-ration signal availability is make in case the sum energy spectrum exceeds that of the difference energy spectrum.

EFFECT: automatic detection of hydroacoustic signals.

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