METHOD OF DETECTING NOISY OBJECTS IN SHALLOW AND DEEP SEA Russian patent published in 2019 - IPC G01S15/04 

FIELD: hydro acoustics.

SUBSTANCE: invention relates to the field of hydroacoustics and can be used in noise control systems. Detection method includes receiving noise signal with combined receiver comprising a sound pressure receiver and a three-component receiver of the vibrational speed vector, frequency-time processing of the received signal, calculating in each frequency channel generated as a result of frequency-time processing of received noise signals, a required set of information parameters for the overall signal plus interference process and for interference separately, rationing of all 64-information parameters, calculated for total signal plus interference process, to corresponding values of information parameters calculated for interference, calculating maximum signal-to-noise ratio for one of 64 information parameters and making a decision on detection by comparing the signal / noise ratio maximum signal / interference ratio, calculated in one of 64 information parameters.

EFFECT: increasing noise immunity and range of the receiving system at low frequencies in shallow and deep sea conditions by using a receiver system based on a combined receiver, in which is formed 10 spatial channels for complex intensity vector, 5 spatial channels for intensity vector rotor, 3 spatial channels for the sound pressure gradient vector and one spatial channel for sound pressure, in which a set of their 64 information parameters is generated using primary and secondary spectral analysis methods.

1 cl, 1 dwg