TARGET NOISE SIGNAL PROCESSING METHOD Russian patent published in 2022 - IPC G01S3/80 

FIELD: hydroacoustics.

SUBSTANCE: invention relates to hydroacoustics. In the method for processing the noise emission signal of an object, the noise emission signal is received by a static fan of directivity characteristics. The average signal level in each directivity characteristic, the average signal frequency and the directivity characteristic with the maximum average noise emission signal level are determined. Determine the value of the bearing at the time of measurement of the maximum average level. The ratio of the previous correlation coefficients to the next ones in the directivity characteristic with the maximum average level is determined. The bearing value is determined at the time of measuring the maximum average level. The ratio of the previous correlation coefficients to the next ones in the directivity characteristic with the maximum average level is determined. If the correlation coefficient has decreased by more than 30% compared to the previous measurement, then the average signal level is compared before and after the change in the correlation coefficient. Compare the values ​​of the middle frequencies measured in the selected directivity characteristic. A decision is made about the presence of an interfering source of noise emission if the average frequencies have changed and the average level of the noise emission signal has increased simultaneously with a decrease in the correlation coefficient.

EFFECT: failure of the auto-tracking of the selected object is prevented and the change in the stationarity of the process is determined.

1 cl, 1 dwg