Adaptive Interference Simulation of Environment Noise

The sonar equation satisfied by the acoustic signal of the moving sound source is derived in the presence of artificial interference noise. Then, under the typical sound velocity conditions of shallow sea, considering the sound absorption of seawater, the propagation loss value of each frequency in the frequency band of 20–40 kHz is calculated, and the noise intensity of the marine environment is quantitatively analyzed from the sonar equation according to the speed of sound source motion. Change over time. Finally, in different time periods, the simulation generates artificial intervention noise. The spectrum of this noise satisfies the spectral statistical characteristics of the measured ambient noise, and its intensity enables the sonar equation to be established all the time. The simulation results show that when using the transducer to transmit human intervention noise, we can change the ocean environment noise level and significantly reduce the acoustic performance of the moving sound source.