Application of Time-Frequency Analysis and Wavelet Transform in Underwater Acoustic Localization
This paper studies an underwater acoustic target recognition and localization method based on joint time-frequency wavelet analysis.First,the basic principles of time-frequency analysis and wavelet transform are deeply studied to construct feature representations in the joint time-frequency wavelet domain.Secondly,in the experimental part,MATLAB software was used to conduct experiments on simulated underwater acoustic signals,and the actual environment was simulated by adding noise.The experimental results show that the joint time-frequency wavelet analysis performs well in underwater target recognition and localization,especially in noise environment.By analyzing the target recognition function and normalized target recognition function,we successfully located underwater targets and verified the effectiveness of this method.This article provides a new analysis method for the field of underwater acoustic signal processing,and provides useful references for target detection and localization in practical applications.
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