Research And Realization Of Underwater Acoustic Communication Based On Wavelet Analysis

These days,with the development of marine research and national defense construction,the demand for using underwater acoustic communication technology to transmit information has greatly increased.Underwater acoustic communication uses sound waves as a carrier,and carries out data or information transmission by means of ocean channels.Underwater acoustic communication technology is not only applied more and more widely in the military,in civilian has also been a number of applications,bringing a lot of convenience and benefits.The research of this subject is to explore effective underwater acoustic communication technology and design its hardware circuit system,which is of great significance and application value in underwater vehicle underwater communication.The main content contains the following three aspects:(1)Demodulation technology of underwater acoustic signals based on wavelet analysis.The feature of signal is extracted by wavelet transform,then the feature is analyzed and finally the original signal is reconstructed.(2)We design underwater acoustic modulation and demodulation circuit,in order to drive underwater acoustic transducer work.Also we establish of the hardware platform and carry out the underwater acoustic signal transmission and reception experiments.(3)On the basis of the hardware platform,underwater acoustic communication experiment is carried out,and the collected underwater acoustic signal data are processed and analyzed by the wavelet analysis method prposed in the paper.