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- W2348879891 abstract "Two methods for calculating the amplitude of the acoustic sink,by introducing the concept of the sink in time reversal method,are proposed.The first method is to derive the amplitude of the phase conjugation array in the focusing location of the acoustic sources directly,which is employed as the amplitude of the acoustic sink.The second method is to calculate the amplitude of the acoustic sink by introducing the measurement spherical surface.The effect of the spherical radius on focusing properties is also discussed.The numerical results show that the diffraction limit can be broken through at a certain distance by introducing the acoustic sink for the two methods.The best reconstruction can be obtained by considering the spherical measurement surface,that can yield more accurate results which agree well with the theoretical solution of the point source.The radius of the spherical measurement surface must be less than the wavelength according to the properties of the evanescent waves." @default.
- W2348879891 created "2016-06-24" @default.
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- W2348879891 date "2011-01-01" @default.
- W2348879891 modified "2023-09-22" @default.
- W2348879891 title "Sound Identification using Phase Conjugation by Introducing the Acoustic Sink" @default.
- W2348879891 hasPublicationYear "2011" @default.
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