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- W4362659907 abstract "As an effective supplement to underwater acoustic signal, seismic wave excited by underwater acoustic sources in shallow water has gradually become a hot issue for scholars. Scholte wave has the characteristics of very low frequency, slow attenuation, long propagation distance and little influence by underwater sound velocity profile, which has the potential of realizing remote passive detection of underwater targets. The composition of seabed seismic wave excited by underwater acoustic source is complex, thus how to extract Scholte wave with high signal noise ratio from seabed seismic wave field is very important. In order to extract seabed Scholte wave with high resolution in shallow water-bottom interface, based on the polarization characteristics of seabed seismic wave, the time-domain polarization analysis method in seismology was improved in terms of filter to separate Scholte wave from other components of seabed seismic wave field, which is simulated based on the finite-infinite element coupling method. The Scholte wave in seabed seismic wave field is extracted and its background noise is suppressed using the improved method. Results of both simulations under the circumstances of hard and soft seabed show the effectiveness of the method, which also show that the length of time window can be determined by the input signal, and selection of the empirical coefficient is related to the type of seabed, and it increases with the increment of the shear wave velocity." @default.
- W4362659907 created "2023-04-07" @default.
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- W4362659907 date "2023-04-06" @default.
- W4362659907 modified "2023-10-16" @default.
- W4362659907 title "Extractions of components in the seabed seismic wave excited by underwater acoustic sources in shallow water by the improved time domain polarization analysis" @default.
- W4362659907 doi "https://doi.org/10.1117/12.2674006" @default.
- W4362659907 hasPublicationYear "2023" @default.
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