關鍵字查詢 | 類別:期刊論文 | | 關鍵字:Frequency striations induced by moving nonlinear internal waves and applications

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序號 學年期 教師動態
1 105/2 電機系 劉金源 教授 期刊論文 發佈 Frequency striations induced by moving nonlinear internal waves and applications , [105-2] :Frequency striations induced by moving nonlinear internal waves and applications期刊論文Frequency striations induced by moving nonlinear internal waves and applicationsT. C. Yang; C.-F. Huang; S. H. Huang; J.-Y. Liu,IEEE Journal of Oceanic Engineering 42(3), p.663–671Modal interferences are evident in the spectrogram of broadband signals propagated over distances and received on a single receiver. Plotted against range and frequency, the spectrogram displays striated bands of constant acoustic intensity levels as explained by the waveguide-invariant theory, the slope of which can be used to estimate the source range by the waveguide-invariant parameter “beta.” Given a vertical array of receivers, one finds, however, no frequency striation in the depth-integrated acoustic energy, as the total energy corrected for geometrical spreading remains “conserved” except for mode attenuations. When nonlinear solitary internal waves (SIWs) are present in the propagation path, one finds a different phe
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