| The WKBZ mode approach to sound propagation in range-independent ocean channels |
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| 作者姓名： | ZHANG Renhe HE Yi and LIU Hong |
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| 摘 要： | I.IntroductionThenorma1-modeapproachcangiveanexactso1utiontotheacousticfie1dinastratifiedmedium,soitisoftenusedtocomparewithotherapproximatemethodssuchasraytheory,parabo1icequationl'](PE)methodandGaussianbeam21approach,andtakenasacriteriontochecktheaccuracyofapproximatemeth0dsl3J.Themodeapproachmayalsobeextendedtorange-dcpendente..i,onmentsl4.5l.Thoughtherearemanynumerica1propagationcodesbasedonthemodeapproachI'],theconventionalmodeapproachisawkwardtoapplyt0'higherfrequencya-ndbroadbandprop…
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The WKBZ mode approach to sound propagation in range-independent ocean channels |
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| Authors: | ZHANG Renhe HE Yi and LIU Hong |
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| Institution: | State Key toboratory of Acouslics. Chinese Academy of Sciences. Beijing 100080 |
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| Abstract: | The WKBZ approximation with the surface phace-shift correction is used to compute mode eigenfunctions, which has advantages of concise form and easy calculation. On the basis of the WKBZ eigenfunction, a mode approach is proposed. This approach has been applied to sound propagation in the North Pacific, and a great number of numerical examples are given. The results show that the WKBZ mode approach is a fast and accurate numerical method to calculate the acoustic field of convergence zones in stratified ocean channels. |
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| Keywords: | Propagation Normal mode WKBZ approach Underwater channel |
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