Coupled Perturbed Modes over Sloping Penetrable Bottom
Fei-Long Zhu1,2 , Eric I. Thorsos3 , Feng-Hua Li1**
1 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 1001902 University of Chinese Academy of Sciences, Beijing 1000493 Applied Physics Laboratory, University of Washington, WA 98105, USA
Abstract ：In environments with water depth variations, one-way modal solutions involve mode coupling. Higham and Tindle developed an accurate and fast approach using perturbation theory to locally determine the change in mode functions at steps. The method of Higham and Tindle is limited to low frequency ($\le$250 Hz). We extend the coupled perturbation method, thus it can be applied to higher frequencies. The approach is described and some examples are given.
收稿日期: 2017-02-24
出版日期: 2017-06-23
:
43.30.Bp
(Normal mode propagation of sound in water)
43.20.Bi
(Mathematical theory of wave propagation)
43.20.Mv
(Waveguides, wave propagation in tubes and ducts)
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2017, Vol. 34 
