Applications of Waveguide Invariant Theory to the Analysis of Interference Phenomena in Deep Water  

作　　者：LI Qian-Qian LI Zheng-Lin ZHANG Ren-He 李倩倩;李整林;张仁和(State Key Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190;Haikou Laboratory,Institute of Acoustics,Chinese Academy of Sciences,Haikou 570105;Graduate University of Chinese Academy of Sciences,Beijing 100190)

机构地区：[1]State Key Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190 [2]Haikou Laboratory,Institute of Acoustics,Chinese Academy of Sciences,Haikou 570105 [3]Graduate University of Chinese Academy of Sciences,Beijing 100190

出　　处：《Chinese Physics Letters》2011年第3期114-116,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10974218 and 10734100;and the Knowledge Innovation Program of Chinese Academy of Sciences(KZCX1-YW-12-2).

摘　　要：The waveguide invariant,denoted asβ,can be used to describe the slope of the intensity of a broadband acoustic signal.In deep water,the interference patterns of the areas with dominant waterborne modes and only with bottom bounce modes are greatly different.This phenomenon is illustrated by simulation and explained by the distribution ofβ.The theory shows that in the convergence zone,βapproaches infinity,which leads to the larger slope of sound intensity;on the contrary,in the shadow zone,βis close to 1,leading to smaller slopes.

关 键 词：WAVEGUIDE WAVEGUIDE DEEP 

分 类 号：TN2[电子电信—物理电子学]