Interference structure of shallow water reverberation in time-frequency distribution

作     者：LI FengHua ZHANG YanJun ZHANG RenHe LIU JianJun 

作者机构：National Laboratory of AcousticsInstitute of AcousticsChinese Academy of SciencesBeijing 100190China Graduate University of Chinese Academy of ScienceBeijing 100190China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学:物理学、力学、天文学(英文版))

年 卷 期：2010年第53卷第8期

页      面：1408-1411页

核心收录：

学科分类：07[理学] 082403[工学-水声工程] 08[工学] 070206[理学-声学] 0824[工学-船舶与海洋工程] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China (Grant No. 10734100) 

主　　题：reverberation interference time-frequency waveguide invariant 

摘      要：The striations of the reverberation spectrum in the time-frequency distribution were observed in a shallow water acoustic experiment in 2002. A model following the coherent reverberation model developed in 2002 is presented to explain the observed striations. To examine the consistency between the measured data and numerical predictions, we have used a method based on Radon transform for determining the slope of the striations to the measured reverberation data and numerical predictions. The results indicate that the previously developed coherent reverberation model can predict the interference structure of the reverberation intensity in the time-frequency distribution.