摘要
推导了浅海简正波混响模型,模型计算了从声源到浅海水底散射域声波能量的传播及其反射过程。在散射域,考虑了复本征值,有效的简正波对入射波和混响强度的影响。并且将简正波分解为上行波和下行波,利用下行波和Lambert散射定律,计算海底散射后接收的混响强度,其结果与收发同置的水听器接收数据一致。所得出的混响强度模型,物理意义清楚,形式简单,具有较强的普遍适用性。
A 3D shallow-water normal-mode reverberation model is derived. The model is used to calculate the acoustic energy propagating from the source to the scattering area, and from the scattering area to the receiver. In the scattering ares the influence of the complex eigenvalues and the effective normal-mode wave on the incident wave and reverberation is discussed. The normal-mode wave is decomposed into up-going and down-going waves. By down-wave and the Lambert scattering law, the receiving reverberation intensity by scattering of bottom in the shallow-water is in accordance with the receiving data of monostatic hydrophones. The form of reverberation model is simple, which has clearly physical meaning and general applicability.
出处
《声学技术》
CSCD
北大核心
2007年第5期802-805,共4页
Technical Acoustics
关键词
混响模型
简正波
散射
reverberation model
nomal-mode wave
scattering
