| 三维浅海简正波混响模型 |
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| 引用本文： | 王志强,姜卫东,安良,陆佶人.三维浅海简正波混响模型[J].声学技术,2007,26(5):802-805. |
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| 作者姓名： | 王志强 姜卫东 安良 陆佶人 |
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| 作者单位： | 1. 东南大学无线电工程系,南京,210096;河海大学电子信息系,南京,210098
2. 东南大学无线电工程系,南京,210096 |
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| 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。
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| 关 键 词： | 混响模型 简正波 散射 |
| 文章编号： | 1000-8630（2007）-05-0802-04 |
| 收稿时间： | 2006-08-30 |
| 修稿时间： | 2006-11-24 |
Three-dimensional shallow-water normal-mode reverberation model |
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| WANG Zhi-qiang,JIANG Wei-dong,AN Liang and LU Ji-ren.Three-dimensional shallow-water normal-mode reverberation model[J].Technical Acoustics,2007,26(5):802-805. |
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| Authors: | WANG Zhi-qiang JIANG Wei-dong AN Liang and LU Ji-ren |
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| Affiliation: | 1. Department of Radio Engineering, Southeast University, Nanjing 210096, China; 2. Depatment of Electronical Information, Hohai University, Nanjing 210098, China |
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| Abstract: | 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 area,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. |
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| Keywords: | reverberation model nomal-mode wave scattering |
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