基于简正波的浅海混响序列仿真  

Simulation of reverberation sequence in shallow-water based on normal-mode theory

作　　者：姚万军[1] 蔡志明[1] 

机构地区：[1]海军工程大学电子工程学院,武汉430033

出　　处：《声学技术》2009年第1期25-28,共4页Technical Acoustics

摘　　要：提出了一种基于简正波的混响时间序列仿真方法,基于运动声源和接收器的简正波声场和混响点散射模型,推导出了模型的理论公式,给出了其实现方法和仿真结果,并就仿真结果进行了混响时间序列幅度瞬时值、包络值的概率分布密度以及时间相关性等统计检验。和理论结果对比表明了该仿真模型的有效性,可用于浅海低频混响序列的仿真。A method of simulating time sequence of reverberation is presented based on the normal modes theory and the Point-scattering approach. The brief theoretical deduction, realization of the simulation method is given. Then some characters of the reverberation sequence, such as the distribution of probability density of transient amplitude and envelop, the time correlation, are tested. The comparison of the test with the theoretical analysis shows the validity of this method for the simulation of low frequency reverberation time sequence in shallow-water.

关 键 词：混响序列 简正波 点散射模型 仿真 

分 类 号：O421[理学—声学]