基于声相关的海底回波仿真  

Seafloor reverberation simulation based on acoustic correlation logs

作　　者：薛敬宏[1] 金铭[1] 乔晓林[1] 

机构地区：[1]哈尔滨工业大学(威海)信息技术研究所,山东威海264209

出　　处：《大连海事大学学报》2007年第4期28-31,共4页Journal of Dalian Maritime University

摘　　要：为了弥补声相关计程仪(ACL)工作原理只能利用几何关系描述的不足,以声呐方程为基础,采用Kirch-hoff近似模型,研究了基于混响网络模型的海底回波.利用仿真回波数据及时-空相关函数,推导出船速从一维到三维不同条件下,采用平面阵进行接收时,满足两接收阵元接收回波相关性最大的条件,从而给出了波形不变性原理的一种数学描述方法.仿真结果证明了该描述方法的有效性.Realization of the seafloor reverberation simulation was studied based on the network model using the sonar equations and the Kirchhoff approximation scattering model to compensate the deficiency of the principle of acoustic correlation logs （ACL）, which could only be described with geometric relationship. The case of a plane array was analyzed from one dimensional to three dimensional velocity and sufficient conditions to keep the normalized space-time correlation function of reverberation close to 1 were obtained. The analytic expressions of waveform invariance principle are derived. Simulation result shows the validity of the proposed method.

关 键 词：海底回波 网络模型 仿真 Kirchhoff近似 声相关计程仪 

分 类 号：TB56[交通运输工程—水声工程]