多通道海底混响线性预测方法研究  

Research on Linear Prediction of Multi-channel Seafloor Reverberation

作　　者：郭熙业[1] 苏绍璟[1] 王跃科[1] 

机构地区：[1]国防科学技术大学机电工程与自动化学院,湖南长沙410073

出　　处：《兵工学报》2010年第1期99-103,共5页Acta Armamentarii

摘　　要：为了实现垂直分置结构接收换能器接收的多通道远程海底混响信号仿真,在多通道体积混响相关函数基础上,推导了多通道海底混响的相关函数。并且针对经典多通道混响预测方法计算复杂的问题,开发了一种新的AR模型预测方法。与经典预测方法相比,待估计系数数量由K×K×N降为K×K+N.最后,仿真试验了不同通道平稳混响信号的相关曲线。仿真结果显示:预测相关曲线与理论相关曲线能够较好的吻合,显示了新方法的有效性。In order to simulating multi-channel long-range seafloor reverberation received by vertically placed recievers,based on the correlation function of multi-channel volume reverberation,the correlation function of multi-channel seafloor reverberation was induced.A novel AR model prediction method was put forward to reduce complexity of the classic multi-channel reverberation prediction method. Compared with the classic prediction method,estimated coefficient amount decreases from K×K×N to K×K＋N.Finally,the stationary reverberation correlation curves of different channel were simulated,the simulated results show that the curves of predicted correlations fit with the theory correlations well which indicates the efficiency of the method.

关 键 词：声学 海底混响 线性预测 AR模型 相关 

分 类 号：TB56[交通运输工程—水声工程]