文章摘要
陈文剑,孙辉,张明辉,朱广平.基于时-空离散化的海底混响时间序列仿真方法[J].声学技术,2011,(2):173~177
基于时-空离散化的海底混响时间序列仿真方法
A method of simulating seafloor reverberation based on time-space discretization
投稿时间:2010-04-01  修订日期:2010-06-10
DOI:
中文关键词: 海底混响  时-空离散化  点散射模型
英文关键词: sea bottom reverberation  time-space discretization  point-scattering model
基金项目:
作者单位E-mail
陈文剑 哈尔滨工程大学水声技术国防科技重点实验室, 哈尔滨, 150001 chwjchwj@163.com 
孙辉 哈尔滨工程大学水声技术国防科技重点实验室, 哈尔滨, 150001  
张明辉 哈尔滨工程大学水声技术国防科技重点实验室, 哈尔滨, 150001  
朱广平 哈尔滨工程大学水声技术国防科技重点实验室, 哈尔滨, 150001  
摘要点击次数: 643
全文下载次数: 544
中文摘要:
      以海底混响为研究对象,提出了一种混响仿真时通过时空离散化处理降低计算量的方法。以混响的点散射模型为基础,海底混响认为是海底散射体对发射信号的响应,用线性网络对其进行描述,得到冲击响应函数。通过对冲击响应函数时间离散射化处理,相应的对海底进行空间区域划分,进而把散射体散射信号叠加时的叠加总数转化为时间域离散化之后的时间段总数,降低了混响仿真时的计算量。通过计算机仿真结果,表明所提方法可以有效降低计算量,并且其相关特性与文献研究结果相符。
英文摘要:
      Taking the seafloor reverberation as a studied object,a method of simulating reverberation is proposed based on time-space discretization to increase the computing speed.The reverberation is the linear response of scatters to the emitting signal,and can be described by a linear network to obtain the impulse response function.By the time discretization of the impulse response function and regional division of the seafloor,the summation of scatters is translated into the total number of time slice,and the computing speed is increased.The results of numerical simulation show that the proposed method can effectively reduce the computational complexity,and the performance is well in agreement with the theoretical analysis.
查看全文   查看/发表评论  下载PDF阅读器
关闭
function PdfOpen(url){ var win="toolbar=no,location=no,directories=no,status=yes,menubar=yes,scrollbars=yes,resizable=yes"; window.open(url,"",win); } function openWin(url,w,h){ var win="toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=" + w + ",height=" + h; controlWindow=window.open(url,"",win); } &et=2D8A5CE31A4A632B20814B838051FABFB1FE27AC2DEABB7EF3102582E5C8519A2E4659CBA3D7F0ED42DCF6842BE44E9A690BF0CFEC79BA288A2DD29DB4F8A26449CC673E45C23AF4D6D878A4DA03EF1DAB8413B84C1222C7&pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=DDCFCD5ACE1B1E5A6D46213553C850CA&yid=9377ED8094509821&aid=&vid=&iid=0B39A22176CE99FB&sid=DABEF202280E7EF1&eid=6425DAE0271BB751&fileno=20110213&flag=1&is_more=0">