海洋测深中垂直分置海底混响信号的仿真分析

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英文篇名：Analysis of Vertical Bistatic Seafloor Reverberation Signal in Marine Sounding 作者：王美娜 ; 边刚 ; 孙超 ; 王玮 英文作者：WANG Meina;BIAN Gang;SUN Chao;WANG Wei;Department of Hydrography and Cartography,Dalian Naval Academy; 关键词：海洋测深 ; 海底混响 ; 垂直分置 ; 时间相关 ; 空间相关 ; 信号检测 英文关键词：marine sounding;;seafloor reverberation;;vertical division;;time correlation;;spatial correlation;;signal detection 中文刊名：HYCH 英文刊名：Hydrographic Surveying and Charting 机构：海军大连舰艇学院海洋测绘系; 出版日期：2017-01-25 出版单位：海洋测绘 年：2017 期：v.37;No.174 基金：国家自然科学基金(41374108,41476087,41576105) 语种：中文; 页：HYCH201701021 页数：4 CN：01 ISSN：12-1343/P 分类号：78-81

摘要

海洋测深中,海底混响信号是测深仪回波信号检测的主要内容。测深仪通常采用信号的相关处理方法对其进行检测,因此在设计测深仪的回波处理单元时,系统地分析海底混响信号的相关特性就显得尤为重要,对混响信号仿真是分析其特性的有效手段。基于单元散射理论,依据海底散射系数的空间相关半径划分散射单元,给出垂直分置海底混响信号的仿真方法。研究结果表明,该模型物理意义明确,计算简单。仿真得到的海底混响信号具有非常好的空间相关性和时间自相关性,与实测的海底混响信号相符,可用于对混响场特性的分析,改善测深仪的设计,从而有效提高测深仪的测量精度。
        The seafloor reverberation signal is the main echo signal of echo signal detection. Related signal processing methods are usually used to detect the sounder,so in the echo sounder processing unit design,it is important to analyze the characteristics of the seafloor reverberation signal,and the reverberation signal simulation is an effective means to analyze the characteristics.Based on the element scattering theory,the space correlation radius of seabed scattering coefficient is adopted. Furthermore the simulation method of the vertical seafloor reverberation signal is put forward. The simulated results showthe model has clear physical meaning,simple calculation and the simulation of the seafloor reverberation signal with spatial correlation and time correlation is very good,consistent with the measured characteristics of seafloor reverberation signal,which can be used in the analysis of seafloor reverberation signal,so as to effectively improve the precision of marine sounding system.

引文

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