水平分置海底混响信号的空间相关特性研究  

Research on space correlation characteristic of horizontal bistatic seafloor reverberation signals

作　　者：朱艳[1] 陈刚[1] 鲁辛凯[1] 

机构地区：[1]中国船舶重工集团公司第七一○研究所,湖北宜昌443003

出　　处：《舰船科学技术》2009年第5期56-59,共4页Ship Science and Technology

摘　　要：海洋混响是影响声呐性能的主要因素之一,同时也包含了大量的海洋环境信息,因此对海洋混响的研究就显得尤为重要。本文依据海底散射系数的空间相关半径来划分散射单元,给出一种水平分置多阵元接收海底混响信号的仿真模型,重点分析了混响信号的空间相关特性。从理论上得出水平分置海底混响信号的空间相关特性符合sinc(x)函数衰减规律;根据仿真信号分析得出,混响信号的空间相关性随海底散射系数相关半径和发射信号脉宽增大而减小。The sea reverberation is one of the major factors that affect sonar performance,which also includes vast sea environment information. Therefore, it＇s greatly important to research the sea reverberation. Based on scattering element compartmentalized by space correlation radius of seabed scattering coefficient, an emulation model of seafloor reverberation signals received by horizontal bistatic multi-array is built up and the space correlation characteristic of reverberation signals is analyzed. The space correlation characteristic of horizontal bistatic seafloor reverberation signals accords with sinusoid function attenuation rule in theory. With analyzing of emulation signals, the space correlation characteristic of reverberation signals varies with the correlative radius of seabed scattering coefficient and pulse width of transmit signal by contraries.

关 键 词：海底混响 水平分置 空间相关 仿真 

分 类 号：U666.7[交通运输工程—船舶及航道工程]