双基地声纳混响建模分析

Modeling and Analying for Bistatic Sonar Reverberation

在浅海环境下,混响是影响双基地声纳系统性能的主要因素,基于双基地声纳的几何特点,对接收端的混响进行了建模,并在接收端具有指向性的条件下,得出了混响面积以及接收端信混比的计算公式,对不同条件下接收端的混响强度以及信混比的变化进行了仿真分析,得到了不同条件下双基地声纳接收混响强度与收发位置、信号脉宽以及接受指向性的关系。

In the shallow water environment, the reverberation is the main factors that affect the performance of bistatic sonar,and based on the geometry distribution of the bistatic sonar system,this paper modeled the reverberation in the receiver,and under the condition that the receiver is directional,we deduced the equation of reverberation area and the signal-to-reverberation ratio（ SRR）,and simulated and analyzed the reverberation intensity and SRR in different conditions,and obtained the relationship of reverberation with the sonar position,impulse width and the receiver＇s directivity.