卷积-脉冲响应法在线性相控阵中的应用  

Application of Convolution-Impulse Approach in Linear Phased Array

作　　者：许雪莹[1] 葛剑敏[1] 刘镇清[1] 

机构地区：[1]同济大学声学所,上海200092

出　　处：《同济大学学报（自然科学版）》2005年第12期1699-1703,共5页Journal of Tongji University:Natural Science

基　　金：上海市科委重大科技攻关项目(03dZ12025)

摘　　要：运用卷积-脉冲响应法来模拟线性相控阵换能器的近场声场,并分别计算了阵的声束纯聚焦和偏转聚焦时的脉冲响应,以及峰值声压的轴向包络线.分析结果表明,该方法可以作为对近场声场进行分析的有效工具.In this paper the convolution-impulse response approach is briefly introduced. In order to show the abilities of the approach, several numerical examples of the array near-field are given, in which the cases of pure beam focusing and beam focusing with deflection are considered. The results show that this approach appears to be an effective tool not only for a qualitative analysis of the nearfield, but also for the prediction of the sound field.

关 键 词：线性相控阵 卷积-脉冲法 纯聚焦 偏转聚焦 

分 类 号：TB552[理学—物理]