基于合成孔径方法的潜艇二维高频声散射特性分析  

2D-acoustic Scattering Property Analyses of Submarine Based on Synthetic Aperture Sonar

作　　者：杨海亮[1] 唐劲松[1] 徐海亭[2] 刘丹丹[1] 

机构地区：[1]海军工程大学电子工程学院,武汉430033 [2]中国科学院声学研究所北海站,青岛242600

出　　处：《系统仿真学报》2009年第23期7433-7435,7463,共4页Journal of System Simulation

基　　金：科技重点实验室延伸性发展项目基金(YS0C260602);预先研究项目基金(51303020402-02)

摘　　要：水下复杂形状目标的散射特性预测一般采用真实孔径成像,但其存在图像分辨率难以提高,无法获取复杂目标的精细结构特征的弱点。而相比之下,合成孔径声纳成像方位分辨率很高,成像质量有较大改善,因此我们依据潜艇散射的物理声学Kirchhoff积分原理和CAD技术,通过对潜艇建模仿真得到其散射回波数据,进而采用合成孔径技术实现对潜艇二维声散射特性的分析,得到了高分辨率的二维声图像.在一些水下装备的研制论证阶段,采用该方法可以有效地预测其散射特性,为设计低目标强度的装备提供依据。Because of the low resolution images by adopting the real aperture sonars,the fine description of complicated target cannot be obtained.Compared with it,synthetic aperture sonar has high resolution in azimuth,so the image quality improves obviously.So,echo data of submarine was acquired by modeling,according to the Kirchhoff integral theory of physical acoustics of submarine scattering and CAD technology.Synthetic aperture technology was adopted to calculate two dimension scattering property of submarine and high quality image was proposed.Before researching and producing of some underwater equipment,this method can be used to predict its scattering property,and offer the reference to design the equipment with low target strength.

关 键 词：散射特性 Kirchhoff积分 建模 合成孔径声纳 

分 类 号：TP721[自动化与计算机技术—检测技术与自动化装置]