摘要
提出了一种在近场条件下,利用垂直线阵聚焦波束形成技术测量目标噪声源的分布图(声图)的方法.垂直声压阵只能测得目标噪声源在某个垂直面内的二维声图,且存在前后(或左右)模糊问题.垂直矢量阵则可利用声压振速的联合信息,先通过直方图方位估计测向,再进行聚焦扫描,这种方法能很好地解决测量模糊问题,并能得到目标的三维声图.
A method was developed tor near field measurement using focused beam forming with a distribution map （image） of the target＇s noise sources in a vertical plane by a vertical fine array. Pressure sensor arrays can only measure a two-dimensional distribution of the target＇s noise sources in some given vertical plane and can not distinguish the target＇s left and right （or front and back）. Vector sensor arrays can solve this problem very well by using the combined information of pressure and particle velocity. We can first get the target＇s azimuth angle by histogram azimuth angle estimation, and then do focused beam scanning. It can also generate, from the target＇s noise sources, a three-dimensional image.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2009年第2期154-159,共6页
Journal of Harbin Engineering University
基金
水下测控技术国防科技重点实验室基金资助项目(YS0C260601)
哈尔滨工程大学基础研究基金资助项目(HEUFT07018)
关键词
垂直声压阵
聚焦波束形成
声图
垂直矢量阵
直方图方位估计
vertical pressure sensor array
focused beam forming
underwater image
vector sensor array
histogram azimuth angle estimation
