摘要
在传统平面网格阵列基础上提出一种改进的三层立体分层网格阵列布局方法,并比较十字阵列、平面网格阵列在不同条件下的指向性,结果显示立体网格阵列的指向性在三者中是最好的。对于脉动球声源的识别仿真研究,验证了基于三层立体网格阵列的波束成形方法的可行性,可以有效地识别和定位噪声源。
On the basis of the traditional plane grid array, an improved 3D laminated grid array is proposed. Compared the array with the plane grid array and cross array, it is found that the improved 3D grid array has the best directional ability among the three arrays. Through the simulation of identification of pulsative spherical sound source, it is verified that based on the proposed improved 3 D grid array, the delay-and-sum beamforming method is feasible and effective in identifying and positioning the noise sources.
出处
《噪声与振动控制》
CSCD
北大核心
2009年第3期54-58,共5页
Noise and Vibration Control
基金
国家自然科学基金资助项目(项目编号:10504006
50675056)
霍英东教育基金会资助项目(项目编号:111058)
安徽省科技攻关项目(08010202011)
关键词
声学
噪声源识别
波束成形
延时求和法
传声器阵列
acoustics
noise source identification
beamforming
delay-and-sum method
mierophone array
