基于MUSIC算法的水下噪声源近场高分辨定位方法  

A near-field and high-resolution localization method of an underwater noise source based on a MUSIC algorithm

作　　者：杨德森 陈欢 时胜国 

机构地区：[1]哈尔滨工程大学水声技术国防科技重点实验室,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2011年第8期1019-1023,共5页Journal of Harbin Engineering University

基　　金：国家科学技术研究重点项目(51310080202)

摘　　要：针对舰艇辐射噪声的能量和线谱主要分布在低频段,而常规噪声源近场定位方法在低频段很难获得到比较理想的空间分辨率,无法满足舰艇低频辐射噪声源定位识别需求问题.在研究远场平面波模型下MUSIC算法基础上,建立了基于相位和幅度联合补偿的MUSIC近场噪声源定位算法,通过仿真计算和湖试试验研究了该算法的噪声源定位性能,结果表明该算法可以有效地提高基阵在低频段的空间分辨率,而且可以在一定程度上抑制高频段的空间混叠,具有较高的工程应用价值.The energy and spectra line of noise radiated from a naval ship are mainly distributed in the low frequency range.while it is difficult for the conventional noise source near-field localization method to obtain a satisfactory spatial resolution in the low frequency band,this is hard to meet the localization and identification requirements of naval ship on low-frequency radiated noise source.A MUSIC near-field noise source localization algorithm based on the combined compensation of phase and amplitude was established under the MUSIC algorithm of a far-field plane wave model in this paper.The performance of the noise source localization algorithm was studied by simulation and a lake test.The results show that the algorithm may not only effectively improve the spatial resolution of arrays at a low frequency,but also control the spatial aliasing at a high frequency,it has high engineering application value.

关 键 词：水下噪声源 近场定位 幅度补偿 MUSIC算法 高分辨 

分 类 号：TB535[理学—物理]