阵元随机均匀分布球面阵列联合噪声源定位方法

发布时间：2018-05-18 22:34

本文选题：近场声全息 + 聚焦波束形成　；参考：《物理学报》2017年01期

【摘要】：基于球面传声器阵列的噪声源定位方法,设计加工了阵元随机均匀分布64元球面传声器阵列,研究了球面近场声全息和球谐函数模态展开聚焦波束形成联合噪声源定位识别方法,对算法的性能进行了仿真分析,并利用球面传声器阵列进行了噪声源的定位识别试验.研究表明,阵元随机均匀分布球面阵列具有全空间稳定的目标定位性能,球面近场声全息对低频近距离声源具有较高的定位精度,球谐函数模态展开聚焦波束形成对高频远距离声源具有较高的定位精度,将两种方法联合进行声源的定位识别,可以在较小孔径的球面阵列和较少阵元的条件下,在宽频带范围内获得对目标声源良好的定位性能.
[Abstract]:Based on the noise source localization method of spherical microphone array, a 64 element spherical microphone array with random and uniform distribution of array elements is designed and fabricated. Based on spherical near-field acoustic holography and spherical harmonic function mode unfolded focusing beamforming combined noise source location identification method is studied. The performance of the algorithm is simulated and the noise source identification experiment is carried out using spherical microphone array. The results show that the spherical array with random and uniform distribution of array elements has the property of full space stable target location, and the spherical near-field acoustic holography has a high localization accuracy for low-frequency and short-range acoustic sources. The spherical harmonic function mode unfolded focusing beamforming has high localization accuracy for high frequency and long distance sound sources. When the two methods are combined to identify the sound sources, the spherical arrays with smaller aperture and fewer array elements can be used to locate and identify the sound sources. Good localization performance for target sound source is obtained in a wide band range.
【作者单位】：哈尔滨工程大学水声技术重点实验室;哈尔滨工程大学水声工程学院;
【基金】：国家自然科学基金(批准号:11674075,11404076)资助的课题~~
【分类号】：TB53

【相似文献】