摘要
Abstract
As the sound source identification technology by beamforming had high resolution in medium-high frequency,so it was widely used in engineering practice.Based on the plane wave assumption and the spherical wave assumption and taken the combo array for example,made the performance simulation of simple sound source,multiple sound sources identification by using delay-and-sum algorithm,the results show that the independent designed algorithm program is correct and can identify the single sound source and multiple sound sources.And then,compared the performance simulation between the cross-spectral and the cross-spec-tral with exclusion of autospectra,the results show that two algorithms can identify sound source accurately while the latter algo-rithm can suppress sidelobe effectively and improve the performance of sound source identification.In order to verify the correct-ness of algorithm program,engineering test was made,then the imaging results of single frequence were acquired,meanwhile an interface for the convenience of viewing data was developed.The correctness was verified by the comparison the imaging results by the cross-spectral beamforming method and the ones acquired by PULSE.关键词
波束形成/噪声源识别/性能仿真/应用Key words
beamforming/noise source identification/performance simulation/application分类
通用工业技术
