DOI码：10.1121/10.0034353
发表刊物：The Journal of the Acoustical Society of America
摘要：In light of the growing market of urban air mobility, it is crucial to accurately detect the stationary or moving noise sources within the complex scattering environments caused by aircraft structures such as airframes and engines. This study combines conventional and wavelet-based beamforming techniques with an acoustic scattering prediction method to develop an acoustic imaging approach that considers scattering effects. Tailored Green's function is numerically evaluated and used to compute the steering vectors and the specific delayed time used in those beam-forming methods. By examining common scenarios where a scatterer is positioned between the source plane and the array plane, it is observed that beamforming in a scattering environment differs from that in free space, leading to improved resolution alongside scattering-induced side lobes. The effectiveness of the developed method is validated through numerical simulations and experimental studies, confirming its improved ability to localize both stationary and rotating sound sources in a shielded environment. This advancement offers effective techniques for acoustic measurement and fault monitoring in the presence of structural scatterers.
合写作者：Zhenjun Peng, Bao Chen, Zhida Ma, Peng Zhou, Guocheng Zhou
第一作者：Lican Wang
论文类型：期刊论文
通讯作者：Chen Wangqiao, Siyang Zhong
学科门类：工学
一级学科：航空宇航科学与技术
文献类型：J
卷号：156
期号：5
页面范围：3102-3111
是否译文：否
发表时间：2024-11-01
收录刊物：SCI