摘要
介绍了一种基于波叠加方法的可视化声源识别技术。应用波叠加基本理论,采用Burton-Miller型组合层势法或复数失径方法克服解的非惟一性问题,并通过Tikhonov正则化方法求解这一反问题。对两脉动球声源和两摆动球声源进行数值仿真,并与解析解进行对比,仿真结果可以很好地识别出两声源的位置。另外,稳健性分析结果表明该方法具有较好的稳健性。最后,通过实验进一步验证了波叠加方法用于声源识别的可行性。
A visualization method for identifying the acoustic source is proposed based on the wave superposition method and Tikhonov regularization. Numerical simulations both for two pulsating spheres and two oscillating spheres are conducted, and results validate the effectiveness of the method. The robustness of the proposed method is analyzed by numerical experiments. Experimental results show that the method has strong robustness. Finally, an experiment is conducted in semi-anechoic chamber, thus validating the effectiveness of the method.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2008年第6期804-809,共6页
Journal of Nanjing University of Aeronautics & Astronautics
基金
机械系统与振动国家重点实验室基金(VSN-2007-05)资助项目
关键词
声全息
波叠加方法
TIKHONOV正则化
acoustic holography
wave superposition method
Tikhonov reguralization
