%0 Journal Article
%T Algorithm and experimental investigation of patch nearfield acoustic holography based on wave superposition approach<br>基于波叠加法的patch近场声全息及其实验研究
%A Xu Liang
%A Bi Chuan-Xing
%A Chen Jian
%A Chen Xin-Zhao
%A <br>徐亮
%A 毕传兴
%A 陈剑
%A 陈心昭
%J 物理学报
%D 2007
%I 
%X A new patch nearfield acoustic holography (PNAH) based on wave superposition approach is proposed in this paper. In the method, the sound field is extrapolated by superposing wave fields produced by a number of fictitious sources placed inside the radiator, and then the FFT is used for reconstructing the normal velocity or the field on and near the radiator. This method has higher computational accuracy and efficiency than other PNAH techniques, and is very easy for applications. In order to prove its validity, the method was used in the experiment to reconstruct the normal velocity of a clamped point-driven steel plate, and satisfactory results were obtained.
%K nearfield acoustic holography
%K nearfield extrapolation
%K wave superposition approach
%K Tikhonov regularization<br>近场声全息
%K 近场外推
%K 波叠加
%K Tikhonov正则化
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=CA995E7DFFFC7495&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=94C357A881DFC066&sid=7566B65E140CCD73&eid=5640F121ACFF7A53&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=15