%0 Journal Article
%T Resolution enhancement of nearfield acoustic holography by the wave superposition approach<br>基于波叠加法的近场声全息空间分辨率增强方法
%A Zhang Xiao-Zheng
%A Bi Chuan-Xing
%A Xu Liang
%A Chen Xin-Zhao
%A <br>张小正
%A 毕传兴
%A 徐亮
%A 陈心昭
%J 物理学报
%D 2010
%I 
%X By the wave superposition approach a method of enhancing the spatial resolution of the nearfield acoustic holography is proposed. According to wave superposition approach, the source strengths of fictitious sources placed on the fictitious surface which is near the hologram surface are obtained by measuring the hologram pressure signal, then these fictitious sources are used to realize the interpolation of acoustic pressure, finally, the reconstruction can be done by the interpolated hologram pressure. By this method the spatial resolution of the reconstructed image can be improved, the measurement workload is reduced, and the measurement process is simplified. The parameters affecting the interpolated result are reasonably chosen by numerical simulations and the availability of this method is proved by numerical simulations and experimental resuets.
%K wave superposition approach
%K nearfield acoustic holography
%K spatial resolution<br>波叠加法
%K 近场声全息
%K 空间分辨率
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=5EC8D32A200904C9494F6F3D3D7029D8&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=5D311CA918CA9A03&sid=26E6FBE2799C88EA&eid=C43D404AC82822F4&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=15