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	Analysis and improvement of sound radiation performance of spherical cap radiator
	Tang, YiZheng（Hangzhou Inst Appl Acoust, Hangzhou 310012, Zhejiang, Peoples R China） ; Wu, ZhaoJun ; Wu ZJ(吴昭军) ; Tang, LiGuo ; Tang LG(汤立国) ; Tang YZ(唐义政)
	2010-05
关键词	spherical cap radiator acoustic soft material directivity
英文摘要	A spherical cap radiator is one of the important parts of an underwater wide-beam imaging system. The back radiation of a traditional spherical cap radiator, which is composed of a vibrating cap and a rigid baffle, is strong and its far-field directivity function may fluctuate in big amplitude in the vicinity of the polar axis. These shortcomings complicate the processing of the reflective waves received for imaging the targets. In this study, the back radiation is weakened by adding an acoustic soft material belt between the vibrating cap and the rigid baffle. And the fluctuation mentioned above is lowered remarkably by dividing the spherical cap radiator into many annuluses and a relatively smaller spherical cap, and by controlling the phase retardations of all elements appropriately. Furthermore, the numerical experiments are carried out by the finite element method (FEM) to prove the validity of the above methods.; National High Technology Research and Development Program of China [2006AA09Z109]; Natural Science Foundation of Fujian Province, China [T0750014]
语种	英语
出版者	IOP PUBLISHING LTD
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1088/1674-1056/19/5/054303]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Tang, YiZheng,Wu, ZhaoJun,Wu ZJ,et al. Analysis and improvement of sound radiation performance of spherical cap radiator[J],2010.
APA	Tang, YiZheng,Wu, ZhaoJun,吴昭军,Tang, LiGuo,汤立国,&唐义政.(2010).Analysis and improvement of sound radiation performance of spherical cap radiator..
MLA	Tang, YiZheng,et al."Analysis and improvement of sound radiation performance of spherical cap radiator".(2010).

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