A broad-band constant beam-width array with four elements A broad-band constant beam-width array with four elements期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

A broad-band constant beam-width array with four elements

引用本文：	CHEN Guisheng (Shanghai Institute of Testing Technology,Shanghai 200233). A broad-band constant beam-width array with four elements[J]. 声学学报：英文版, 1993, 0(1)

作者姓名：	CHEN Guisheng (Shanghai Institute of Testing Technology Shanghai 200233)

作者单位：	Shanghai Institute of Testing Technology，Shanghai 200233

摘要：	This paper describes in detail an acoustical array structure with fourelements that have cosine directivity function over a certain frequency range.The acoustical axis directions of these elements are orthogonal to each other,sotheir beams cover all bearing angles within 360°.By use of the amplitude bear-ing method,it is easy to detect the bearing of incident acoustic signal.A specialsound reflection foam rubber is designed as a back baffle of the array.It hasbeen shown,in practice,that the constant beam-width has been obtained for amultiple frequency band of the ratio of 8:1.The paper also gives a mathematicalmodel for the array structure.The theoretical values are consistent with themeasured results.
A broad-band constant beam-width array with four elements

CHEN Guisheng. A broad-band constant beam-width array with four elements[J]. Chinese Journal of Acoustics, 1993, 0(1)

Authors:	CHEN Guisheng

Abstract:

Keywords:	Acoustical array Constant beam-width Sound radiation.
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