Mode Decomposition Beamformer for a Baffled Circular Array

Author

Jiang, Wei ; Yang, Yixin ; Ma, Yuanliang

Author_Institution

Inst. of Acousti. Eng., Northwestern Polytech. Univ., Xi´´an

fYear

2006

fDate

9-14 July 2006

Firstpage

3379

Lastpage

3382

Abstract

A new beamformer, named mode decomposition beamformer (MDB), for circular array mounted on a baffle is presented. In the proposed beamformer, the mode strength of sound field is computed using boundary element method (BEM), and then mode components of incoming wave are extracted via decomposing the sound field around the circular array by the spatial discrete Fourier transform. The synthesized beampattern is obtained based on the mode components and corresponding mode coefficients. The results of computer simulations for a 12-element circular array mounted on a rigid baffle verified the effectiveness of the beamformer developed in this paper

Keywords

antenna arrays; boundary-elements methods; discrete Fourier transforms; BEM; baffled circular array; beampattern; boundary element method; mode decomposition beamformer; sound field; spatial discrete Fourier transform; Acoustic arrays; Acoustical engineering; Boundary element methods; Computer simulation; Discrete Fourier transforms; Fourier series; Fourier transforms; Frequency; Sensor arrays; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium 2006, IEEE

Conference_Location

Albuquerque, NM

Print_ISBN

1-4244-0123-2

Type

conf

DOI

10.1109/APS.2006.1711339

Filename

1711339