Design of Fast Beam Forming of Improved Circular Planar Array

doi:10.3969/j.issn.1000-1093.2017.05.016

Abstract

Abstract: In order to reduce the computational complexity of beam forming of 3D imaging sonar based on circular planar array, a method of improving the array design and optimizing the beam azimuth is proposed. The improved circular array consists of a plurality of linear arrays passing through the center, and the beam forming is equivalent to the superposition of the beam forming of all the linear arrays. By optimizing the beam azimuth, the beam forming process of each linear array is equivalent to a one-dimensional fast Fourier transform operation of equal length. The simulated results show that the beam forming computation of the improved circular array is significantly lower than that of the direct calculation. The use of improved circular array can significantly reduce the complexity of the signal processing system and improve the comprehensive performance of 3D imaging sonar. Key

Key words: acoustics, 3Dunderwatersonar, circulararrays, beampattern, fastFouriertransform

CLC Number:

YU Di-fei， ZHANG Chun-hua， HUANG Yong. Design of Fast Beam Forming of Improved Circular Planar Array[J]. Acta Armamentarii, 2017, 38(5): 959-967.

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第38卷第5期
2017 年5月兵工学报ACTA
ARMAMENTARIIVol.38No.5May2017

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