Constant-Beamwidth Beamforming with Concentric Ring Arrays

Designing beampatterns with constant beamwidth over a wide range of frequencies is useful in many applications in speech, radar, sonar and communication. In this paper, we design constant-beamwidth beamformers for concentric ring arrays. The proposed beamformers utilize the circular geometry to prov...

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Autores principales:	Avital Kleiman, Israel Cohen, Baruch Berdugo
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	array processing constant-beamwidth beamformer circular sensor array concentric ring array Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/260ba88bf91c420ebfbc1970f2f9fef8
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spelling	oai:doaj.org-article:260ba88bf91c420ebfbc1970f2f9fef82021-11-11T19:13:13ZConstant-Beamwidth Beamforming with Concentric Ring Arrays10.3390/s212172531424-8220https://doaj.org/article/260ba88bf91c420ebfbc1970f2f9fef82021-10-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/21/7253https://doaj.org/toc/1424-8220Designing beampatterns with constant beamwidth over a wide range of frequencies is useful in many applications in speech, radar, sonar and communication. In this paper, we design constant-beamwidth beamformers for concentric ring arrays. The proposed beamformers utilize the circular geometry to provide improved beamwidth consistency compared to beamformers which are designed for linear sensor arrays of the same order. In the proposed configuration, all sensors on each ring share the same weight value. This constraint significantly simplifies the beamformers and reduces the hardware and computational resources required in a physical setup. Furthermore, a theoretical justification of the beamforming method is provided. We demonstrate the advantages of the proposed beamformers compared to the one-dimensional configuration in terms of directivity index, white noise gain and sidelobe attenuation.Avital KleimanIsrael CohenBaruch BerdugoMDPI AGarticlearray processingconstant-beamwidth beamformercircular sensor arrayconcentric ring arrayChemical technologyTP1-1185ENSensors, Vol 21, Iss 7253, p 7253 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	array processing constant-beamwidth beamformer circular sensor array concentric ring array Chemical technology TP1-1185
spellingShingle	array processing constant-beamwidth beamformer circular sensor array concentric ring array Chemical technology TP1-1185 Avital Kleiman Israel Cohen Baruch Berdugo Constant-Beamwidth Beamforming with Concentric Ring Arrays
description	Designing beampatterns with constant beamwidth over a wide range of frequencies is useful in many applications in speech, radar, sonar and communication. In this paper, we design constant-beamwidth beamformers for concentric ring arrays. The proposed beamformers utilize the circular geometry to provide improved beamwidth consistency compared to beamformers which are designed for linear sensor arrays of the same order. In the proposed configuration, all sensors on each ring share the same weight value. This constraint significantly simplifies the beamformers and reduces the hardware and computational resources required in a physical setup. Furthermore, a theoretical justification of the beamforming method is provided. We demonstrate the advantages of the proposed beamformers compared to the one-dimensional configuration in terms of directivity index, white noise gain and sidelobe attenuation.
format	article
author	Avital Kleiman Israel Cohen Baruch Berdugo
author_facet	Avital Kleiman Israel Cohen Baruch Berdugo
author_sort	Avital Kleiman
title	Constant-Beamwidth Beamforming with Concentric Ring Arrays
title_short	Constant-Beamwidth Beamforming with Concentric Ring Arrays
title_full	Constant-Beamwidth Beamforming with Concentric Ring Arrays
title_fullStr	Constant-Beamwidth Beamforming with Concentric Ring Arrays
title_full_unstemmed	Constant-Beamwidth Beamforming with Concentric Ring Arrays
title_sort	constant-beamwidth beamforming with concentric ring arrays
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/260ba88bf91c420ebfbc1970f2f9fef8
work_keys_str_mv	AT avitalkleiman constantbeamwidthbeamformingwithconcentricringarrays AT israelcohen constantbeamwidthbeamformingwithconcentricringarrays AT baruchberdugo constantbeamwidthbeamformingwithconcentricringarrays
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Constant-Beamwidth Beamforming with Concentric Ring Arrays

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