Beampattern analysis of frequency diverse array radar: a review

Abstract Electronic beam steering is an essential feature of state-of-the-art radar systems. Conventional phased array (PA) radars with fixed carrier frequencies are well-known for electronically steering their beam with high directivity. However, the resulting beampattern is angle-dependent but ran...

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Autores principales:	Zeeshan Ahmad, Meng Chen, Shu-Di Bao
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Frequency diverse array Frequency offset Phased array Range-angle dependent beampattern Time-variant beampattern Telecommunication TK5101-6720 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/3fd32be12ba6479a932b460f8d91b69b
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spelling	oai:doaj.org-article:3fd32be12ba6479a932b460f8d91b69b2021-11-21T12:06:03ZBeampattern analysis of frequency diverse array radar: a review10.1186/s13638-021-02063-61687-1499https://doaj.org/article/3fd32be12ba6479a932b460f8d91b69b2021-11-01T00:00:00Zhttps://doi.org/10.1186/s13638-021-02063-6https://doaj.org/toc/1687-1499Abstract Electronic beam steering is an essential feature of state-of-the-art radar systems. Conventional phased array (PA) radars with fixed carrier frequencies are well-known for electronically steering their beam with high directivity. However, the resulting beampattern is angle-dependent but range-independent. Recently, a new electronic beam steering concept, referred to as frequency diverse array (FDA) radar, has attracted increasing attention due to its unique range-angle dependent beampattern. More importantly, the FDA radar employs a small frequency increment across the array elements to achieve beam steering as a function of angle, range, and time. In this paper, we review the development of the FDA radar since its inception in 2006. Since the frequency offset attaches great importance in FDAs to determine the beampattern shape, initially much of the research and development were focused on designing the optimal frequency offsets for improved beampattern synthesis. Specifically, we analyze characteristics of the FDA beampattern synthesis using various frequency offsets. In addition to analyzing the FDA beampattern characteristics, this study also focuses on the neglected propagation process of the transmitted signals in the early FDA literature, and discuss the time-variant perspective of FDA beampatterns. Furthermore, FDA can also play a significant role in wireless communications, owing to its potential advantages over the conventional PAs. Therefore, we highlight its potential applications in wireless communication systems. Numerical simulations are implemented to illustrate the FDA beampattern characteristics with various frequency offset functions.Zeeshan AhmadMeng ChenShu-Di BaoSpringerOpenarticleFrequency diverse arrayFrequency offsetPhased arrayRange-angle dependent beampatternTime-variant beampatternTelecommunicationTK5101-6720ElectronicsTK7800-8360ENEURASIP Journal on Wireless Communications and Networking, Vol 2021, Iss 1, Pp 1-33 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Frequency diverse array Frequency offset Phased array Range-angle dependent beampattern Time-variant beampattern Telecommunication TK5101-6720 Electronics TK7800-8360
spellingShingle	Frequency diverse array Frequency offset Phased array Range-angle dependent beampattern Time-variant beampattern Telecommunication TK5101-6720 Electronics TK7800-8360 Zeeshan Ahmad Meng Chen Shu-Di Bao Beampattern analysis of frequency diverse array radar: a review
description	Abstract Electronic beam steering is an essential feature of state-of-the-art radar systems. Conventional phased array (PA) radars with fixed carrier frequencies are well-known for electronically steering their beam with high directivity. However, the resulting beampattern is angle-dependent but range-independent. Recently, a new electronic beam steering concept, referred to as frequency diverse array (FDA) radar, has attracted increasing attention due to its unique range-angle dependent beampattern. More importantly, the FDA radar employs a small frequency increment across the array elements to achieve beam steering as a function of angle, range, and time. In this paper, we review the development of the FDA radar since its inception in 2006. Since the frequency offset attaches great importance in FDAs to determine the beampattern shape, initially much of the research and development were focused on designing the optimal frequency offsets for improved beampattern synthesis. Specifically, we analyze characteristics of the FDA beampattern synthesis using various frequency offsets. In addition to analyzing the FDA beampattern characteristics, this study also focuses on the neglected propagation process of the transmitted signals in the early FDA literature, and discuss the time-variant perspective of FDA beampatterns. Furthermore, FDA can also play a significant role in wireless communications, owing to its potential advantages over the conventional PAs. Therefore, we highlight its potential applications in wireless communication systems. Numerical simulations are implemented to illustrate the FDA beampattern characteristics with various frequency offset functions.
format	article
author	Zeeshan Ahmad Meng Chen Shu-Di Bao
author_facet	Zeeshan Ahmad Meng Chen Shu-Di Bao
author_sort	Zeeshan Ahmad
title	Beampattern analysis of frequency diverse array radar: a review
title_short	Beampattern analysis of frequency diverse array radar: a review
title_full	Beampattern analysis of frequency diverse array radar: a review
title_fullStr	Beampattern analysis of frequency diverse array radar: a review
title_full_unstemmed	Beampattern analysis of frequency diverse array radar: a review
title_sort	beampattern analysis of frequency diverse array radar: a review
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/3fd32be12ba6479a932b460f8d91b69b
work_keys_str_mv	AT zeeshanahmad beampatternanalysisoffrequencydiversearrayradarareview AT mengchen beampatternanalysisoffrequencydiversearrayradarareview AT shudibao beampatternanalysisoffrequencydiversearrayradarareview
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Beampattern analysis of frequency diverse array radar: a review

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