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Electromagnetic Vortex-Based Radar Imaging Using a Single Receiving Antenna: Theory and Experimental Results

Radar imaging based on electromagnetic vortex can achieve azimuth resolution without relative motion. The present paper investigates this imaging technique with the use of a single receiving antenna through theoretical analysis and experimental results. Compared with the use of multiple receiving an...

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Detalles Bibliográficos
Autores principales: Yuan, Tiezhu, Wang, Hongqiang, Cheng, Yongqiang, Qin, Yuliang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5375916/
https://www.ncbi.nlm.nih.gov/pubmed/28335487
http://dx.doi.org/10.3390/s17030630
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author Yuan, Tiezhu
Wang, Hongqiang
Cheng, Yongqiang
Qin, Yuliang
author_facet Yuan, Tiezhu
Wang, Hongqiang
Cheng, Yongqiang
Qin, Yuliang
author_sort Yuan, Tiezhu
collection PubMed
description Radar imaging based on electromagnetic vortex can achieve azimuth resolution without relative motion. The present paper investigates this imaging technique with the use of a single receiving antenna through theoretical analysis and experimental results. Compared with the use of multiple receiving antennas, the echoes from a single receiver cannot be used directly for image reconstruction using Fourier method. The reason is revealed by using the point spread function. An additional phase is compensated for each mode before imaging process based on the array parameters and the elevation of the targets. A proof-of-concept imaging system based on a circular phased array is created, and imaging experiments of corner-reflector targets are performed in an anechoic chamber. The azimuthal image is reconstructed by the use of Fourier transform and spectral estimation methods. The azimuth resolution of the two methods is analyzed and compared through experimental data. The experimental results verify the principle of azimuth resolution and the proposed phase compensation method.
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spelling pubmed-53759162017-04-10 Electromagnetic Vortex-Based Radar Imaging Using a Single Receiving Antenna: Theory and Experimental Results Yuan, Tiezhu Wang, Hongqiang Cheng, Yongqiang Qin, Yuliang Sensors (Basel) Article Radar imaging based on electromagnetic vortex can achieve azimuth resolution without relative motion. The present paper investigates this imaging technique with the use of a single receiving antenna through theoretical analysis and experimental results. Compared with the use of multiple receiving antennas, the echoes from a single receiver cannot be used directly for image reconstruction using Fourier method. The reason is revealed by using the point spread function. An additional phase is compensated for each mode before imaging process based on the array parameters and the elevation of the targets. A proof-of-concept imaging system based on a circular phased array is created, and imaging experiments of corner-reflector targets are performed in an anechoic chamber. The azimuthal image is reconstructed by the use of Fourier transform and spectral estimation methods. The azimuth resolution of the two methods is analyzed and compared through experimental data. The experimental results verify the principle of azimuth resolution and the proposed phase compensation method. MDPI 2017-03-19 /pmc/articles/PMC5375916/ /pubmed/28335487 http://dx.doi.org/10.3390/s17030630 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yuan, Tiezhu
Wang, Hongqiang
Cheng, Yongqiang
Qin, Yuliang
Electromagnetic Vortex-Based Radar Imaging Using a Single Receiving Antenna: Theory and Experimental Results
title Electromagnetic Vortex-Based Radar Imaging Using a Single Receiving Antenna: Theory and Experimental Results
title_full Electromagnetic Vortex-Based Radar Imaging Using a Single Receiving Antenna: Theory and Experimental Results
title_fullStr Electromagnetic Vortex-Based Radar Imaging Using a Single Receiving Antenna: Theory and Experimental Results
title_full_unstemmed Electromagnetic Vortex-Based Radar Imaging Using a Single Receiving Antenna: Theory and Experimental Results
title_short Electromagnetic Vortex-Based Radar Imaging Using a Single Receiving Antenna: Theory and Experimental Results
title_sort electromagnetic vortex-based radar imaging using a single receiving antenna: theory and experimental results
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5375916/
https://www.ncbi.nlm.nih.gov/pubmed/28335487
http://dx.doi.org/10.3390/s17030630
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AT chengyongqiang electromagneticvortexbasedradarimagingusingasinglereceivingantennatheoryandexperimentalresults
AT qinyuliang electromagneticvortexbasedradarimagingusingasinglereceivingantennatheoryandexperimentalresults