A Full-Polarization Radar Image Reconstruction Method with Orthogonal Coding Apertures

Imaging radar is widely applied in both military and civil fields, including remote sensing. In recent years, polarization information has attracted more and more attention in the imaging radar. The orthogonality between different channels is always the core problem for the full-polarization imaging...

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Autores principales:	Tiehua Zhao, Qihua Wu, Feng Zhao, Zhiming Xu, Shunping Xiao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	compressed sensing joint reconstruction orthogonal coding aperture polarization radar imaging Science Q
Acceso en línea:	https://doaj.org/article/cc4091feba444df5b3534fc4be83521b
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id	oai:doaj.org-article:cc4091feba444df5b3534fc4be83521b
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spelling	oai:doaj.org-article:cc4091feba444df5b3534fc4be83521b2021-11-25T18:54:53ZA Full-Polarization Radar Image Reconstruction Method with Orthogonal Coding Apertures10.3390/rs132246262072-4292https://doaj.org/article/cc4091feba444df5b3534fc4be83521b2021-11-01T00:00:00Zhttps://www.mdpi.com/2072-4292/13/22/4626https://doaj.org/toc/2072-4292Imaging radar is widely applied in both military and civil fields, including remote sensing. In recent years, polarization information has attracted more and more attention in the imaging radar. The orthogonality between different channels is always the core problem for the full-polarization imaging radar. To solve this problem, an image reconstruction method using orthogonal coding apertures technique is proposed for full-polarization imaging radar in this paper. Firstly, the signal model of the orthogonal coding apertures is proposed. This model realizes the ideal time-domain orthogonality between switching two channels by the apertures with two trains of orthogonal codes. Then, a multichannel joint reconstruction method based on compressed sensing is proposed for the imaging processing, which is named the coded aperture simultaneous orthogonal matching pursuit (CAS-OMP) algorithm. The proposed algorithm combines the information of all polarization channels so as to ensure the consistency of the scattering point position obtained by each polarization channel and also improves the reconstruction accuracy. Finally, the simulation experiments using both the simple scaled model of the satellite and measured data of an unmanned aerial vehicle (UAV) are conducted, and the effectiveness of the proposed method is verified.Tiehua ZhaoQihua WuFeng ZhaoZhiming XuShunping XiaoMDPI AGarticlecompressed sensingjoint reconstructionorthogonal coding aperturepolarization radar imagingScienceQENRemote Sensing, Vol 13, Iss 4626, p 4626 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	compressed sensing joint reconstruction orthogonal coding aperture polarization radar imaging Science Q
spellingShingle	compressed sensing joint reconstruction orthogonal coding aperture polarization radar imaging Science Q Tiehua Zhao Qihua Wu Feng Zhao Zhiming Xu Shunping Xiao A Full-Polarization Radar Image Reconstruction Method with Orthogonal Coding Apertures
description	Imaging radar is widely applied in both military and civil fields, including remote sensing. In recent years, polarization information has attracted more and more attention in the imaging radar. The orthogonality between different channels is always the core problem for the full-polarization imaging radar. To solve this problem, an image reconstruction method using orthogonal coding apertures technique is proposed for full-polarization imaging radar in this paper. Firstly, the signal model of the orthogonal coding apertures is proposed. This model realizes the ideal time-domain orthogonality between switching two channels by the apertures with two trains of orthogonal codes. Then, a multichannel joint reconstruction method based on compressed sensing is proposed for the imaging processing, which is named the coded aperture simultaneous orthogonal matching pursuit (CAS-OMP) algorithm. The proposed algorithm combines the information of all polarization channels so as to ensure the consistency of the scattering point position obtained by each polarization channel and also improves the reconstruction accuracy. Finally, the simulation experiments using both the simple scaled model of the satellite and measured data of an unmanned aerial vehicle (UAV) are conducted, and the effectiveness of the proposed method is verified.
format	article
author	Tiehua Zhao Qihua Wu Feng Zhao Zhiming Xu Shunping Xiao
author_facet	Tiehua Zhao Qihua Wu Feng Zhao Zhiming Xu Shunping Xiao
author_sort	Tiehua Zhao
title	A Full-Polarization Radar Image Reconstruction Method with Orthogonal Coding Apertures
title_short	A Full-Polarization Radar Image Reconstruction Method with Orthogonal Coding Apertures
title_full	A Full-Polarization Radar Image Reconstruction Method with Orthogonal Coding Apertures
title_fullStr	A Full-Polarization Radar Image Reconstruction Method with Orthogonal Coding Apertures
title_full_unstemmed	A Full-Polarization Radar Image Reconstruction Method with Orthogonal Coding Apertures
title_sort	full-polarization radar image reconstruction method with orthogonal coding apertures
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/cc4091feba444df5b3534fc4be83521b
work_keys_str_mv	AT tiehuazhao afullpolarizationradarimagereconstructionmethodwithorthogonalcodingapertures AT qihuawu afullpolarizationradarimagereconstructionmethodwithorthogonalcodingapertures AT fengzhao afullpolarizationradarimagereconstructionmethodwithorthogonalcodingapertures AT zhimingxu afullpolarizationradarimagereconstructionmethodwithorthogonalcodingapertures AT shunpingxiao afullpolarizationradarimagereconstructionmethodwithorthogonalcodingapertures AT tiehuazhao fullpolarizationradarimagereconstructionmethodwithorthogonalcodingapertures AT qihuawu fullpolarizationradarimagereconstructionmethodwithorthogonalcodingapertures AT fengzhao fullpolarizationradarimagereconstructionmethodwithorthogonalcodingapertures AT zhimingxu fullpolarizationradarimagereconstructionmethodwithorthogonalcodingapertures AT shunpingxiao fullpolarizationradarimagereconstructionmethodwithorthogonalcodingapertures
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A Full-Polarization Radar Image Reconstruction Method with Orthogonal Coding Apertures

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