Robust GMTI Scheme for Highly Squinted Hypersonic Vehicle-Borne Multichannel SAR in Dive Mode

While there are recent researches on hypersonic vehicle-borne multichannel synthetic aperture radar in ground moving target indication (HSV-MC-SAR/GMTI), this article, which specifically explores a robust GMTI scheme for the highly squinted HSV-MC-SAR in dive mode, is novel. First, an improved equiv...

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Autores principales:	Jiusheng Han, Yunhe Cao, Wenhua Wu, Yang Wang, Tat-Soon Yeo, Shuai Liu, Fengfei Wang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	chirp Fourier transform (CFT) clutter suppression ground moving target indication (GMTI) hypersonic vehicle (HSV) synthetic aperture radar (SAR) Science Q
Acceso en línea:	https://doaj.org/article/bef95a8fa9cc445cad03dfbf6f354051
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id	oai:doaj.org-article:bef95a8fa9cc445cad03dfbf6f354051
record_format	dspace
spelling	oai:doaj.org-article:bef95a8fa9cc445cad03dfbf6f3540512021-11-11T18:56:35ZRobust GMTI Scheme for Highly Squinted Hypersonic Vehicle-Borne Multichannel SAR in Dive Mode10.3390/rs132144312072-4292https://doaj.org/article/bef95a8fa9cc445cad03dfbf6f3540512021-11-01T00:00:00Zhttps://www.mdpi.com/2072-4292/13/21/4431https://doaj.org/toc/2072-4292While there are recent researches on hypersonic vehicle-borne multichannel synthetic aperture radar in ground moving target indication (HSV-MC-SAR/GMTI), this article, which specifically explores a robust GMTI scheme for the highly squinted HSV-MC-SAR in dive mode, is novel. First, an improved equivalent range model (IERM) for stationary targets and GMTs is explored, which enjoys a concise expression and therefore offers the potential to simplify the GMTI process. Then, based on the proposed model, a robust GMTI scheme is derived in detail, paying particular attention to Doppler ambiguity arising from the high-speed and high-resolution wide-swath. Furthermore, it retrieves the accurate two-dimensional speeds of GMTs and realizes the satisfactory performance of clutter rejection and GMT imaging, generating the matched beamforming and enhancing the GMT energy. Finally, it applies the inverse projection to revise the geometry shift induced by the vertical speed. Simulation examples are used to verify the proposed GMTI scheme.Jiusheng HanYunhe CaoWenhua WuYang WangTat-Soon YeoShuai LiuFengfei WangMDPI AGarticlechirp Fourier transform (CFT)clutter suppressionground moving target indication (GMTI)hypersonic vehicle (HSV)synthetic aperture radar (SAR)ScienceQENRemote Sensing, Vol 13, Iss 4431, p 4431 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	chirp Fourier transform (CFT) clutter suppression ground moving target indication (GMTI) hypersonic vehicle (HSV) synthetic aperture radar (SAR) Science Q
spellingShingle	chirp Fourier transform (CFT) clutter suppression ground moving target indication (GMTI) hypersonic vehicle (HSV) synthetic aperture radar (SAR) Science Q Jiusheng Han Yunhe Cao Wenhua Wu Yang Wang Tat-Soon Yeo Shuai Liu Fengfei Wang Robust GMTI Scheme for Highly Squinted Hypersonic Vehicle-Borne Multichannel SAR in Dive Mode
description	While there are recent researches on hypersonic vehicle-borne multichannel synthetic aperture radar in ground moving target indication (HSV-MC-SAR/GMTI), this article, which specifically explores a robust GMTI scheme for the highly squinted HSV-MC-SAR in dive mode, is novel. First, an improved equivalent range model (IERM) for stationary targets and GMTs is explored, which enjoys a concise expression and therefore offers the potential to simplify the GMTI process. Then, based on the proposed model, a robust GMTI scheme is derived in detail, paying particular attention to Doppler ambiguity arising from the high-speed and high-resolution wide-swath. Furthermore, it retrieves the accurate two-dimensional speeds of GMTs and realizes the satisfactory performance of clutter rejection and GMT imaging, generating the matched beamforming and enhancing the GMT energy. Finally, it applies the inverse projection to revise the geometry shift induced by the vertical speed. Simulation examples are used to verify the proposed GMTI scheme.
format	article
author	Jiusheng Han Yunhe Cao Wenhua Wu Yang Wang Tat-Soon Yeo Shuai Liu Fengfei Wang
author_facet	Jiusheng Han Yunhe Cao Wenhua Wu Yang Wang Tat-Soon Yeo Shuai Liu Fengfei Wang
author_sort	Jiusheng Han
title	Robust GMTI Scheme for Highly Squinted Hypersonic Vehicle-Borne Multichannel SAR in Dive Mode
title_short	Robust GMTI Scheme for Highly Squinted Hypersonic Vehicle-Borne Multichannel SAR in Dive Mode
title_full	Robust GMTI Scheme for Highly Squinted Hypersonic Vehicle-Borne Multichannel SAR in Dive Mode
title_fullStr	Robust GMTI Scheme for Highly Squinted Hypersonic Vehicle-Borne Multichannel SAR in Dive Mode
title_full_unstemmed	Robust GMTI Scheme for Highly Squinted Hypersonic Vehicle-Borne Multichannel SAR in Dive Mode
title_sort	robust gmti scheme for highly squinted hypersonic vehicle-borne multichannel sar in dive mode
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/bef95a8fa9cc445cad03dfbf6f354051
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Robust GMTI Scheme for Highly Squinted Hypersonic Vehicle-Borne Multichannel SAR in Dive Mode

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