A fast SAR imaging method for ground moving target using a second-order WVD transform

Penghui Huang; Guisheng Liao; Zhiwei Yang; Xiang Gen Xia; Jing Tao Ma; Xuepan Zhang

doi:10.1109/TGRS.2015.2490582

A fast SAR imaging method for ground moving target using a second-order WVD transform

Penghui Huang, Guisheng Liao, Zhiwei Yang, Xiang Gen Xia, Jing Tao Ma, Xuepan Zhang

Research output: Contribution to journal › Article › peer-review

99 Citations (Scopus)

Abstract

In synthetic aperture radar (SAR) imaging of a ground moving target, long-time coherent integration may effectively improve the imaging quality, whereas the imaging performance may severely degrade due to the range migration and the Doppler frequency migration. In this paper, a novel motion parameter estimation method named second-order Wigner-Ville distribution (SoWVD) transform is proposed, and then, a new SAR imaging method based on the SoWVD for a ground moving target is developed. As a modified Wigner-Ville distribution method, the SoWVD method can estimate the motion parameter without the search procedure, which achieves motion parameter estimation by Fourier transform operations in the 2-D frequency plane with respect to the slow time and the delay time. In addition, it can effectively recognize the cross terms based on multiple symmetrical properties of the peaks in the 2-D frequency domain. Both simulated and real data processing results are presented to validate the proposed imaging method.

Original language	English
Article number	7314927
Pages (from-to)	1940-1956
Number of pages	17
Journal	IEEE Transactions on Geoscience and Remote Sensing
Volume	54
Issue number	4
DOIs	https://doi.org/10.1109/TGRS.2015.2490582
Publication status	Published - Apr 2016
Externally published	Yes

Keywords

Doppler frequency migration
Ground moving target imaging (GMTIm)
Keystone transform
Motion parameter estimation
Second-order Wigner-Ville distribution (SoWVD)
Synthetic aperture radar (SAR)

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10.1109/TGRS.2015.2490582

Cite this

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title = "A fast SAR imaging method for ground moving target using a second-order WVD transform",

abstract = "In synthetic aperture radar (SAR) imaging of a ground moving target, long-time coherent integration may effectively improve the imaging quality, whereas the imaging performance may severely degrade due to the range migration and the Doppler frequency migration. In this paper, a novel motion parameter estimation method named second-order Wigner-Ville distribution (SoWVD) transform is proposed, and then, a new SAR imaging method based on the SoWVD for a ground moving target is developed. As a modified Wigner-Ville distribution method, the SoWVD method can estimate the motion parameter without the search procedure, which achieves motion parameter estimation by Fourier transform operations in the 2-D frequency plane with respect to the slow time and the delay time. In addition, it can effectively recognize the cross terms based on multiple symmetrical properties of the peaks in the 2-D frequency domain. Both simulated and real data processing results are presented to validate the proposed imaging method.",

keywords = "Doppler frequency migration, Ground moving target imaging (GMTIm), Keystone transform, Motion parameter estimation, Second-order Wigner-Ville distribution (SoWVD), Synthetic aperture radar (SAR)",

author = "Penghui Huang and Guisheng Liao and Zhiwei Yang and Xia, {Xiang Gen} and Ma, {Jing Tao} and Xuepan Zhang",

note = "Publisher Copyright: {\textcopyright} 1980-2012 IEEE.",

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AU - Huang, Penghui

AU - Liao, Guisheng

AU - Yang, Zhiwei

AU - Xia, Xiang Gen

AU - Ma, Jing Tao

AU - Zhang, Xuepan

PY - 2016/4

Y1 - 2016/4

N2 - In synthetic aperture radar (SAR) imaging of a ground moving target, long-time coherent integration may effectively improve the imaging quality, whereas the imaging performance may severely degrade due to the range migration and the Doppler frequency migration. In this paper, a novel motion parameter estimation method named second-order Wigner-Ville distribution (SoWVD) transform is proposed, and then, a new SAR imaging method based on the SoWVD for a ground moving target is developed. As a modified Wigner-Ville distribution method, the SoWVD method can estimate the motion parameter without the search procedure, which achieves motion parameter estimation by Fourier transform operations in the 2-D frequency plane with respect to the slow time and the delay time. In addition, it can effectively recognize the cross terms based on multiple symmetrical properties of the peaks in the 2-D frequency domain. Both simulated and real data processing results are presented to validate the proposed imaging method.

AB - In synthetic aperture radar (SAR) imaging of a ground moving target, long-time coherent integration may effectively improve the imaging quality, whereas the imaging performance may severely degrade due to the range migration and the Doppler frequency migration. In this paper, a novel motion parameter estimation method named second-order Wigner-Ville distribution (SoWVD) transform is proposed, and then, a new SAR imaging method based on the SoWVD for a ground moving target is developed. As a modified Wigner-Ville distribution method, the SoWVD method can estimate the motion parameter without the search procedure, which achieves motion parameter estimation by Fourier transform operations in the 2-D frequency plane with respect to the slow time and the delay time. In addition, it can effectively recognize the cross terms based on multiple symmetrical properties of the peaks in the 2-D frequency domain. Both simulated and real data processing results are presented to validate the proposed imaging method.

KW - Doppler frequency migration

KW - Ground moving target imaging (GMTIm)

KW - Keystone transform

KW - Motion parameter estimation

KW - Second-order Wigner-Ville distribution (SoWVD)

KW - Synthetic aperture radar (SAR)

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JF - IEEE Transactions on Geoscience and Remote Sensing

IS - 4

M1 - 7314927

ER -

A fast SAR imaging method for ground moving target using a second-order WVD transform

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Keywords

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