A Novel Airborne SAR Imaging Method Based on Modified Omega-K Algorithm

Qing Ling; Jingtao Ma; Xiang Gen Xia; Penghui Huang; Yanyang Liu; Yunkai Deng; Xingzhao Liu

doi:10.1109/LGRS.2023.3319709

A Novel Airborne SAR Imaging Method Based on Modified Omega-K Algorithm

Qing Ling, Jingtao Ma^*, Xiang Gen Xia, Penghui Huang, Yanyang Liu, Yunkai Deng, Xingzhao Liu

^*Corresponding author for this work

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

7 Citations (Scopus)

Abstract

In this letter, a high-resolution synthetic aperture radar (SAR) imaging algorithm based on a modified omega-K algorithm is proposed. The proposed algorithm first multiplies the reference signal. Then, the azimuth nonstationary phase error (ANSPE) is considered after performing the interpolation process based on the generalized frequency scale transformation. Finally, a well-focused SAR image can be obtained after compensating the ANSPE and correcting the residual spatial variant range migration by utilizing the range segmentation technique. The simulation results of point targets and the real-measured airborne high-resolution SAR data simultaneously verify the effectiveness and feasibility of the proposed algorithm.

Original language	English
Article number	4011605
Journal	IEEE Geoscience and Remote Sensing Letters
Volume	20
DOIs	https://doi.org/10.1109/LGRS.2023.3319709
Publication status	Published - 2023
Externally published	Yes

Keywords

Airborne synthetic aperture radar (SAR) imaging
azimuth nonstationary phase error (ANSPE)
generalized frequency scale transformation
modified omega-K

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10.1109/LGRS.2023.3319709

Cite this

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title = "A Novel Airborne SAR Imaging Method Based on Modified Omega-K Algorithm",

abstract = "In this letter, a high-resolution synthetic aperture radar (SAR) imaging algorithm based on a modified omega-K algorithm is proposed. The proposed algorithm first multiplies the reference signal. Then, the azimuth nonstationary phase error (ANSPE) is considered after performing the interpolation process based on the generalized frequency scale transformation. Finally, a well-focused SAR image can be obtained after compensating the ANSPE and correcting the residual spatial variant range migration by utilizing the range segmentation technique. The simulation results of point targets and the real-measured airborne high-resolution SAR data simultaneously verify the effectiveness and feasibility of the proposed algorithm.",

keywords = "Airborne synthetic aperture radar (SAR) imaging, azimuth nonstationary phase error (ANSPE), generalized frequency scale transformation, modified omega-K",

author = "Qing Ling and Jingtao Ma and Xia, {Xiang Gen} and Penghui Huang and Yanyang Liu and Yunkai Deng and Xingzhao Liu",

note = "Publisher Copyright: {\textcopyright} 2004-2012 IEEE.",

year = "2023",

doi = "10.1109/LGRS.2023.3319709",

language = "English",

volume = "20",

journal = "IEEE Geoscience and Remote Sensing Letters",

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T1 - A Novel Airborne SAR Imaging Method Based on Modified Omega-K Algorithm

AU - Ling, Qing

AU - Ma, Jingtao

AU - Xia, Xiang Gen

AU - Huang, Penghui

AU - Liu, Yanyang

AU - Deng, Yunkai

AU - Liu, Xingzhao

PY - 2023

Y1 - 2023

N2 - In this letter, a high-resolution synthetic aperture radar (SAR) imaging algorithm based on a modified omega-K algorithm is proposed. The proposed algorithm first multiplies the reference signal. Then, the azimuth nonstationary phase error (ANSPE) is considered after performing the interpolation process based on the generalized frequency scale transformation. Finally, a well-focused SAR image can be obtained after compensating the ANSPE and correcting the residual spatial variant range migration by utilizing the range segmentation technique. The simulation results of point targets and the real-measured airborne high-resolution SAR data simultaneously verify the effectiveness and feasibility of the proposed algorithm.

AB - In this letter, a high-resolution synthetic aperture radar (SAR) imaging algorithm based on a modified omega-K algorithm is proposed. The proposed algorithm first multiplies the reference signal. Then, the azimuth nonstationary phase error (ANSPE) is considered after performing the interpolation process based on the generalized frequency scale transformation. Finally, a well-focused SAR image can be obtained after compensating the ANSPE and correcting the residual spatial variant range migration by utilizing the range segmentation technique. The simulation results of point targets and the real-measured airborne high-resolution SAR data simultaneously verify the effectiveness and feasibility of the proposed algorithm.

KW - Airborne synthetic aperture radar (SAR) imaging

KW - azimuth nonstationary phase error (ANSPE)

KW - generalized frequency scale transformation

KW - modified omega-K

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U2 - 10.1109/LGRS.2023.3319709

DO - 10.1109/LGRS.2023.3319709

M3 - Article

AN - SCOPUS:85173316319

SN - 1545-598X

VL - 20

JO - IEEE Geoscience and Remote Sensing Letters

JF - IEEE Geoscience and Remote Sensing Letters

M1 - 4011605

ER -

A Novel Airborne SAR Imaging Method Based on Modified Omega-K Algorithm

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