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

被引：4

作者：

Ling, Qing ^{[1
]}

Ma, Jingtao ^{[2
]}

Xia, Xiang-Gen ^{[3
]}

Huang, Penghui ^{[1
]}

Liu, Yanyang ^{[4
]}

Deng, Yunkai ^{[5
]}

Liu, Xingzhao ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, Shanghai 200240, Peoples R China

[2] Innovat Acad Microsatellites CAS, Shanghai 201203, Peoples R China

[3] Univ Delaware, Dept Elect & Comp Engn, Newark, DE 19716 USA

[4] Shanghai Inst Satellite Engn, Shanghai 201109, Peoples R China

[5] Chinese Acad Sci, Aerosp Informat Res Inst, Space Microwave Remote Sensing Syst Dept, Beijing 100094, Peoples R China

来源：

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2023年 / 20卷

关键词：

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

D O I：

10.1109/LGRS.2023.3319709

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

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.

引用

页数：5

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