Fast Backprojection Algorithm for Bistatic SAR Imaging

被引：58

作者：

Shao, Yun Feng ^{[1
]}

Wang, Robert ^{[2
]}

Deng, Yun Kai ^{[2
]}

Liu, Y. ^{[2
]}

Chen, Runpu ^{[1
]}

Liu, Gang ^{[1
]}

Loffeld, Otmar ^{[3
]}

机构：

[1] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China

[2] Chinese Acad Sci, Inst Elect, Dept Space Microwave Remote Sensing Syst, Beijing 100190, Peoples R China

[3] Univ Siegen, Ctr Sensorsyst ZESS, D-57068 Siegen, Germany

来源：

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2013年 / 10卷 / 05期

关键词：

Bistatic synthetic aperture radar; computational complexity; fast backprojection algorithm (FBPA); graphics processing unit (GPU);

D O I：

10.1109/LGRS.2012.2230243

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 fast backprojection algorithm (FBPA) is proposed for bistatic synthetic aperture radar imaging. For range compression, the signal recorded by the synchronization channel of the receiver on the ground is used as a matched filter to compress the echo signal. This method can reduce the requirements of satellite-orbit measurement and synchronization precision. For azimuth compression, a secondary phase correction is implemented to reduce the effect caused by the approximation involved in the FBPA. The computational complexity of the proposed algorithm is O(N-2.5). The proposed algorithm is applied in a graphics processing unit and verified by simulation and real raw data.

引用

页码：1080 / 1084

页数：5

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