Frequency-Domain Backprojection Algorithm for Synthetic Aperture Radar Imaging

被引：20

作者：

Li, Zhe ^{[1
]}

Wang, Jian ^{[2
]}

Liu, Qing Huo ^{[3
]}

机构：

[1] Inner Mongolia Univ, Res Ctr Hist Geog Mongolia Plateau, Hohhot 010021, Peoples R China

[2] Chinese Acad Sci, Lab Remote Sensing & Geospatial Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China

[3] Duke Univ, Dept Elect & Comp Engn, Durham, NC 27708 USA

来源：

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2015年 / 12卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Backprojection (BP); frequency-domain back-projection (FDBP); synthetic aperture radar (SAR); RADIALLY PERIODIC IMAGES; FOURIER-SPECTRUM; SAR;

D O I：

10.1109/LGRS.2014.2366156

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：

A new frequency-domain backprojection method for processing synthetic aperture radar (SAR) data is presented. It forms SAR images by backprojecting the spectrum of the radar echo into the image wavenumber domain and is capable of fully correcting wavefront curvature and handling a general aperture geometry. From each reconstructed spectral pixel, information about the entire scene can be obtained, allowing the formation of interim lower resolution images during the processing. In addition, the method allows for an arbitrary sampling of the image spectrum. It forms SAR images by backprojecting the spectrum of the radar echo into the image wavenumber domain. Processing of simulated and experimental ultrawideband/widebeam SAR raw data demonstrates the efficacy of this new method.

引用

页码：905 / 909

页数：5

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