A Fast Radial Scanned Near-Field 3-D SAR Imaging System and the Reconstruction Method (SCI)

CORC > 寒区旱区环境与工程研究所 > 中科院寒区旱区环境与工程研究所（未分类） > 期刊论文

	A Fast Radial Scanned Near-Field 3-D SAR Imaging System and the Reconstruction Method (SCI)
	Li Z.; Wang J.; Wu J. J.; Liu Q. H.
刊名	Ieee Transactions on Geoscience and Remote Sensing
	2015
卷号	53 期号:3 页码:1355-1363
英文摘要	This paper presents a near-field 3-D synthetic aperture radar (SAR) imaging system for which the 2-D aperture is radially scanned. Compared to the current SAR imaging systems, the proposed system has several advantages such as quick data collection, full 360. inspection of target, and simple image formation processing. However, in radial scan, the samples do not fall on a Cartesian grid, which prevents us from using the fast Fourier transform (FFT) to form SAR image without calling for interpolation. In this paper, the 2-D nonuniform FFT (NUFFT) is used for dealing with the problem. After 2-D NUFFT of the radial sampled data, the 3-D reflectivity image can be efficiently reconstructed by using the 3-D version of the range migration algorithm. The Stolt mapping has been implemented implicitly by another 1-D NUFFT to reduce the artifacts caused by the conventional interpolation processing. In addition, to alleviate the data sampling burden, a compressed 2-D slow-time sampling strategy is also discussed. Finally, the proposed Rad-SAR system and the imaging method are demonstrated using near-field wideband simulation data.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.casnw.net/handle/362004/27324]
专题	寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文
推荐引用方式 GB/T 7714	Li Z.,Wang J.,Wu J. J.,et al. A Fast Radial Scanned Near-Field 3-D SAR Imaging System and the Reconstruction Method (SCI)[J]. Ieee Transactions on Geoscience and Remote Sensing,2015,53(3):1355-1363.
APA	Li Z.,Wang J.,Wu J. J.,&Liu Q. H..(2015).A Fast Radial Scanned Near-Field 3-D SAR Imaging System and the Reconstruction Method (SCI).Ieee Transactions on Geoscience and Remote Sensing,53(3),1355-1363.
MLA	Li Z.,et al."A Fast Radial Scanned Near-Field 3-D SAR Imaging System and the Reconstruction Method (SCI)".Ieee Transactions on Geoscience and Remote Sensing 53.3(2015):1355-1363.