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Title of Journal: J ElectronChina

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Abbravation: Journal of Electronics (China)

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SP Science Press

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DOI

10.1016/0014-5793(74)80308-x

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1993-0615

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An evident sidelobe control method based on NSCT f

Authors: Xueying Li Dong Yin Rong Zhang Kui Wang
Publish Date: 2012/03/08
Volume: 28, Issue: 4-6, Pages: 419-426
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Abstract

Evident sidelobe on faint ship target seriously affects the accuracy of the target segmentation in Synthetic Aperture Radar SAR images To avoid this problem a novel sidelobe control method based on NonSubsampled Contourlet Transform NSCT for ship targets in SAR images is presented in this paper This method enhances the SAR images in NSCT domain based on target azimuth estimation and then inhibits the sidelobe directionally in NSCT highpass frequency subbands Experimental results on RADARSAT2 images demonstrate that the proposed method can not only reduce the strong sidelobes effectively but also enhance the intensity of the objects successfully Therefore it gives a good segmentation result on the dark ship images with strong sidelobe and enhances the detection rate on these targets

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