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An evident sidelobe control method based on NSCT for ship target in SAR images

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Journal of Electronics (China)

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 high-pass frequency subbands. Experimental results on RADARSAT-2 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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Authors and Affiliations

  1. School of Information Science & Technology, University of Science and Technology of China, Hefei, 230027, China

    Xueying Li, Dong Yin, Rong Zhang & Kui Wang

Authors
  1. Xueying Li
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  2. Dong Yin
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  3. Rong Zhang
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  4. Kui Wang
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Corresponding author

Correspondence to Dong Yin.

Additional information

Supported by the National Basic Research Program of China (973 Program) (No. 2010CB731900).

Communication author: Yin Dong, born in 1965, male, Master, Associate Professor.

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Li, X., Yin, D., Zhang, R. et al. An evident sidelobe control method based on NSCT for ship target in SAR images. J. Electron.(China) 28, 419–426 (2011). https://doi.org/10.1007/s11767-012-0708-z

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  • DOI: https://doi.org/10.1007/s11767-012-0708-z

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