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| SAR Target Recognition Method Based on Orthogonal Subspace of Samples |
| Han Zheng; Su Zhi-gang; Han Ping; Wu Ren-biao |
| Tianjin Key Laboratory for Advanced Signal Processing, Civil Aviation University of China, Tianjin 300300,China |
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Abstract To identify with the target images obtained by Synthetic Aperture Radar (SAR), those subspace-based methods for Automatic Target Recognition (ATR) are usually based on the range subspace of the samples. When some similar targets need to be distinguished, the corresponding templates are poorly separable because the range subspaces of each other have a big intersection. A method for SAR target ATR is proposed in this paper, which considers the orthogonal complement subspace of the samples as the projection subspaces. Consequently, the difference, between the projections of the different type targets on the projection subspace, is enlarged, which significantly improves the identification performance. Experimental results show that the proposed method is superior to the other similar methods.
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Received: 14 November 2008
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Corresponding Authors:
Su Zhi-gang
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2009, Vol. 31 
