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Multi-View Tensor Sparse Representation Model for SAR Target Recognition
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DOI：10.1109/ACCESS.2019.2910212.png)
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Abstract
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The local structure feature of the target in synthetic aperture radar (SAR) image and the inner correlation among multiple SAR images of the same target can effectively improve the recognition performance. In order to utilize these two kinds of information, we propose the multi-view tensor sparse representation (MTSR) model for SAR target recognition. In the proposed model, the SAR image is treated as tensor and represented by the dictionaries on each dimension of the image and corresponding sparse representation coefficient tensor (SRCT). For multi-view SAR images of one target, we design the proposed model by letting the SRCTs of those images have the same structure, which means that the non-zero elements of those SRCTs have the same coordinates. In order to solve the proposed model, we propose the joint tensor orthogonal matching pursuit (JT-OMP) algorithm to calculate the SRCTs of multiple views. JT-OMP ensures that all the SRCTs have the same structure by looking for the atoms of dictionaries that can contribute the total maximum energy for all multi-view tensors in every iteration. To achieve recognition, we construct two dictionaries for each class and compare the total sparse representation error of multi-view SAR images in each class. The experiments conducted on the moving and stationary target acquisition recognition database (MSTAR) verify the performance of the proposed algorithm.
Keywords:
Synthetic aperture radar
automatic target recognition
sparse representation
tensor
multi-view
orthogonal matching pursuit
local structure
inner correlation
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