Multiple kernel learning via orthogonal neighborhood preserving projection and maximum margin criterion method for synthetic aperture radar target recognition

Cong Li; Weimin Bao; Luping Xu; Hua Zhang; Yan Bo

doi:10.1117/1.OE.57.5.053105

10 May 2018 Multiple kernel learning via orthogonal neighborhood preserving projection and maximum margin criterion method for synthetic aperture radar target recognition

Cong Li, Weimin Bao, Luping Xu, Hua Zhang, Yan Bo

Author Affiliations +

Funded by: National Natural Science Foundation of China (NSFC)

Optical Engineering, Vol. 57, Issue 5, 053105 (May 2018). https://doi.org/10.1117/1.OE.57.5.053105

Abstract

A multiple kernel learning (MKL) method is proposed for synthetic aperture radar (SAR) target recognition. The goal of the proposed MKL is to learn an optimal combined kernel to reduce the dimensionality of SAR images and maximize the separability of SAR targets. Orthogonal neighborhood-preserving projection (ONPP) can effectively reduce the sample dimensionality and maximally preserve the structure information but without the discrimination. On the contrary, maximum margin criterion (MMC) has the ability of classification but without the ability of preserving structure information. To realize the proposed goal, ONPP and MMC are combined within the graph embedding framework, where an optimal projective direction and basic kernel weights are automatically learned. Based on the obtained projection direction and kernel weights, all basic kernels are projected to generate the composite kernel. Moreover, the projection and transformation operations are based on three-dimensional (3-D) data generated by a series of basic kernel matrices, which can completely preserve the structure information in reproducing kernel Hilbert space. Numerical experiments on MSTAR dataset indicate that the proposed MKL method can effectively reduce the dimensionality of SAR images and achieve the outstanding recognition performance when compared with several state-of-the-art algorithms.

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Cong Li, Weimin Bao, Luping Xu, Hua Zhang, and Yan Bo "Multiple kernel learning via orthogonal neighborhood preserving projection and maximum margin criterion method for synthetic aperture radar target recognition," Optical Engineering 57(5), 053105 (10 May 2018). https://doi.org/10.1117/1.OE.57.5.053105

Received: 31 October 2017; Accepted: 5 April 2018; Published: 10 May 2018

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KEYWORDS

Synthetic aperture radar

Target recognition

Optical engineering

Detection and tracking algorithms

Composites

Matrices

Lithium

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