一种基于多极化散射机理的极化SAR图像舰船目标检测方法

doi:10.11999/JEIT160204

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Abstract

Considering the shortcoming of detection method based on polarimetric contrast enhanced with single polarimetric scattering mechanism, a PolSAR detection method based on multiple polarimetric mechanisms called Dirichlet Process mixture of Latent Variable SVM (DPLVSVM) is proposed. By assembling a set of local polarimetric detectors that based on single polarimetric scattering mechanism, a global multiple polarimetric scattering mechanisms detector is obtained. With a fully Bayes treatment, DPLVSVM learns the clustering and the local detectors jointly. Taking the advantage of Bayes nonparametric, DPLVSVM handles the model selection problem flexibly. Further, in order to reduce the redundancy of polarimetric feature and improve the model generalization, a model with feature selection, Sparsity-Promoting Dirichlet Process mixture of Latent Variable SVM (SPDPLVSVM), is proposed. Thanks to the conjugate property, the parameters in both of models can be inferred efficiently via the Gibbs sampler. Finally, the proposed models on RADARSAR-2 dataset is implemented to validate their effectiveness.

Key words： Polarimetric SAR Target detection Dirichlet process mixture model Bayes SVM Feature selection

Received: 03 March 2016 Published: 17 October 2016

PACS:

TN958

Fund:

The National Science Fund for Distinguished Young Scholars (61525105), The National Natural Science Foundation of China (61201292, 61322103, 61372132), The Program for New Century Excellent Talents in University (FANEDD-201156), The Natural Science Basic Research Plan in Shaanxi Province of China (2016JQ6048), The Aviation Science Fund (20142081009) and Key Laboratory Fund of RF Integrated Laboratory in Avionics System, Shanghai Aerospace Science and, Technology Innovation Fund (SAST2015009)

Corresponding Authors: CHEN Bo E-mail: bchen@mail.xidian.edu.cn

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	WEN Wei
	CAO Xuefei
	ZHANG Xuefeng
	CHEN Bo
	WANG Yinghua
	LIU Hongwei

Cite this article:

WEN Wei,CAO Xuefei,ZHANG Xuefeng等. PolSAR Ship Detection Method Based on Multiple Polarimetric Scattering Mechanisms[J]. JEIT, 2017, 39(1): 103-109.

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http://jeit.ie.ac.cn/EN/10.11999/JEIT160204 OR http://jeit.ie.ac.cn/EN/Y2017/V39/I1/103

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