一种多极化SAR舰船目标与方位向模糊鉴别方法

周伟; 孙艳丽; 许成斌; 关键

doi:10.12000/JR14147

一种多极化SAR舰船目标与方位向模糊鉴别方法

DOI: 10.12000/JR14147

1.
(海军航空工程学院电子信息工程系烟台 264001)
2.
(海军航空工程学院基础实验部烟台 264001)

基金项目:

国家自然科学基金(61201445, 61179017)和国防预研基金资助课题

详细信息

作者简介:
周伟(1980-)，男，湖北黄石人，2011年于海军航空工程学院获得博士学位，现为海军航空工程学院信息融合研究所讲师，主要研究方向为多源信息融合、侦察图像处理、目标检测与识别。E-mail:yeaweam@gmail.com 孙艳丽(1982-)，女，山东莱阳人，海军航空工程学院基础实验部，工程师，主要研究方向为信号处理。E-mail:sunyanli195710@163.com 许成斌(1990-)，男，黑龙江伊春人，2012年获哈尔滨工程大学学士学位，同年进入海军航空工程学院攻读硕士学位，研究方向为遥感图像解译与分析。E-mail:xuchengbin333@126.com 关键(1968-)，男，辽宁锦州人，海军航空工程学院电子信息工程系主任，教授，博士生导师，主要研究方向为雷达目标检测与跟踪、侦察图像处理和信息融合。E-mail:guanjian96@tsinghua.org.cn

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出版历程
- 收稿日期: 2014-12-03
- 修回日期: 2015-03-16
- 网络出版日期: 2015-02-28

A Method for Discrimination of Ship Target and Azimuth Ambiguity in Multi-polarimetric SAR Imagery

1.
(Department of Electronic and Information Engineering, Naval Aeronautical and Astronautical University, Yantai 264001, China)
2.
(Department of Basic Experiment, Naval Aeronautical and Astronautical University, Yantai 264001, China)

摘要

摘要: 针对SAR图像舰船目标检测过程中存在方位向模糊造成虚警的问题，该文设计了一种基于改进的H//WishartH?非监督分类的多极化SAR图像舰船与方位向模糊鉴别方法。该方法首先提取目标散射回波峰值区域，以该区域的H//Wishart分类结果为初始聚类中心，利用复Wishart分布的最大似然分类器改善分类结果，通过对比分析各散射类型区域的结构鉴别舰船目标和方位向模糊。通过实验表明该方法能有效地鉴别舰船目标与方位向模糊，减少SAR舰船目标检测过程中存在的虚警。
- 多极化SAR图像 /
- 方位向模糊 /
- 非监督分类 /
- 舰船检测
Abstract: Aiming to remove the false alarm caused by azimuth ambiguity in SAR imagery during the process of ship target detection, a method based on the improved H//Wishart unsupervised classification is proposed. First, the scattering echo peak zone of target is extracted and theH/ classification results are treated as the initial cluster centers. Second, the ship target and azimuth ambiguity are identified by comparing and analyzing the structure of each region. It is showed by experiment that the method can detect ships based on the azimuth ambiguity; thus the false alarm rate in SAR-based ship detection is reduced.
- Multi-polarimetric SAR imagery /
- Azimuth ambiguity /
- Unsupervised classification /
- Ship detection

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参考文献(12)

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