摘要
极化特性是雷达目标散射回波的重要特性之一,极化特征能够解析目标的粗细、大小、对称性等信息。随着雷达极化测量技术的逐步成熟,基于极化特征的雷达目标识别日益引起国内外学术界的高度重视。以电磁散射计算仿真的飞机模型为研究对象,在极化不变量理论基础上对这些飞机目标的极化特性进行了试验分析研究,以SVM为分类器,通过功率矩阵的迹和去极化系数可以实现对三个目标的区分。结果表明,该方法可以有效地将三个目标进行分类识别。
Polarization is one of the main target features. Polarization feature can reflect the thickness, size and symmetry of the target. With the improvement of polarization measurement technology, radar target recognition based on the polarization feature attracts many scholars' attention. This paper uses electromagnetic scattering computation to model aircrafts. Experiment analysis of the invariant properties of the polarization scattering matrix for the targets is given. SVM is used as a classifier. The trace of power scattering matrix and the depolarization coefficient are presented for target classification. The recognition results validate the effectiveness of theoretical analysis.
出处
《雷达科学与技术》
北大核心
2016年第1期39-44,53,共7页
Radar Science and Technology
关键词
雷达目标识别
极化散射矩阵
极化特征
极化不变量
radar target recognition
polarization scattering matrix
polarization feature
polarization invariant