摘要
极化是雷达目标具有的特性之一。以电磁散射计算仿真的圆锥形弹头模型、球形和圆柱形诱饵模型为研究对象,在极化不变量理论基础上对这些简单目标的极化特性进行了试验分析研究,提出了一种新的组合极化不变量特征(功率矩阵迹与行列式的比值)用于雷达目标识别,并给出了其对应实际的物理意义。文中以SVM为分类器,提出基于功率矩阵迹、去极化系数和功率矩阵迹与行列式的比值特征进行分类识别,结果表明,该方法可以有效地将弹头和诱饵进行分类识别。
Polarization is one of the main target features. This paper uses electromagnetic scattering computation to model cone warhead, bait（sphere and column）. Experiment analysis of the invariant proper- ties of the polarization scattering matrix（IPPSMs） for the simple targets is given. A new IPPSM（the ratio for trace of power scattering matrix to determinant） is first presented and its physical characteristic is also given. SVM is used as classifier, and trace of power scattering matrix, depolarization and TPSMD are presented for target classification. The recognition results validate the effectiveness of theoretical analysis.
出处
《雷达科学与技术》
2013年第2期165-172,共8页
Radar Science and Technology
关键词
雷达目标识别
极化
功率矩阵迹
去极化系数
功率矩阵迹与行列式的比值
radar target recognition
polarization
trace of power scattering matrix
depolarization
trace of power scattering matrix to determinant
