电扫偶极子相控阵天线的空域极化特性分析

电扫偶极子相控阵天线的空域极化特性分析

内容简介：推导了偶极子线性阵列和平面相控阵天线在空域波束电扫时辐射场的极化特性,建立了数学模型.计算结果和仿真分析表明:偶极子相控阵天线辐射场在空域扫描各个波位的极化特性并不一致,是具有一定差异的,当待测目标的方向偏离天线电轴方向时,所接收到的电波极化状态也会随偏离电轴的方向和仰角而改变.该结论对于现代电子战中相控阵天线系统的精确建模与仿真具有重要意义,对于研究和利用天线的极化特性进行雷达极化抗干扰技术是非常必要的.

Abstract：The spatial polarization characteristic of electromagnetic field radiated by linear dipole array and planar-array antenna scanning in different direction was derived and modeled theoretically and mathematical in this paper. The calculation results and simulation analysis show that the polarization properties of phased arrays in various beam positions are diverse, and the polarization state of EM wave will change with the azimuth and elevation of the electrical boresight when the target direction deviates from the antenna boresight direction. The conclusion is of significance to high-precision modeling and simulation for phased array antennas, and is also important for anti-interference by making use of polarization information.

作者：戴幻尧, 李永祯, 陈志杰, 王雪松, 肖顺平,

关键词：阵列天线, 相控阵, 空域极化特性, 波束电扫,