基于天线空域极化特性的虚拟极化接收技术  

Virtual polarization receiver based on the spatial polarization characteristics of antenna

作　　者：李金梁[1] 罗佳[1] 常宇亮[1] 戴幻尧[1] 李永祯[1] 王雪松[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《电波科学学报》2009年第3期389-393,共5页Chinese Journal of Radio Science

基　　金：国家自然科学基金重点项目(60736006);装备预先研究项目(51309060305);湖南省教育厅资助科研项目

摘　　要：提出了一种基于天线空域极化特性的雷达虚拟极化接收方法,可使现有的单极化雷达具有一定的变极化能力。结合偏馈抛物面天线空域极化特性的计算结果,给出了修正的雷达观测方程,提出了虚拟极化接收的方法,对雷达虚拟极化接收的性能进行了分析,指出了等效噪声电平是接收极化的函数,并给出了具体的表达式,最后基于雷达虚拟极化接收提出了PIN最小化极化滤波方法,使干扰加噪声的能量最小,仿真结果表明:虚拟极化接收技术在INR较大时具有较好的抗干扰效果。Based on the spatial polarization characteristics of antenna, the idea of virtual polarization receiver of radar was brought forward. It makes the single polarization radar possess the variable polarization ability. Combining with calculation results of spatial polarization characteristics of off-set parabolic reflector antenna, the modified radar reserve equation is presented. The virtual polarization receiving method is given. It shown that the equivalent noise voltage is the function of receiving polarization and the concrete representation is derived. The rain-PIN polarization filter is proposed. The simulation results show that the performance of the algorithm to suppress interference is better with relative higher INR.

关 键 词：天线空域极化特性 最小二乘估计 虚拟极化接收 干扰抑制 

分 类 号：TN957.2[电子电信—信号与信息处理]