考虑天线极化特性的ASLC系统性能分析  

Performance Analysis of ASLC System When Taking Antenna Polarization into Consideration

作　　者：陶建锋[1] 李兴成[1] 黄学宇[1] 

机构地区：[1]空军工程大学导弹学院,陕西三原713800

出　　处：《空军工程大学学报（自然科学版）》2010年第2期38-41,共4页Journal of Air Force Engineering University(Natural Science Edition)

摘　　要：交叉极化响应使得雷达的天线方向图具有复杂的极化结构,为了研究雷达天线极化特性对天线自适应旁瓣对消系统性能的影响,在干扰为任意极化的情况下,从主辅通道幅相特性出发,分析了天线极化特性对自适应旁瓣对消系统主辅通道幅相特性的影响,进而研究了极化干扰条件下的自适应旁瓣对消系统工作性能。仿真分析表明,由于主辅天线极化特性的不一致,最终将导致自适应旁瓣对消系统通道幅相不一致,特别是当干扰方实施交叉极化干扰时,主辅通道幅相不一致最严重,系统工作性能显著下降,干扰对消比最差。因此,为了得到较好的旁瓣对消效果,除了对自适应旁瓣对消系统通道幅相特性有一定的要求以外,对于雷达天线的极化特性也应有所要求。Based on the characteristics of amplitude and phase between the main and auxiliary channels, the effects of antenna polarization on Adaptive Side - lobe Canceller under arbitrary polarization interference are analyzed. The polarization difference between the antennas will finally result in the amplitude and phase errors, the most serious eiTors OCC Adaptive amplitude ur with cross -polarization interference; the cancellation ratio is also the worst. For good performance of Side- lobe Canceller, the antenna polarization performance must be designed well besides the channel and phase.

关 键 词：自适应旁瓣对消器 交叉极化 幅相不一致 干扰对消 

分 类 号：TN972[电子电信—信号与信息处理]