近地架设对数周期天线阵干扰最优激励分析  

Analysis of Optimal Jamming Excitation of Near-ground LPDA Array

作　　者：范启蒙 尹成友[1] 

机构地区：[1]电子工程学院脉冲功率激光技术国家重点实验室,安徽合肥230037

出　　处：《通信对抗》2016年第1期38-42,共5页Communication Countermeasures

基　　金：总装备部预研基金(51333020201)

摘　　要：利用分层媒质空域格林函数构建了混合位电场积分方程对对数周期天线阵列进行矩量法分析。采用二级离散复镜像方法计算空域格林涉及的Sommerfeld积分;采用混合方法加速了阻抗矩阵元素的填充;基于驻相法和Hankel函数的大宗量近似实现辐射场计算;利用网络理论,以指定接收方向最大干扰功率为准则,求解了天线阵的最优激励,通过控制激励的相位实现了在一定角度范围内的波束扫描。The Green function in stratified media is exploited to construct mixed-potential electric integral e- quation, with which the MoM analysis of a LPDA array is implemented. Firstly two-level DCIM is adopted to evaluate the Sommerfeld integral involved in space-domain Green function, and then a hybrid method is em- ployed to accelerate impedance matrix filling. After that based on the stationary phase method and approxima- tion of Hankel function in large self-variable, the radiated field is calculated. Finally taking advantage of network theory, optimal excitation is obtained in the principle of maximum jamming power in the receiving direction, in addition, the beam can be scanned in certain scale of angles by changing excitation phases.

关 键 词：对数周期天线阵列 混合位积分方程 矩量法 最优激励 

分 类 号：TN82[电子电信—信息与通信工程]