摘要
研究在冲击波作用下,赋形双弯曲反射面变形对天线辐射特性的影响.利用物理光学法对双弯曲反射面雷达天线的辐射方向性进行了建模和分析,将反射面完好时的计算结果与测试结果进行比较,其结果较为一致.在此基础上,重点研究了天线反射面变形后天线辐射特性随变形量、变形位置和变形面积的变化.计算结果表明,反射面的变形对水平面方向图影响较大,对垂直面方向图的影响很小.
The influence of distortion of a shaped beam reflector on the radiation characteristics of an antenna under shock wave is studied. The far field of a shaped reflector antenna is modeled and analyzed based on the physical optics (PO) method. Results of measurement and calculation are compared when the shaped reflector is not distorted, and good agreement is obtained. The radiation characteristics of the antenna are studied when the shaped beam reflector are distorted by shock waves, including the value the location and the area of distortion. The results show that the distortion affects chiefly on the horizontal radiation patterns, and less on the vertical ones.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2004年第6期541-544,558,共5页
Transactions of Beijing Institute of Technology
基金
国家部委预研项目(2003005)
关键词
赋形反射面变形
物理光学法
辐射方向图
distortion of shaped beam reflector
physical optics method
radiation patterns
