摘要
建立了可受变化干扰源激发的阵列天线和天线罩系统分析模型,分别通过阵列天线接收到的干扰源的辐射功率以及阵列输入矩阵的相关矩阵特征值分布两种方案,对天线罩的影响效应进行了评估。结果表明,天线罩的存在对阵列天线的自适应性能明显降低。采用物理光学法分析了天线罩存在时天线阵的方向图,并利用闪烁瓣的观点对其结论进行了解释。
A model for analyzing the performance of an array antenna and radome system illuminated by variable jammer sources is presented in this paper. The effects of the radome on a modern phased array radar antenna is analyzed by two approaches the radiation power of jammer sources received by array and the eigenvalue of input array covariance matrix. The pattern of array antenna coupled with radome is calculated via the physical optics method. The reduction of performance of the adaptive array with the presence of the radome is detailed discussed in the view point of flashlobes concept.
出处
《电波科学学报》
EI
CSCD
北大核心
2008年第2期296-299,共4页
Chinese Journal of Radio Science
基金
国防基金(51435100104ZS0502)
关键词
天线罩
自适应阵列天线
物理光学法
相关矩阵
自由度
radome
adaptive array antenna
physical optics
correlation matrix
degree of freedom
