一种分析大型阵列天线散射的新方法  

New method for analysis of scattering of the large array antenna

作　　者：袁宏伟[1] 龚书喜[1] 王文涛[1] 

机构地区：[1]西安电子科技大学天线与微波技术重点实验室

出　　处：《西安电子科技大学学报》2010年第1期113-118,共6页Journal of Xidian University

基　　金：重点实验室基金资助项目

摘　　要：引入综合函数矩量法分析大型阵列天线的电磁散射问题.该方法基于求解电磁问题原型,通过对模型的几何和物理结构进行区域分解,并引入等效电流源来计入各区域之间的互耦影响,从而生成综合函数空间.与传统的阻抗矩阵分块操作相比,该方法能够进一步减少储存空间和计算时间,因此利用该方法能够在PC机上有效地分析大型阵列天线的散射问题.通过实际算例与传统矩量法相比较,单站雷达散射截面的误差小于2 dB,证明了该方法的精确度和有效性.The method of the synthetical basis function （SBFS） is introduced to analyze the scattering problem of the large array antennas. Based on the solution of the electromagnetic problems, the method accomplishes regional partition of the geometrical and physical structure of the model and brings in an equivalent current source to take the coupling between elements into consideration, thus obtaining the space of the SBFS. Compared with the conventional partition of the matrix, the method proposed in this paper can further release the heavy burden on the CPU in terms of memory and time. Therefore, this method can effectively analyze the scattering problem of large array antennas on PCs. Practical examples are analyzed using both this novel method and the conventional MoM. The comparison shows that the error of RCS is less than 2 dB, which demonstrates the accuracy and efficiency of the SBFS.

关 键 词：综合函数 矩量法 散射 雷达散射截面 

分 类 号：O441.4[理学—电磁学]