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宽带宽角特性是电磁研究领域具有重要意义的课题。文章旨在将自适应修正特征基函数法(AM-CBFM)与基于模型参数估计(MBPE)的技术结合来构造一种快速分析三维目标体宽带宽角电磁特性的混合算法——AMCBFM-MBPE。其中AMCBFM基于对目标体分块,并充分考虑了各分块间耦合度的不同,块间耦合激励通过一系列的系数来修正,收敛判据运用各阶基函数所得的电流来确定。而MBPE基于有理函数插值法。AMCBFM-MBPE技术通过自适应采样后,只需要得到采样点的信息即可求得区间上的电磁特性。比逐点计算目标体电磁特性的传统方法明显减少了采样点的数目。数值结果显示,该混合方法具有精度高、计算时间少、不需要多余存储空间等优点。
Wide-bandwidth angular characteristics are of great significance in the field of electromagnetic research. The purpose of this paper is to combine AM-CBFM with MBPE to construct a hybrid algorithm called AMCBFM-MBPE which can quickly analyze the wide-angle electromagnetic characteristics of 3D target. Among them, AMCBFM is based on segmenting the target and taking full account of the coupling degree among the segments. Coupling excitation between blocks is corrected by a series of coefficients. The convergence criterion is determined by using the current from each basis function. MBPE is based on rational function interpolation. AMCBFM-MBPE technology through adaptive sampling, only need to get the information of the sampling point can be obtained on the interval of electromagnetic properties. The traditional method of calculating the electromagnetic properties of the target body from point to point significantly reduces the number of sampling points. The numerical results show that the hybrid method has the advantages of high precision, less computation time and unnecessary extra storage space.