CAJ | 학술논문

如何对宽角度激励下各类目标尤其是电大目标的电磁散射特性进行快速分析是计算电磁学一直以来的难点课题之一。为此提出一种自适应交叉近似结合压缩感知的新方案，利用压缩感知理论构建一种含多角度信息的新型电磁场激励，降低矩量法运算次数，以自适应交叉近似对阻抗矩阵进行低秩分解，进一步提高单次矩量法的计算效率，从而最终实现了对电大目标宽角度散射问题的快速求解。数值实验结果表明，该方案能在有效缩短运算时间的同时，依然确保计算结果的准确性。
여하대관각도격려하각류목표우기시전대목표적전자산사특성진행쾌속분석시계산전자학일직이래적난점과제지일。위차제출일충자괄응교차근사결합압축감지적신방안，이용압축감지이론구건일충함다각도신식적신형전자장격려，강저구량법운산차수，이자괄응교차근사대조항구진진행저질분해，진일보제고단차구량법적계산효솔，종이최종실현료대전대목표관각도산사문제적쾌속구해。수치실험결과표명，해방안능재유효축단운산시간적동시，의연학보계산결과적준학성。
Fast analysis of electromagnetic scattering properties of various objects ,especially electrically large objects over a wide angle ,is always a difficult problem in computational electromagnetics .A new solution using compressed sensing in conjunction with adaptive cross approximation was proposed ,and a new incident source including different angle information was constructed based on compressed sensing theory ,which could reduce the number of computation times for method of moments . Meanwhile , adaptive cross approximation technique was also introduced to method of moments to form a low rank decomposition of the impedance matrix . Thus a new scheme was finally formed to rapidly analyze electromagnetic scattering problems for electrically large objects over a wide angle .Numerical results show that this solution can reduce operation time effectively while retaining the accuracy of calculation results .