CAJ | 학술논문

直接应用三维矩量法求解旋转对称目标的电磁散射特性计算效率较低，计算机内存耗费大，利用其结构特点可降维获得一种更为有效的计算方式。然而对于电大目标，这种改进依然是不够的。文中根据旋转对称目标矩量法( BOR-MOM)中电流的分解特征，构建了一种基于切比雪夫近似的高阶基函数，将电流的切向分量和方位角分量分别以该高阶基函数展开后应用矩量法求解。实验结果表明：高阶BOR-MOM算法在低剖分下，具有很高的计算精度，计算效率和存储耗费得到了较大改善。
직접응용삼유구량법구해선전대칭목표적전자산사특성계산효솔교저，계산궤내존모비대，이용기결구특점가강유획득일충경위유효적계산방식。연이대우전대목표，저충개진의연시불구적。문중근거선전대칭목표구량법( BOR-MOM)중전류적분해특정，구건료일충기우절비설부근사적고계기함수，장전류적절향분량화방위각분량분별이해고계기함수전개후응용구량법구해。실험결과표명：고계BOR-MOM산법재저부분하，구유흔고적계산정도，계산효솔화존저모비득도료교대개선。
It is inefficient that the Method Of Moments (MOM) is applied to solve a three-dimensional (3-D) scattering problem of Bodies Of Revolution ( BOR) . A more efficient low dimensional way has been proposed based on the structural characteristics of BOR. However,this improvement is still not enough for analysis of electrically large objects. According to the decomposition property of the current on the surface of BOR,a high-order basis of function is constructed by the Chebyshev series,in which the current tangent and azi-muth components are expanded into high-order basis functions. Experimental results show that the high-order BOR-MOM can get higher computational precision with lower discretization,it can greatly improve the computational efficiency and storage consumption.