CAJ | 학술논문

为解决矩量法在计算电大目标电磁特性时受计算机物理内存限制的问题，设计了一种核外自适应交叉近似算法。使用自适应交叉近似算法有效地压缩了阻抗矩阵，降低了所需存储空间和计算量；并结合核外技术，进一步节省了内存空间，提升了单台计算机的计算能力。通过算例检验了文中方法的准确性和有效性，结果表明：该方法有效地降低了求解电大目标雷达散射截面所需的内存和计算量，并且自适应交叉近似算法及核外计算不损失矩量法的计算精度。
위해결구량법재계산전대목표전자특성시수계산궤물리내존한제적문제，설계료일충핵외자괄응교차근사산법。사용자괄응교차근사산법유효지압축료조항구진，강저료소수존저공간화계산량；병결합핵외기술，진일보절성료내존공간，제승료단태계산궤적계산능력。통과산례검험료문중방법적준학성화유효성，결과표명：해방법유효지강저료구해전대목표뢰체산사절면소수적내존화계산량，병차자괄응교차근사산법급핵외계산불손실구량법적계산정도。
In order to solve computer memory limitation when computing the scattering characteristic of an electrically large target,the out-of-core adaptive cross approximation algorithm is designed.The adaptive cross approximation algorithm is used to compress the impedance matrix and reduce the computation complexity and storage effectively.By the use of the out-of-core technology,the memory space is reduced further and the calculating power of a single computer is raised by this method. The validity and effectiveness of the method are testified by numerical examples.lt is proved that the memory and computing time is reduced by this method when solving the radar cross section of a large target without losing the accuracy of the moment method.