一种基于幂级数函数的混合域基函数的收敛性分析

为提高计算效率,以一种基于双线性四边形模拟物体形状的幂级数函数为混合域基函数,用伽列金矩量法(MOM)对电中、小尺寸金属散射体的雷达散射截面(RCS)进行计算。分析了幂数级函数阶数M与其收敛性的关系。对二面角、矩形平板、等边三角形平板和圆柱等不同目标的单站或双站RCS计算结果表明,在此特定条件下M=3时该算法计算值与文献结果较为吻合,计算速度和精度均可满足仿真要求。

Analysis on the Astringency of a Hybrid-Domain Basis Function Based on Exponential Series Function

To heighten the computation efficiency,the radar cross section(RCS) of the electricity middle and small size metallic targets was calculated by Galerkin-method of moment when a exponential series function was applied as a kind of hybrid domain basis function based on bilinear quadrilateral that imitated target shape in this paper.The relationship between the order M of the exponential series function and astringency was also analyzed.The computation results of monostatic or bistatic RCS for various targets with the shape of dihedral angle,rectangular plate,equilateral triangle and cylinder showed that the calculated value when M was 3 was agreed with the result in different references.The computation speed and accuracy could meet the simulation requirement.