二代小波插值在目标RCS计算中的应用

针对二维目标电磁散射特性分析问题,提出了一种基于传统矩量法的新算法。该算法采用二代小波插值理论,通过近相关和远相关分离的办法,实现了阻抗矩阵元素的快速填充,从而实现目标雷达散射截面(RCS)的快速计算。将计算结果与传统矩量法计算的结果进行了比较,数值结果表明:在不影响精度的前提下,尤其是对于电大目标问题,本文方法的计算效率大大提高。

Second generation wavelets interpolation for calculating RCS of targets

A new algorithm based on the method of moments is introduced for the scattering analysis of two-dimensional targets.The theory of second generation wavelet interpolation and a method of separating the relationship between close distance and far distance are adopted in this algorithm,through which elements of impedance matrix can be filled efficiently.As a result,the radar cross section(RCS) of arbitrary targets is computed quickly.The numerical results presented are compared with the results obtained by the traditional method of moments.It is shown that,especially for electrically large targets,the complexity of computation is obviously reduced without sacrificing much accuracy.