摘要
复射线展开法是计算目标散射场的一种简捷的方法,其可靠性有赖于对误差特性的系统研究。本文以平面波谱积分为散射场计算的参考标准,以L^2空间中由范数定义的距离作为复射线展开法计算结果的误差,从而得到了复射线展开法在目标散射场计算中的误差特性,找到了减小误差的方法并给出这一方法的适用范围。
The complex ray expansion is a simple approach for target scattering field computation, whose effectiveness depends on the systematic investigation of its error. In this paper, plane wave spectral integral is used as a standard reference and the 'distance' defined by norm in L2 space is introduced as the error function for comparison between the two methods, and then the error characteristics of complex ray expansion appoach for target scattering field computation are obtained. The way to decrease the error and the application range of the complex ray expansion method are also obtained.
基金
国家自然科学基金
国家教委博士点基金
关键词
复射线展开法
电磁散射
目标散射场
Complex ray expansion, Error analysis, Electromagnetic scattering. Spectral integral
