Parameterization of the tapered incident wave for numerical simulation of electromagnetic scattering from rough surface
Parameterization of the tapered incident wave for numerical simulation of electromagnetic scattering from rough surface
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DOI：
10.1109/tap.2004.842586
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发表时间：
2005-03
影响因子：
5.7
通讯作者：
Hongxia Ye;Yaqiu Jin
中科院分区：
文献类型：
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作者：
Hongxia Ye;Yaqiu Jin
将具有锥形参数g的锥形波应用于有限长随机粗糙面电磁散射的数值模拟。本文介绍了如何选择参数g和L，并给出了与入射角的定量关系。参数g作为入射角的函数，应足够大，以使波动方程在允许的误差范围内。表面长度L大于几个相关长度，应该足够大以抑制表面边缘处的间断功率，并限制以进行有效的计算。结合这些准则，示出了针对不同入射角/spl θ/sub i/定位g和L的图形格式。提出了选择g和L作为/spl θ//sub i/的函数的经验公式。
The tapered wave with the tapering parameter g has been applied to numerical simulation of electromagnetic scattering from randomly rough surface with illuminated finite surface length L. This communication presents how to select the parameters g and L, and shows quantitative relationship with the incident angle. The parameter g, as a function of incident angle, should be large enough to make the wave equation in the range of allowable error. The surface length L, larger than several correlation lengths, should be large enough to suppress the punctuated power at the surface edges and be limited to make efficient computation. Combining these criterions, a graphical format to locate g and L for different incident angle /spl theta//sub i/ is illustrated. An empirical formula for selecting g and L as a function of /spl theta//sub i/ is proposed.