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Pade插值结合FDTD法应用于宽角度RCS的快速获取

Fast calculation of wide angle mono-static RCS of a 2-D cylinder using the FDTD method and the Pade interpolation technique
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摘要 引入Pade插值技术 ,对FDTD法计算的稀疏的RCS响应进行逼近 ,然后用获得的Pade有理逼近式计算宽角度RCS响应 .文中采用了最小二乘法 ,进行全局约束 ,以充分利用已有信息 ,达到最佳逼近的效果 .计算结果表明 ,Pade有理逼近式能很好地逼近FDTD法精确计算的曲线 。 The Pade interpolation technique is employed to obtain wide-angle results with satisfactory accuracy. By using RCS results at some angles calculated by FDTD method, the rational function of RCS pattern can be achieved. Then the wide-angle RCS pattern can be calculated by use of the rational function. The least square method is adopted to make use of the RCS results from FDTD method. The wide-angle RCS results computed by use of the Pade interpolation technique are compared with the conventional FDTD results. A good agreement is obtained while with new method the calculation speed is much faster.
作者 许锋 洪伟
机构地区 东南大学国家毫米波重点实验室
出处 《东南大学学报（自然科学版）》 EI CAS CSCD 北大核心 2002年第1期42-45,共4页 Journal of Southeast University：Natural Science Edition
关键词 Pade插值 时域有限差分法 雷达散射截面 最小二乘法 FDTD法 电磁散射 宽角度RCS响应 快速逼近 Interpolation Least squares approximations Numerical methods Scattering
分类号 TN957.5 [电子电信—信号与信息处理] TN011 [电子电信—物理电子学]
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参考文献11

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东南大学学报（自然科学版）
2002年 第1期

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