| Pade插值结合FDTD法应用于宽角度RCS的快速获取 |
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| 引用本文： | 许锋,洪伟.Pade插值结合FDTD法应用于宽角度RCS的快速获取[J].东南大学学报(自然科学版),2002,32(1):42-45. |
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| 作者姓名： | 许锋 洪伟 |
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| 作者单位： | 东南大学国家毫米波重点实验室,南京,210096 |
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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有逼近式能很好地逼近FDTD法精确计算的曲线，曲时在计算速度上可加快几倍。
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| 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 |
| 文章编号： | 1001-0505(2002)01-0042-04 |
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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| Xu Feng,Hong Wei.Fast calculation of wide angle mono-static RCS of a 2-D cylinder using the FDTD method and the Pade interpolation technique[J].Journal of Southeast University(Natural Science Edition),2002,32(1):42-45. |
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| Authors: | Xu Feng Hong Wei |
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| Abstract: | 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 the new method the calculation speed is much faster. |
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| Keywords: | FDTD Pade interpolation RCS least square method |
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