We use the Finite-difference Time-domain ( FDTD) method to compute the scattered field of an object possessing several scattering centers. The numerical diffraction coefficient of the scattering center under investigation is then obtained by solving simultaneous equations established via GTD consideration.

  • 利用时域有限差分(FDTD)法提供的散射场,根据几何绕射理论(GTD)建立含有绕射系数未知量的方程组,通过联立方程组的求解,得到散射体边缘的数值绕射系数。

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