FDTD近场数据外推时超松驰方法的应用

Application of SOR Method to the Extrapolation of FDTD Near-field Data

用时域有限差分（ＦＤＴＤ）方法处理自由空间散射问题时，只得到空间有限区域中的散射数据。根据等效原理，结合超松驰方法可以获得ＦＤＴＤ区以外所关心区域的散射场分布。本文给出这一外推方法及计算的例子。

in this paper,we present an extrapolation scheme implementing the SucceSSive Overrelaxation(SOR) method combined with the equivalence principle to extrapolate the FDTD near-field data. By using thisscheme we may conveniently derive the scattered field in a specified region outside the limited FDTD region.The examples demonstrate its feasibility.