Aimed at three-dimensional footprint characteristic, the uniform coordinate system which is based on the footprint trace expert knowledge has been established for footprint image.
针对立体足迹自身特点，结合足迹痕迹检验专家知识，本文提出一种立体足迹图象的坐标系统构造方法。
A general formula is derived for a finite-difference method (FDM) with non-uniform grids in a cylindrical coordinate system, and a perfectly matched layer (PML) is used for the boundary treatment.
在均匀格点的基础上，给出了基于柱坐标的全矢量非均匀格点有限差分方法(FDM)，并采用了完美匹配层(PML)边界条件。
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