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arXiv 0903.0663physics.opticsphysics.comp-ph
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基于极化电流的FDTD近远场变换

Polarization-Current-Based FDTD Near-to-Far-Field Transformation

Yong Zeng, Jerome V. Moloney

摘要:

本文提出了一种新的三维时域有限差分近远场变换算法。这种新方法直接基于散射体的极化电流,而不是散射近场。因此,它消除了源自E和H场的空间偏移的数值误差,这是标准近场到远场变换中固有的。所提出的方法是通过直接比较与分析Lorentz-Mie解决方案的平面波散射的大介质和金属球与强前向散射波瓣。

英文摘要:

A new near-to-far-field transformation algorithm for three-dimensional finite-different time-domain is presented in this article. This new approach is based directly on the polarization current of the scatterer, not the scattered near fields. It therefore eliminates the numerical errors originating from the spatial offset of the E and H fields, inherent in the standard near-to-far-field transformation. The proposed method is validated via direct comparisons with the analytical Lorentz-Mie solutions of plane waves scattered by large dielectric and metallic spheres with strong forward-scattering lobes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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