The finite-difference-time-domain (FDTD), although recognized as a flexible, robust and
simple to implement method for solving complex electromagnetic problems, is subject to …

探地雷达数值模拟中, 时域有限差分法在时间和空间上一般采用二阶精度的中心差分近似(FDTD
(2, 2)), 其形式简单, 但数值色散误差较大, 在复杂模型模拟时不能很好地反映模型的精细变化 …

The integration of ground-penetrating radar (GPR) with unmanned aerial vehicles (UAVs)
enables efficient non-contact detection, performing exceptionally well in complex terrains …

Numerical dispersion errors in the wave-equation-finite-difference-time-domain (WE-FDTD)
method have been treated by higher order schemes, coefficient modification schemes …

In this letter, a theoretical analysis of the numerical dispersion and key parameter selection
of the finite-difference time-domain (FDTD) method with weighted Laguerre polynomials is …

Three modified conformal techniques combined with high-order finite-difference time-
domain method (FDTD (2, 4)) are proposed to investigate the interaction of electromagnetic …

The higher order (2, 4) scheme optimized in terms of Taylor series in the finite-difference
time-domain method is often used to reduce numerical dispersion and anisotropy. This …

We define a new concept, termed the spectral order of accuracy (SOoA), which is the
spectral domain analogue of the familiar order of accuracy (OoA). The SOoA is pivotal in a …

Based on both the compact technique and the precise-integration (PI) technique, a 2-D
compact precise-integration time-domain method (CPITD) is developed in order to mitigate …

In this paper, novel finite-difference time-domain (FDTD) schemes are introduced for the
numerical solution of Maxwell's equations on dual staggered Cartesian three-dimensional …