TY - JOUR
T1 - Two-dimensional FDTD model of antipodal ELF propagation and Schumann resonance of the Earth
AU - Simpson, Jamesina J.
AU - Taflove, Allen
PY - 2002
Y1 - 2002
N2 - This letter reports the initial application of the finite-difference time-domain (FDTD) method to model extremely low-frequency (ELF) propagation around the entire Earth. Periodic boundary conditions are used in conjunction with a variable-cell two-dimensional TM FDTD grid, which wraps around the complete Earth sphere. The model is verified by numerical studies of antipodal propagation and the Schumann resonance. This model may be significant because it points the way toward direct three-dimensional FDTD calculation of round-the-world ELF propagation, accounting for arbitrary horizontal as well as vertical geometrical and electrical inhomogeneities of the ionosphere, continents, and oceans.
AB - This letter reports the initial application of the finite-difference time-domain (FDTD) method to model extremely low-frequency (ELF) propagation around the entire Earth. Periodic boundary conditions are used in conjunction with a variable-cell two-dimensional TM FDTD grid, which wraps around the complete Earth sphere. The model is verified by numerical studies of antipodal propagation and the Schumann resonance. This model may be significant because it points the way toward direct three-dimensional FDTD calculation of round-the-world ELF propagation, accounting for arbitrary horizontal as well as vertical geometrical and electrical inhomogeneities of the ionosphere, continents, and oceans.
KW - Antipodal propagation
KW - ELF
KW - Earth
KW - Finite difference time domain (FDTD)
KW - Schumann resonance
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U2 - 10.1109/LAWP.2002.805123
DO - 10.1109/LAWP.2002.805123
M3 - Article
AN - SCOPUS:0043039832
SN - 1536-1225
VL - 1
SP - 53
EP - 56
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
ER -