期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 66, 期 9, 页码 4772-4781出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2018.2847601
关键词
Earth; earth-ionosphere waveguide; electromagnetic (EM) wave propagation; finite-difference time-domain (FDTD); ionosphere; plasma
资金
- National Science Foundation [1662318]
- Directorate For Geosciences
- ICER [1662318] Funding Source: National Science Foundation
A new finite-difference time-domain (FDTD) algorithm for electromagnetic wave propagation in magnetized plasma is proposed. This algorithm permits the use of two time step increments: one for Maxwell's equations, Delta t, and the other for the current density equation derived from the Lorentz equation of motion, Delta t(c). A major advantage of this algorithm over previous approaches is that only a single update iteration is needed for the current density equation even when Delta t(c) < Delta t. This provides significant time savings that can make previously infeasibly long simulations now practical. The algorithm's implementation is also relatively simple and it has relatively low memory requirements. The algorithm is validated against analytical results. A stability analysis is performed.
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