Finite-Difference Time-Domain solution of Maxwell's equations for the dispersive ionosphere

Journal Article · Thu Oct 01 00:00:00 EDT 1992 · IEEE Antennas and Propagation Magazine (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/74.163808· OSTI ID:6901707

Nickisch, L J; Franke, P M ^[1]

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1. Mission Research Corp., Monterey, CA (United States) Illinois Univ., Urbana (United States)

The Finite-Difference Time-Domain (FDTD) technique is a conceptually simple, yet powerful, method for obtaining numerical solutions to electromagnetic propagation problems. However, the application of FDTD methods to problems in ionospheric radiowave propagation is complicated by the dispersive nature of the ionospheric plasma. In the time domain, the electric displacement is the convolution of the dielectric tensor with the electric field, and thus requires information from the entire signal history. This difficulty can be avoided by returning to the dynamical equations from which the dielectric tensor is derived. By integrating these differential equations simultaneously with the Maxwell equations, temporal dispersion is fully incorporated. 12 refs.

• OSTI ID: 6901707
• Journal Information: IEEE Antennas and Propagation Magazine (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Antennas and Propagation Magazine (Institute of Electrical and Electronics Engineers); (United States) Vol. 34:5; ISSN IAPMEZ; ISSN 1045-9243
• Country of Publication: United States
• Language: English

Related Subjects

661320* -- Auroral
Ionospheric
& Magnetospheric Phenomena-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CALCULATION METHODS
COMMUNICATIONS
DIFFERENTIAL EQUATIONS
EARTH ATMOSPHERE
ELECTRIC FIELDS
EQUATIONS
FINITE DIFFERENCE METHOD
IONOSPHERE
ITERATIVE METHODS
MAXWELL EQUATIONS
MEASURING INSTRUMENTS
NUMERICAL SOLUTION
OPTICAL PROPERTIES
PARTIAL DIFFERENTIAL EQUATIONS
PHYSICAL PROPERTIES
PLANETARY IONOSPHERES
RADAR
RANGE FINDERS
REFRACTIVITY
TENSORS
TIME DEPENDENCE
VECTORS