Simulation of Electromagnetic Wave Propagation Through Plasma Sheath Using the Moving-Window Finite-Difference Time-Domain Method

When a hypersonic vehicle reenters the Earth's atmosphere, plasma sheath generated by its collision with ambient air affects the electromagnetic (EM) wave propagation. To understand such effects is very important for the design of communication, telemetry, and satellite navigation systems. In t...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2011-03, Vol.39 (3), p.852-855
Main Authors: Liu, Jiang-Fan, Xi, Xiao-Li, Wan, Guo-Bin, Wang, Li-Li
Format: Article
Language:English
Subjects:
Computation
Computational modeling
Computer simulation
Electromagnetics
Finite difference method
Finite difference methods
Finite difference time domain method
Finite element analysis
Finite-difference time-domain (FDTD)
Hypersonic vehicles
Mathematical analysis
Mathematical models
moving window (MW)
Navigation systems
Plasma
plasma sheath
Plasma sheaths
Propagation
Simulation
Telemetry
Time domain analysis
Vehicles
Wave propagation
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Summary:When a hypersonic vehicle reenters the Earth's atmosphere, plasma sheath generated by its collision with ambient air affects the electromagnetic (EM) wave propagation. To understand such effects is very important for the design of communication, telemetry, and satellite navigation systems. In this paper, the transmission coefficient of the plasma sheath is investigated using the finite-difference time-domain (FDTD) method. The moving-window (MW) technology is employed to reduce the massive computational resources required by the large model. Results show that the MW-FDTD requires much less computational resources, as compared to the full FDTD simulation. Investigation on a hypersonic vehicle's plasma sheath shows that more EM energy could pass through the plasma sheath at the tail of the hypersonic vehicle. There is a certain frequency band with serious EM attenuation, which should be avoided when designing the communication system.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2010.2098890