Electromagnetic Scattering by Artificial Plasma Clouds in the Ionosphere

Vaporized samarium (Sm) has been released in the ionosphere for artificially creating plasma clouds, which may be tailored as radio wave reflectors for over-the-horizon communications. The model of samarium releases needs to be further refined for filling the gap between experimental observations an...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2020-06, Vol.68 (6), p.4810-4819
Main Authors: Zhao, Hai-Sheng, Xu, Zheng-Wen, Tang, Wei, Xu, Zhao-Hui, Xue, Kun, Xie, Shou-Zhi, Zheng, Yan-Shuai, Wu, Jian, Zhang, Jin-Dong
Format: Article
Language:English
Subjects:
Artificial plasma cloud
Atmospheric modeling
Chemicals
Clouds
Computer simulation
Density distribution
Diffraction theory
Electromagnetic scattering
Geomagnetic field
Geomagnetism
Ionosphere
over-the-horizon communications
Photochemical reactions
Plasma
Plasma clouds
Plasmas
Radio waves
Redundancy
Reflectors
Samarium
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Summary:Vaporized samarium (Sm) has been released in the ionosphere for artificially creating plasma clouds, which may be tailored as radio wave reflectors for over-the-horizon communications. The model of samarium releases needs to be further refined for filling the gap between experimental observations and theoretical simulations. A sophisticated simulation model, so far to date, for samarium release in the ionosphere has been developed, and the redundancy reaction, inversion, and the photochemical reactions are all taken into account. The model results are consistent with experimental observations. Due to the geomagnetic field and neutral wind, the shape of artificial plasma clouds significantly changes. The error of the spherically symmetric reflection model is large. According to the density distribution of plasma clouds, the geometric theory of diffraction (GTD) is introduced here to deal with the electromagnetic scattering. The GTD-based scattering model has been established and used to study the time-space evolution of the ground-received power patterns in this article.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2020.2972608