Investigation and Validation of Short-Wave Scattering in the Anisotropic Ionosphere under a Geomagnetic Field

Short-wave communication, operating within the frequency range of 3–30 MHz, is extensively employed for long-distance communication because of its extended propagation range and robustness. The ionosphere undergoes complex transformations when influenced by the geomagnetic field, evolving into an un...

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Bibliographic Details
Published in:Atmosphere 2024-07, Vol.15 (7), p.767
Main Authors: Zhang, Zhigang, She, Jingyi, Fu, Hongwei, Zhao, Lin, Ji, Shengyun
Format: Article
Language:English
Subjects:
Accuracy
Altitude
Anisotropy
Charged particles
Electromagnetic fields
Electromagnetic radiation
Electromagnetic scattering
Electron density
Frequency ranges
Geomagnetic field
Geomagnetism
Ionization
Ionosphere
Ionospheric electron density
Ionospheric electrons
ionospheric model
Ionospheric propagation
Methods
Multilayers
Plasma
Propagation
short-wave communication
Thin films
transfer matrix method
Wave scattering
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Summary:Short-wave communication, operating within the frequency range of 3–30 MHz, is extensively employed for long-distance communication because of its extended propagation range and robustness. The ionosphere undergoes complex transformations when influenced by the geomagnetic field, evolving into an uneven and anisotropic electromagnetic medium. This complex property makes the transmission of electromagnetic fields within the ionosphere extremely complex, posing significant challenges for accurately evaluating electromagnetic scattering phenomena. To address the aforementioned challenges, this paper proposes a new method for calculating short-wave ionospheric scattering based on a complex anisotropic multilayer medium transmission matrix. Firstly, by utilizing the characteristic changes of ionospheric electron density with height, the ionization layer is divided into multiple horizontal thin layers, each with an approximately uniform electron density, forming a multilayer horizontal anisotropic structure. Subsequently, the scattering characteristics of electromagnetic waves in the ionosphere were calculated using the transmission matrix approach. The results calculated using this method are consistent with actual measurement values and superior to traditional short-wave ionospheric transmission calculation methods.
ISSN:2073-4433
2073-4433
DOI:10.3390/atmos15070767