Volume 41 Issue 6
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ZHANG Jie, ZHAO Shanchao, ZHANG Guodong. Transmission Characteristics of Electromagnetic Waves in Plasma with External Orthogonal Electromagnetic Fields[J]. Chinese Journal of Space Science, 2021, 41(6): 881-886. doi: 10.11728/cjss2021.06.881
Citation: ZHANG Jie, ZHAO Shanchao, ZHANG Guodong. Transmission Characteristics of Electromagnetic Waves in Plasma with External Orthogonal Electromagnetic Fields[J]. Chinese Journal of Space Science, 2021, 41(6): 881-886. doi: 10.11728/cjss2021.06.881
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Transmission Characteristics of Electromagnetic Waves in Plasma with External Orthogonal Electromagnetic Fields

doi: 10.11728/cjss2021.06.881 cstr: 32142.14.cjss2021.06.881

  • College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070

  • Received Date: 2020-06-01
  • Rev Recd Date: 2020-09-09
  • Publish Date: 2021-11-15
    Abstract
  • On the basis of Magnetohydrodynamics (MHD) and the theory of electromagnetic wave propagation, a physical model is proposed to solve the blackout in the reentry process of spacecraft. By means of numerical analysis, the variation trend of the electron density around the electromagnetic window is studied with the increase of the normal distance of the aircraft model under the premise of different axial distances of the aircraft model; the variation trend of electron density around the electromagnetic window is analyzed by changing the cross angle of the applied electric field and magnetic field; the variation trend of the ratio of electron density after applying an orthogonal electromagnetic field to electron density without applying electromagnetic field and the variation trend of attenuation of electromagnetic wave. The results show that when the orthogonal electromagnetic field is applied, the electron density around the antenna decreases with the increase of the normal distance of the aircraft, and the ratio of electron density to that without the applied electromagnetic field shows a decreasing trend. Attenuation of the electromagnetic wave decreases with the increase of electromagnetic frequency at different flying heights and magnetic field strength of the applied magnetic field. This provides a new method to alleviate the blackout.

     

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