Formation of artificial ionospheric mirror using electromagnetic radiation

Document Type : Original Article

Authors

1 Faculty of Electrical & Computer Engineering, Malek Ashter University of Technology, Iran

2 Malek Ashtar University

Abstract

The ionosphere, a crucial component of Earth's atmosphere, plays a pivotal role in facilitating radio communication. However, its inherent characteristics, such as the reflection and refraction of radio waves, are subject to instability, exhibiting sudden changes influenced by temporal and geographical factors. These fluctuations pose challenges for radar and communication systems reliant on the natural ionosphere, diminishing their reliability. Consequently, numerous studies have focused on inducing controllable alterations in ionospheric properties, including electron density, plasma frequency, and electron temperature. One prevalent method involves heating specific ionospheric regions using electromagnetic waves, offering a means to manipulate its characteristics deliberately. By implementing such controlled modifications, the inherent instability of the natural ionosphere can be mitigated. This paper presents the creation of an artificial ionized region, achieving an electron density of 108e/cm3, through a heating array with an Effective Radiated Power (ERP) of 153 dBW, situated at an altitude of 65 km. This artificial ionized zone enables controlled reflection of radio waves within the frequency range of 3-90 MHz, catering to radar and communication systems' requirements. The primary focus of this article is the analysis and investigation of the ionospheric heating process utilizing high-power electromagnetic waves emitted by heating antennas. Specifically, employing an analytical approach, the article delineates the calculation of requisite characteristics for the heating antennas to generate artificial ionized areas at varying altitudes.

Keywords


Volume 10, Issue 2 - Serial Number 28
Number 28, Autumn and Winter Quarterly
January 2023
  • Receive Date: 28 August 2022
  • Revise Date: 09 December 2022
  • Accept Date: 25 December 2022
  • Publish Date: 21 January 2023