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ThinkMind // ICN 2019, The Eighteenth International Conference on Networks // View article icn_2019_1_20_30036
Investigation in Communication Behavior of Ionosphere
 Authors:
Kareem Difar
Antonio Sorin Tasu Keywords: IRI-Plas 2017; VOACAP; Refraction index. Abstract:
The Ionosphere is the region from 80 to 1000 km altitude above the Earth and it contains free electrons and ions that disturb the electromagnetic waves when the waves pass through it. Larger electrons density in the Ionosphere disturbs the GPS (Global Position System) signal that pass through it. The Ionosphere is a variable medium and its frequency behaviour cannot be predicted accurately. One issue arises because the Ionosphere near the equatorial region causes more electromagnetic signal errors compared to the North and South Poles. In this article, it has been proved that the GPS signals transmitted in equatorial regions are more refracted than the ones crossing the Ionosphere in the North and South Poles regions. The refraction index will decrease as the electron density increase. This subject is important, because if, for instance, a satellite is not working in military events, then there is an alternative communication solution, which employ Ionosphere as a reflector for long-distance terrestrial communication around the world. The free electrons in the Ionosphere create a high conductivity layer, which could be used as a perfect reflector for short waves in long-distance terrestrial communication. Two, namely, models, IRI (The International Reference Ionosphere)-Plas 2017 model and VOACAP model (The Voice of America Coverage Analysis Program), have been used in our simulations. These models were used to evaluate the quality of the Ionosphere in different regions for reflecting shortwaves frequencies and the perturbations for GPS signals. The selected regions for the simulations were Iraq, Romania, and Ukraine. The conclusion was that the Ionosphere efficiency of reflecting frequencies for Iraq region is better than the one for Romania and Ukraine regions. Pages: 7 to 12 Copyright: Copyright (c) IARIA, 2019 Publication date: March 24, 2019 Published in: conference ISSN: 2308-4413 ISBN: 978-1-61208-695-8 Location: Valencia, Spain Dates: from March 24, 2019 to March 28, 2019
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