Essays about: "ionosphere"
Showing result 6 - 10 of 47 essays containing the word ionosphere.
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6. Ion and ENA precipitation onto the upper atmosphere of Venus : Estimate of precipitation maps using data from a hybrid model
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : Venus does not have a strong intrinsic magnetic field as the Earth, and its magnetosphere is induced by the interaction of the solar wind with the ionosphere. The near-Venus space environment is characterized by the presence of a bow shock and of an induced magnetic boundary linked to the interplanetary magnetic field orientation. READ MORE
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7. Development of a model for ionospheric instabilities in the equatorial region
University essay from Luleå tekniska universitet/RymdteknikAbstract : This work is part of a bigger project on analyzing the ionospheric dynamics in the equatorial region using simulations. The main objective of this study is to determine and characterize the parameters needed to trigger instabilities and thus the formation of plasma bubbles. READ MORE
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8. Contribution to the Understanding of the Effects of Propagation through the Ionosphere of P-band SAR Data
University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknikAbstract : The BIOMASS mission from the European Space Agency (ESA) is designed to measurebiomass and carbon content in Earth’s forests. To account for phase changes caused byionospheric variations, a map-drift autofocus algorithm is developed, which utilises a phasescreen of the ionosphere to eliminate phase errors in the signal. READ MORE
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9. Validating and comparing Total Electron Content estimates from Incoherent Scatter Radar and Global Positioning System
University essay from Luleå tekniska universitet/RymdteknikAbstract : This thesis aims to analyze the possibilities to use Incoherent Scatter Radar to measure Total Electron Content in the ionosphere. By comparing the results from EISCATselectron density data over altitude and time to Total Electron Content estimates from GPS satellites and their receivers through a climatology as well as qualitative analysis for separate EISCAT experiments a comparison between the two is conducted. READ MORE
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10. Possible Bow Shock Current Closure to Earth's High Latitude Ionosphere on Open Field Lines
University essay from Umeå universitet/Institutionen för fysikAbstract : The bow shock is formed due to the abrupt deceleration of the supersonic solar wind in front of the terrestrial magnetic field. The solar wind plasma and the Interplanetary Magnetic Field (IMF) are both compressed across the shock, and according to Ampère's law a current thus flows on the bow shock at all times. READ MORE