Obtaining more accurate electron density profiles from bending angle with GPS occultation data: FORMOSAT-3/COSMIC constellation |
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Authors: | A Aragon-Angel M Hernandez-PajaresJM Juan J Sanz |
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Institution: | Research Group of Astronomy and GEomatics, Technical University of Catalonia, Jordi Girona 1-3 Module C3, 08034 Barcelona, Spain |
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Abstract: | Since 1995, with the first GPS occultation mission on board Low Earth Orbiter (LEO) GPS/MET, inversion techniques were being applied to GPS occultation data to retrieve accurate worldwide distributed refractivity profiles, i.e. electron density profiles in the case of Ionosphere. Important points to guarantee the accuracy is to take into account horizontal gradients and topside electron content above the LEO orbit. This allows improving the accuracy from 20% to 50%, depending on the conditions, latitude and epoch regarding to Solar cycle as reported in previous works. |
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Keywords: | Radio occultations FORMOSAT-3/COSMIC GPS Ionosphere Electron density profiles Bending angle |
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