Using tomography of GPS TEC to routinely determine ionospheric average electron density profiles |
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| Affiliation: | 1. Institute of Geophysics and Planetary Physics, University of California Los Angeles, USA;2. CRC for Satellite System, Physics Department, Latrobe University, Bundoora, Australia;1. Stanford University, Stanford, USA;2. Southwest Research Institute, San Antonio, USA;3. University of California, Los Angeles, USA;1. Department of Pathology and Cell Biology, Columbia University College of Physicians and Surgeons, New York, NY, USA;2. Department of Pathology and Laboratory Medicine, Hofstra Northwell School of Medicine, Manhasset, NY, USA;1. School of Materials Science and Engineering, Southeast University, Nanjing 211189, China;2. Jiangsu Key Laboratory of Construction Materials, Nanjing 211189, China;3. Department of Civil, Environmental and Geomatic Engineering, University College London, London WC1E 6BT, UK;1. CAS Key Laboratory for Geospace Environment, School of Earth & Space Sciences, University of Science & Technology of China, Hefei, China;2. Mengcheng National Geophysical Observatory, School of Earth & Space Sciences, University of Science & Technology of China, Hefei, China;1. Department of Physics, Addis Ababa University, P.O. Box: 1176, Addis Ababa, Ethiopia;2. Department of Physics, Mekelle University, P.O. Box: 231, Mekelle, Ethiopia;1. College of Field Engineering, PLA University of Science & Technology, Nanjing 210007, China;2. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;3. The First Scientific Research Institute of Wuxi, Wuxi 214035, China;4. State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, PLA University of Science & Technology, Nanjing 210007, China |
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| Abstract: | This paper introduces a technique that calculates average electron density (Ne) profiles over a wide geographic area of coverage, using tomographic ionospheric Ne profiles. These Ne profiles, which can provide information of the Ne distribution up to global positioning system (GPS) orbiting altitude (with the coordination of space-based GPS tomographic profiles), can be incorporated into the next generation of the international reference ionosphere (IRI) model. An additional advantage of tomography is that it enables accurate modeling of the topside ionosphere. By applying the tomographic reconstruction approach to ground-based GPS slant total electron content (STEC), we calculate 3-h average Ne profiles over a wide region. Since it uses real measurement data, tomographic average Ne profiles describe the ionosphere during quiet and disturbed periods. The computed average Ne profiles are compared with IRI model profiles and average Ne profiles obtained from ground-based ionosondes. |
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