Ionospheric effects on differential GPS applications during auroral substorm activity |
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| Institution: | 1. School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China;2. National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Qingdao 266107, China;3. Optics and Optoelectronics Laboratory, Department of Physics, Ocean University of China, Qingdao 266107, China;1. IZMIRAN, Kaluzskoe Sh. 4, Troitsk, Moscow 108840, Russia;2. Department of EEE, Hacettepe University, Beytepe, Ankara 06800, Turkey;3. Space Research Center, PAS, Barticka 18-A, Warsaw, Poland;1. Department of Computer Science, Electrical, and Space Engineering, Luleå University of Technology, Box 812, Rymdcampus, S-981 28 Kiruna, Sweden;2. Institute for Aerospace Studies, University of Toronto, Toronto M3H 5T6, Canada;1. Leibniz-Laboratory for Radiometric Dating and Isotope Research, University Kiel, Max-Eyth-Str. 11-13, 24118 Kiel, Germany;2. Institute of Physics – Center for Science and Education, Silesian University of Technology, Konarskiego Str. 22B, 44-100 Gliwice, Poland;3. AGH University of Science and Technology, Mickiewicza Av. 30, 30-059 Krakow, Poland;4. Centre for Baltic and Scandinavian Archaeology, Schleswig-Holstein State Museums Foundation, Schloss Gottorf, Schloßinsel, 24837 Schleswig, Germany;1. School of Electronic Information Engineering, South-central University for Nationalities, Wuhan, China;2. Department of Space Physics, School of Electronic Information, Wuhan University, Wuhan, China |
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| Abstract: | The use of the Global Positioning System (GPS) technology has become increasingly incorporated into airborne remote sensing applications over the past decade. While GPS positioning results may prove adequate for several applications at present, users should expect to experience degraded positioning accuracies over the next few years due to auroral substorm activity. Such degraded accuracies will arise from increased spatial decorrelation of ionosphere range delay errors in differential GPS applications, as the ionospheric activity increases during solar maximum. In this paper, the spatial decorrelation of ionospheric range delay is estimated during a substorm event and compared with “quiet” time values. Positional errors (in both vertical and horizontal measurements) in the range 60–80 cm RMSE were observed during a 1997 substorm event that is representative of the activity anticipated at solar maximum around the year 2000. |
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