Ionospheric electron density profiling and modeling of COSMIC follow-on simulations

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Title:	Ionospheric electron density profiling and modeling of COSMIC follow-on simulations
Authors:	蔡龍治;Tsai, L.-C.;Su, S.-Y.;Liu, C. H.;Tulasi Ram, S.
Contributors:	太空及遙測研究中心
Keywords:	Earth and Environmental Science;Earth orbits;Earth Sciences;Electrons;Feasibility studies;Geodetics;Geophysics/Geodesy;Global positioning systems;GPS;Ionosphere;Original Article;Satellites;Simulation
Date:	2016-02-01
Issue Date:	2026-04-21 14:38:46 (UTC+8)
Publisher:	Springer Verlag;Berlin/Heidelberg: Springer Berlin Heidelberg
Abstract:	摘要： The FormoSat-3/ Constellation Observing System for Meteorology, Ionosphere and Climate (FS3/COSMIC) has been proven a successful mission on profiling ionospheric electron density ( N e ) using the radio occultation (RO) technique. A follow-on program (called FS7/COSMIC2) is now in progress. The FS3/COSMIC follow-on mission will have six 24 ∘ -inclination and 550-km low Earth orbiting (LEO) satellites and six 72 ∘ -inclination and 750-km LEO satellites to receive Tri-G (GPS, GLONASS, and Galileo) satellite signals. FS7/COSMIC2 RO observations were simulated in this study by calculating limb-viewing GNSS-to-LEO TEC values separately through two independent ionospheric models (the TWIM and NeQuick models). We propose a compensatory Abel-inversion scheme to improve vertical N e profiling and three-dimensional (3D) N e modeling in this FS7/COSMIC2 simulation study with future real observations. In this FS7/COSMIC2 feasibility study the number of RO observations will increase of around 10 times compared with FS3/COSMIC, and the windowing day number to collect N e profiles and to derive every half-hour 3D N e model could be decreased from 30 to 3 days. The results show that the root-mean-square (RMS) foF2 and hmF2 difference improvements are 46 % (32 %) and 21 % (4.6 %), respectively, in relative percentage over the standard Abel inversion at the TWIM-background (NeQuick-background) simulation experiment. The RMS modeling errors are about one order less than those from FS3/COSMIC simulations. 其他題名： J Geod 出版者： Berlin/Heidelberg: Springer Berlin Heidelberg 出版日期： 2016-02-01 出處： Journal of geodesy, 2016-02, Vol.90 (2), p.129-142 資源來源： Alma/SFX Local Collection 版權： Springer-Verlag Berlin Heidelberg 2015 版權： Journal of Geodesy is a copyright of Springer, 2016. 識別號： ISSN: 0949-7714 識別號： EISSN: 1432-1394 識別號： DOI: 10.1007/s00190-015-0861-x
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