Worst-Case GPS Scintillations on the Ground Estimated from Radio Occultation Observations of FORMOSAT-3/COSMIC During 2007–2014

NCUIR > College of Earth Sciences > DEPARTMENT OF SPACE SCIENCE AND ENGINEERING > journal & Dissertation > Item 987654321/102368

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/102368

Title:	Worst-Case GPS Scintillations on the Ground Estimated from Radio Occultation Observations of FORMOSAT-3/COSMIC During 2007–2014
Authors:	劉正彥;Liu, J. Y.;Chen, S. P.;Yeh, W. H.;Tsai, H. F.;Rajesh, P. K.
Contributors:	地球科學學院太空科學與工程學系
Keywords:	Astronomy;Earth and Environmental Science;Earth Sciences;Estimates;Geophysics/Geodesy;Global positioning systems;GPS;Grounds;Ionosphere;Latitude;Observations and Techniques;Radio occultation;Satellite navigation systems;Satellites;Scintillation;Seasons;Solar activity;Three dimensional
Date:	2016-07-01
Issue Date:	2026-04-23 11:07:10 (UTC+8)
Publisher:	Springer Netherlands;Dordrecht: Springer Netherlands
Abstract:	摘要： The FORMOSAT-3/COSMIC (F3/C) satellite probes the S4 scintillation index profile of GPS signals by using the radio occultation (RO) technique. In this study, for practical use on the Earth’s surface, a method is developed to convert and integrate the probed RO S4 index, so obtaining the scintillation on the ground. To estimate the worst case, the maximum value on each profile probed by F3/C, which is termed S4max, is isolated. The isolated data are further used to construct the global three-dimensional distributions of S4max for various local times, seasons, solar activities, and locations. The converted S4max for the first time estimates the global distribution of ionospheric scintillations in the GPS L1 band C/A code signal on the ground. The results show that the worst-case scintillations appear within the low-latitude region of ±30°N, peaking around ±20°N magnetic latitude; they begin at 1900 MLT, reach their maximum at 2100 MLT, and vanish by about 0200–0300 MLT. The most pronounced low-latitude scintillation occurs over the South American and African sectors. 其他題名： Surv Geophys 出版者： Dordrecht: Springer Netherlands 出版日期： 2016-07 出處： Surveys in geophysics, 2016-07, Vol.37 (4), p.791-809 資源來源： SpringerLink Journals 版權： Springer Science+Business Media Dordrecht 2015 版權： Springer Science+Business Media Dordrecht 2016 識別號： ISSN: 0169-3298 識別號： EISSN: 1573-0956 識別號： DOI: 10.1007/s10712-015-9355-x
Appears in Collections:	[DEPARTMENT OF SPACE SCIENCE AND ENGINEERING] journal & Dissertation

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