NDLI: Reduced global positioning system (GPS) positioning error by mitigating ionospheric scintillation

Content Provider	IEEE Xplore Digital Library
Author	Ho, Y.H. Abdullah, S.
Copyright Year	2014
Description	Author affiliation: Fac. of Electron. & Comput. Eng., Univ. Teknikal Malaysia Melaka (UTeM), Durian Tunggal, Malaysia (Ho, Y.H.) \|\| Inst. of Space Sci. (ANGKASA), Univ. Kebangsaan Malaysia (UKM), Bangi, Malaysia (Abdullah, S.)
Abstract	GPS has diverse application in current globalized world, its application has pervasive benefits not only to navigation and positioning, it is pivotal in industries like logistics, shipping, financial services and agriculture. Since the decision to shut down the Selectivity Availability (SA) by former U.S. President, Bill Clinton, ionospheric effect is now the primary concern of error contributing factors in GPS. Ionospheric scintillation induces rapid fluctuations in the phase and the amplitude of received GNSS signals. These rapid fluctuations or scintillation potentially introduce cycle slips, degrade range measurements, and if severe enough lead to loss of lock in phase and code. Global Ionospheric Scintillation Model (GISM) was used to compute amplitude scintillation parameter for each GPS satellite visible from Melaka, Malaysia (Latitude $2^{0}$ 14' N, Longitude $102^{0}$ 16' E) as its location has strong equatorial scintillation behavior. The output data from GISM was then used to calculate the positioning error where it is depends on the Dilution of Precision (DOP) and User Equivalent Range Error (UERE). There are five schemes that were used. First, the positioning error was calculated for all the visible satellites with mask angle > $5^{0}.$ Secondly, the positioning error was calculated for 6 satellites that having lowest UERE. Thirdly, the positioning error was calculated for all the visible satellites with mask angle > $10^{0}.$ Fourthly, the positioning error was calculated for those satellites that have amplitude scintillation index, S4 <; 0.7. Lastly, the positioning error was calculated for those satellite having outliers> 10% of mean S4 for all satellites. Comparison of results from these schemes were then made.
Sponsorship	IEEE Power Electron.
Starting Page	110
Ending Page	115
File Size	2765235
Page Count	6
File Format	PDF
e-ISBN	9781479954360
DOI	10.1109/ISWTA.2014.6981167
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-28
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Satellites Positioning Error Satellite broadcasting Receivers Scintillation GPS Mathematical model Ionosphere Global Positioning System
Content Type	Text
Resource Type	Article

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