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The main cause of errors in the navigation of the Global Positioning System (GPS) satellite is the ionospheric delay. Therefore, ionospheric delay forecasting studies play an important role in the reduction of the positioning error. This paper focuses on forecasting of ionospheric delay using the statistical Holt-Winter method during the quiet and disturbed days in October 2011, using GPS Ionospheric...
The ionospheric delay is the main factor that causes the errors in the navigation of the global positioning system (GPS). GPS satellite signals propagate through the ionosphere before reaching the GPS receiver on earth. Therefore, ionosphere forecasting studies play an important role in the reduction of this positioning error. In this work, a statistical method for forecasting the ionospheric delay...
The difference in ionospheric delay between paths to the reference and mobile stations for differential GPS has been quantified for equatorial region. This small additional ionospheric error can be evaluated and predicted for the mobile station by means of a determined differential delay along the baseline so that accurate correction can be made for the most precise positioning. In this paper we studies...
GPS is of great importance in precise positioning, however, the accuracy is marked by error sources, i.e. ionospheric effects. The signal information is delayed and the carrier phase experiences an advance due to the dispersive character of the ionosphere. The delay can be more than 100 meters in the worst case scenario and tends to increase with increasing solar activity. This error can be corrected...
The ionospheric delay in the propagation of Global Positioning System (GPS) signal is one of the main sources of error in GPS precise positioning. Therefore, it is important to have a precise estimation of the ionospheric delays. A new approach in the determination of the differential (between spaced receivers) ionospheric error to sub-centimetre accuracy is described in this paper utilising a developed...
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