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Schlagwörter:
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Zusammenfassung:
The Galileo High Accuracy Service (HAS) provides precise corrections to improve the accuracy of the GPS and Galileo satellite's orbit, clock, and bias. Corrections are broadcast to users worldwide through Galileo signal (E6-B). The service aims to ensure real-time positioning performance on a global scale with an accuracy better than 20 cm (horizontal) and 40 cm (vertical) after 5 min of convergence time. The work presents the quality assessed of the HAS data recorded by the receivers at middle and high latitude. Depending on the location, the availability of HAS messages is analyzed. The study presents the accuracy evaluation of the HAS service corrections for the satellite orbit and clock with respect to the IGS final precise products. Furthermore, the accuracy of the HAS service corrections is compared to the IGS Real-Time Service (IGS RTS) corrections. Finally, HAS service performance is assessed in terms of the positioning accuracy in Precise Point Positioning method.
