What is the Galileo High Accuracy Service?

The High Accuracy Service (HAS) is a free high-accuracy positioning service for applications requiring higher accuracy than that offered by the Galileo Open Service. The Galileo High Accuracy Service (HAS) provides precise corrections in the Galileo E6-B data component as well as by terrestrial means so Galileo and GPS (single and multi-frequency) can achieve real-time improved user positioning performances (positioning error of less than two decimetres in nominal conditions).

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