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GSA publishes High Accuracy Service information update

March 31, 2021  - By
Click to download report from the GSA.

Click to download report from the GSA.

The European GNSS Agency (GSA), with the European Commission, has published an information note on the Galileo High Accuracy Service (HAS). The 16-page document provides an overview of the main characteristics of the service, information on features such as service levels, target performance, an implementation roadmap, and an overview of the target markets for the service.

Target markets for Galileo HAS include geomatics, precision agriculture, consumer solutions and the space sector.

The market for high-accuracy positioning is dynamic, driven by various factors, including

  • emerging applications such as autonomous vehicles and drones;
  • technological advances such as dual-frequency chipsets for the mass-market; and
  • the market situation, with cheap or free-of-charge augmentation services available in some countries.

These factors are resulting in the democratization of high accuracy, which is becoming a more widespread commodity, rather than the exclusive domain of professional applications.

With the Galileo HAS, Galileo will pioneer a worldwide, free high-accuracy positioning service aimed at applications that require higher performance than that offered by the Galileo Open Service.

Benefitting several markets

Target markets for the HAS include geomatics, agriculture or consumer solutions. Transport is also a major potential target market, with possible applications in aviation, road, rail and maritime and inland waterways.

In these markets, the HAS will provide high-accuracy precise point positioning corrections for Galileo and GPS free of charge, in the Galileo E6-B data component and by terrestrial means, to achieve real-time improved user positioning performances, with a positioning error of less than two decimetres in nominal conditions.

“With its High Accuracy Service, Galileo will be the first satellite constellation able to provide a high-accuracy precise point positioning service globally, directly through the Signal in Space,” said GSA Executive Director Rodrigo da Costa. “This will be another key differentiator of the Galileo system, giving it a competitive advantage over other systems and allowing it to foster innovation in both consolidated and emerging markets.”

Galileo HAS high-level architecture. (Image: GSA)

Galileo HAS high-level architecture. (Image: GSA)

HAS Initial Service

HAS Phase 1 will cover the provision of an initial Galileo HAS resulting from the implementation of a high-accuracy data-generation system that processes Galileo data only.

Phase 2 will see full provision of the Galileo HAS, meeting its target performance of 20-cm worldwide positioning accuracy after 2024.

Through the HAS, Galileo will offer a unique service with the transmission of corrections directly via Galileo satellites, allowing free high-accuracy positioning globally, for everyone.

About the Author:


Senior Editor Tracy Cozzens joined GPS World magazine in 2006. She also is editor of GPS World’s newsletters and the sister website Geospatial Solutions. She has worked in government, for non-profits, and in corporate communications, editing a variety of publications for audiences ranging from federal government contractors to teachers.

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