Galileo High Accuracy Service Signal in Space Interface Control Document published
The EU Agency for the Space Programme (EUSPA), together with the European Commission (EC) and the European Space Agency (ESA), publishes the first Galileo HAS Signal in Space Interface Control Document.
Galileo offers very interesting features and benefits for users of GNSS systems. It is a more modern multipath-resistant signal that transmits on multiple frequencies and is under civilian control. In addition, it is also fully interoperable with other GNSS constellations.
In addition, in the short-medium term, it will provide several differentiating services that are currently not offered by any other constellation worldwide. The next services it will offer are: High Accuracy Service (HAS), Galileo Open Service Navigation Message Authentication (OS-NMA) and Galileo Signal Authentication Service (SAS).
The first Galileo HAS User Interface Control Document has recently been published, presenting the general design of Galileo and the description of the HAS header and message. In addition, the encoding/decoding process of the HAS message and the application of its corrections are described.
This publication brings Galileo, Europe’s Global Navigation Satellite System (GNSS), closer to declaring the start of initial services for its High Accuracy Service (HAS).
More information here.