Enhancing GNSS Situational Awareness by Monitoring the New Galileo Services

Global Navigation Satellite Systems (GNSS) have become a critical service and this has increased the need for GNSS situational awareness. On top of this, the field is rapidly changing with interference becoming more prominent and new GNSS services being developed, highlighting the fact that flexibility and adaptability are needed from the GNSS monitoring systems. With the emergence of new Galileo features, such as the Open Service Navigation Message Authentication (OSNMA) and the High Accuracy Service (HAS), monitoring systems have the opportunity to leverage these new services to enhance GNSS situational awareness. The Finnish Geospatial Research Institute (FGI) has developed an open GNSS situational awareness service called GNSS-Finland, available at https://gnss-finland.nls.fi. GNSS-Finland monitors the signal quality, detects potential interference, and informs the users of the expected level of performance of different services around 47 stations of the Finnish Continuously Operating Reference Station (CORS) network FinnRef. Recently the GNSS-Finland has been extended with capabilities to monitor and leverage the OSNMA and the HAS around the FinnRef stations. Due to the novelty of both the OSNMA and the HAS, custom software solutions were needed to integrate these services into GNSS-Finland. We will give an overview of GNSS-Finland and its flexible architecture and the integration of the new Galileo services into GNSS-Finland, and finally we discuss from the monitoring system point of view how these new services can be leveraged.