Evaluation of Galileo Has Sis and Idd Channel Impact on the User Performance

Many industrial and scientific applications rely on high accuracy positioning. With the advancements of modern Global Navigation Satellite Systems (GNSS) constellations and the release of new services, access to a real-time high-accuracy positioning anywhere in the world is a reality. To enable real-time Precise Point Positioning (PPP), Galileo High Accuracy Service (HAS) offers corrections without needing any additional infrastructures on the user side. In this paper, we compare the user positioning performance obtained with HAS corrections received via Internet Data Dissemination (IDD) and Signal-In-Space (SIS) using the software JRC User Navigation Engine (JUNE), which implement the Galileo HAS reference user algorithm developed at the Joint Research Centre (JRC). The comparison is carried out using stations of the International GNSS Service (IGS) located throughout the world as well as a receiver located at the JRC site in Ispra, Italy. The goal of the paper is to evaluate the achievable performance using the different HAS corrections and and review the future developments of the JUNE software.