Statistical analysis of the results: assessment of the impact on aerospace and ground systems

The aim of this work package (WP) 5 is to specify the impact of TID in EGNOS, N-RTK and HF systems through statistical correlation of the performance data recorded from system operators and of TID detection results. Within the HF-TID-method in TechTIDE WP2 we use Digisonde-to-Digisonde measurements to determine characteristics of TIDs appearing in the region of the ionospheric reflection area between a transmitting and a receiving Digisonde. One of the TID characteristics is the Angle of Arrival (AoA) of the received radio signal, which can be divided into azimuth and elevation. In this analysis, we look for a correlation between TIDs and the variation of the azimuth of the received radio signal. In N-RTK, statistical tests have been applied over the entire data tests showing NRTK solutions are close to the solutions implementing a dual frequency solution methodology. Additionally, it was possible to correlate presence of MSTID with the degradation in the NRTK solutions.