A new tool for Real-Time GNSS data analysis starting from RING network data acquisition.
Miele P., Avallone A., D'Ambrosio C., Falco L., Jiang X., Ge M., Xie W., Cecere G., Devoti R., Famiglietti N.A., Grasso C., Pietrantonio G., Vicari A.
Considering its $\sim 250$ real-time transmitting remote sites, the INGV RING GNSS network allows to measure deformation at different spatial and temporal scales in the Eurasia-Africa plate boundary region. The data streaming is managed by the acquisition centres in Southern Italy (Grottaminarda, AV) and the synchronization between the sourcetable (metadata) and the RING database guarantees reliable real-time products. GNSS data analysis has been performed by using the RTPPP software developed by GFZ (EWRICA project; Ge $et al.$, 2012). The software allows obtaining PPP products with increasing accuracy (standard PPP, PPP-AR and PPP-RA, Ge $et al.$, 2012). On 24 h data, the ambiguity resolution (PPP-AR) allows accuracies of 1 and 2 cm for the horizontal and vertical components, respectively, at the best sites. Moreover, the application of regional augmentation (PPP-RA) ensures even better accuracies in the real-time products. In addition, an algorithm to detect co-seismic static offsets from real-time time series has been implemented. The first outcomes make the RING a crucial contribution to warning systems in case of low-to-moderate (M 5.5--6.5) earthquakes in Italy.