GNGTS 2023 - Atti del 41° Convegno Nazionale

Session 3.3 ______ ___ GNGTS 2023 GNSS cost-effective devices and multi-purpose developments and applications D. Zuliani 1 , L. Tunini 1 , A. Magrin 1 , C. Ponton 1 , M. Bertoni 1 , M. Chersich 2 , D. Curone 2 , F. Di Traglia 3 , M. Severin 4 , S. Parolai 5 1 National Institute of Oceanography and Applied Geophysics - OGS 2 YETITMOVES S.r.l., c/o EUCENTRE, University of Pavia, Pavia, Italy 3 National Institute of Geophysics and Volcanology (INGV), Naples, Italy 4 SoluTOP SAS, Pavia di Udine, Italy 5 University of Trieste, Trieste, Italy The monitoring of the surface deformation in a particular region has traditionally been the prerogative of the scientific communities capable of affording high-price geodetic-class instruments, capable of tracking the tiny movements without losing precision. However, in the last decades, the Global Navigation Satellite System (GNSS) technology has made outstanding advances in low-cost sensors, which are currently available to the mass market. The National Institute of Oceanography and Applied Geophysics – OGS has decided, in the last years, to invest resources in the development of these cost-effective devices and in the performance testing in different application fields, from surveying to crustal deformation studies. In this work, we first present LZER0, a cost-effective and multi-purpose GNSS platform developed by OGS in collaboration with a private company (SoluTOP SAS), suitable not only for surveying measurements, but also for monitoring tasks. The LZER0 platform is a complete system that includes the GNSS equipment and the web portal where the results are displayed, after being processed using the RTKLIB software package, with positioning both in real-time and post-processing. Thanks to its flexibility and equipped with an easy-to-use hardware and software, LZER0 can be easily deployed to perform various tasks in the research, educational, or professional sectors (cadastral, automotive, monitoring) (Zuliani et al., 2022-a). Secondly, we present a network based on single-frequency Global Positioning System (GPS) sensors for monitoring an active landslide in the Carnic Alps, North-Eastern Italy. We show that the system, composed of 12 single-frequency GPS stations, one seismometric station coupled with a single-frequency GPS instrument for real-time monitoring, and one permanent dual-frequency GPS station located in a stable area, is a valuable, flexible, and cost-effective tool for quick landslide characterization, and has high potential to be used as a landslide early warning system in case of emergency situations (Zuliani et al., 2022-b).