9:30 AM - 9:45 AM
[HDS09-03] GeoGuard: low-cost GNSS sensors for the continuous monitoring of landslides and structures
Keywords:Monitoring, GNSS, GPS, Landslide, Structures, low-cost
In 2015, through a partnership with the Italian company Softeco, GReD started GeoGuard, an innovative end-to-end service for the continuous monitoring of landslides and structures by means of single-frequency GNSS low-cost receivers and antennas. GeoGuard provides accurate positioning with centimeter-level accuracy in near real-time, or millimeter-level accuracy for daily/sub-daily solutions. The GNSS network observations are processed by means of both Bernese software, and an ad-hoc evolution of goGPS, a free and open source positioning software package developed by the GReD team. A software platform was developed for the management of a GNSS positioning service, and for the visualization and delivery of results. Currently, GeoGuard uses GPS L1 observations for its operational activities; however, promising results are being obtained with the addition of Galileo E1 observations, especially for sites with limited sky visibility, and to improve the accuracy of sub-daily (e.g. hourly) solutions. Currently, the GeoGuard service is operational on two landslides, a highway bridge, a dam, and two penstocks.