Terrestrial Interferometry

Terrestrial Interferometry allows the monitoring of displacements of both anthropogenic elements (structures and infrastructures) and natural elements (landslides, rock slopes, volcanoes, etc.). The high accuracy in the measurements without any installation of artificial reflectors and the high data sampling frequency, allow to collect information simultaneously on the whole irradiated scenario, with sub-millimeter accuracies.

Moreover, by the SAR configuration (with the sensor moving along rail) and special algorithms developed by NHAZCA allowing the integration with 3D models collected by Laser Scanner surveys, 3D displacement maps can be achieved for the characterization and mapping of unstable sectors.

Thanks to quick installation (such as the Quick Installation Basement QUIB) and data processing proprietary protocols, NHAZCA can provide prompt intervention monitoring services for early-warning and civil protection purposes.

 

 

 

Dynamic telemonitoring for civil engineering purposes

Terrestrial Interferometry allows, through specific installation configurations, the simultaneous displacements measurement of a large number of points in the instrumental field of view, with high sampling rate (up to 200 Hz) and high spatial resolution (0.5 m along the line of sight). The interferometric technique allows, through the comparison between the phase information of signals emitted in different time intervals, very high accuracies (up to 1/100 mm) to be achieved.

These information, fully remotely collected without any additional installation, combined with quick installation systems, make this technique suitable and reliable for civil engineering applications such as quick static and dynamic monitoring of structures and infrastructures, both for preliminary testing purposes and for the state of conservation periodical monitoring.

 

 

Main projects

Continuous monitoring of a strategic transportation asset
Early Warning monitoring of a major infrastructure
Structural health monitoring of an iron bridge
Remote analysis of the deformational behavior of a reilway bridge
Analysis of the deformational behavior of a dam
Continuous control of a road embankment stability

Videos

3D time laps displacement by Terrestrial SAR Interferometry

Installation of a TinSAR monitoring platform

Installation of a TInSAR montiroing platform by QUIB (Quick Installation Basement)

3D surveying and static/dynamic tests of a bridge by remote sensing techniques

Publications

Beninati L., Brunetti A., Caruso C., Mazzanti P., 2015. Structural Health Characterization of an Old Riveted Iron Bridge By Remote Sensing Techniques. Proceedings of the 7th International Conference on Structural Health Monitoring of Intelligent Infrastructure (Turin, Italy, 1-3 July 2015)
 
Mazzanti P., Bozzano F., Brunetti A., Esposito C., Martino S., Prestininzi A., Rocca A., Scarascia Mugnozza G., 2015. Terrestrial SAR Interferometry Monitoring of Natural Slopes and Man-Made Structures. G. Lollino et al. (eds.), Engineering Geology for Society and Territory, Volume 5, Springer International Publishing, Switzerland, 189-194.
 
Mazzanti P., 2012. Remote monitoring of deformation using Terrestrial SAR Interferometry (TInSAR, GBInSAR). Geotechnical News, Marzo 2012, pp.31, ISSN: 0823-650X.