Our technique main characteristics
It is millimeter sensitivity to small deformations
The sophisticated data processing algorithms allow ground deformations to be detected and measured to millimetric accuracy. Technique reliability has been validated by comparisons with high precision GPS surveys, topographic leveling, inclinometer readings and more.
It is capable of measuring historical deformation
An archive of radar images acquired by various satellites makes it possible to analyze historical ground movements for many areas of the world starting from 1992. As a result historic ground deformation can be measured retroactively, something few or no other techniques can do, and a significant advantage when no other survey data are available.
It is capable of analyzing deformation evolution over time
The multi-image makes it possible to monitor the evolution of ground movement over time and to identify features such as seasonal trends. Time series of ground deformations are provided.
It can identify non-linear movements
Recent enhancements have made it possible to analyze ground deformation affected by nonlinearities and abrupt changes in behavior.
It can be used to determine both vertical and east-west horizontal ground movement
When both ascending and descending orbit satellite images are used it is often possible to identify both the vertical and horizontal (east-west) components of ground movements. This information can be fundamental when ground motion has a significant horizontal component such as with landslides or the edges of subsiding basins.
It is scalable
Satellite techniques allow large areas up to 10,000 km2 to be monitored for a fraction of the cost of traditional ground-based techniques, covering all size areas with high precision measurements, providing a synoptic view of reservoirs, cities, floodplains or mountain ranges.
It is non-intrusive and non-destructive
There is no contact with the area of interest. Motion information for hundreds or thousands of points can be derived rapidly without the need to go into the field. Data can be collected for remote or inaccessible areas.
It is complementary with in-situ data and other geodetic techniques
An ideal complement to traditional ground measuring techniques such as GPS surveys, topographic leveling, microseismics, tiltmeters, etc. Integration can spatially extend the results of these techniques to much larger areas. Furthermore, the synoptic view can provide indicators for designing new or improve existing, ground-based monitoring networks.