4DBloc is a GNSS-based sensor that provides real-time monitoring of ground surfaces and built structures.
4DBloc was developed and tested in cooperation with the French National Institute of Geographic and Forest Information (IGN) with the shared purpose of creating a GNSS-based position measurement system that is robust, simple, cost-effective, and accurate.
Accurate, Robust, and Economical GNSS Deformation Sensor
4DBloc is a very simple sensor that does not require calibration or special maintenance, and unlike other sensors, it does not require maintenance.
It also does not consume much energy and can be powered by a single solar panel installed at the same time.
It is the ideal instrument for the long-term monitoring of locations where access is a challenge. 4DBloc data is processed by a dedicated, unique, and fully automated algorithm to deliver a level of accuracy within a few millimeters, depending on circumstances and location.