4DBloc is a GNSS‑based sensor designed to deliver real‑time monitoring of ground surfaces and structural movement with high precision.
Developed and validated in partnership with the French National Institute of Geographic and Forest Information (IGN), 4DBloc was created to offer a robust, simple, cost‑effective, and highly accurate GNSS positioning solution for a wide range of monitoring applications.
4DBloc is a simple, highly reliable GNSS sensor that requires no calibration and virtually no maintenance—unlike many other instruments in its category. Its extremely low power consumption allows it to operate using a single solar panel installed on site, making it ideal for long‑term monitoring in remote or difficult‑to‑access locations.
All 4DBloc data is processed through a dedicated, fully automated algorithm developed to deliver accuracy within a few millimeters, depending on site conditions and satellite visibility.
4DBloc is suitable for a wide range of monitoring scenarios, including:
Its versatility makes 4DBloc a powerful tool for both structural and geotechnical monitoring needs.
Each 4DBloc sensor communicates with a gateway station via radio transmission. The gateway then automatically transfers the data in real time over the internet.
Millimetric positioning is achieved through two key components:
This combination ensures precise, continuous deformation tracking across a wide range of environments.
Backed by 20 years of experience and continuous in‑house development.
Supported by an extensive network for rapid deployment and on‑site assistance.
From installation to delivery of pre‑processed data in an accessible online platform.
Focused on developing solutions that address real‑world monitoring challenges.
Built around continuous data quality control to ensure accurate, dependable results.
