NHAZCA proposed a monitoring system based on satellite remote sensing techniques, specifically employing Satellite Image Processing with SAR Interferometry. This technique, which is valuable for detecting and monitoring millimetric displacements on a large scale, has been successfully applied to assess deformations in slopes, rock faces surrounding infrastructure, and structural works such as dams, hydroelectric plants, and urban areas.

Following an in-depth study phase of the area of interest, NHAZCA acquired a high-resolution SAR images spanning approximately 15 years. These SAR images were processed using proprietary algorithms, enabling the identification of displacements and deformations within the study area, with particular attention to phenomena along the slopes and around the infrastructures.

The analysis yielded a series of measurement points (PS, persistent scatterers), revealing the temporal displacement patterns of these points and providing a historical analysis of deformations in the area of interest. Based on these findings, the monitoring system was further enhanced by installing artificial measurement points (corner reflectors) to increase detail in more complex zones covered by vegetation. Subsequently, a preventive maintenance plan was initiated to mitigate potential risks.

The project demonstrated the effectiveness of remote monitoring techniques in the risk prevention and management for hydroelectric infrastructure in mountainous environments. NHAZCA’s thorough approach provided a detailed, continuous overview of the structural conditions in the monitored areas, enabling data-driven and timely decision-making.