Monitoring Critical Assets with InSAR

Ground Subsidence Monitoring

Left: Regional subsidence rate map | Right: Time-series deformation at Point P1

As a slow-onset geological hazard, ground subsidence has become a global environmental concern. While traditional methods like leveling and GPS offer high accuracy, they suffer from high costs, low efficiency, and limited spatial coverage. InSAR delivers millimeter-level deformation data with continuous spatial coverage, accurately revealing spatiotemporal evolution characteristics of subsidence.

Dam Deformation Monitoring

Left: Dam deformation rate map | Right: Time-series deformation at Point P1

Dam safety monitoring is crucial for water resource infrastructure. InSAR overcomes limitations of traditional methods by providing high-precision, large-scale, non-contact measurements. It captures long-term deformation dynamics, monitors operational performance, and assesses structural degradation caused by earthquakes or floods.

Bridge Deformation Monitoring

Left: Bridge thermal expansion coefficient map | Right: Time-series deformation at Point P1

InSAR revolutionizes bridge monitoring by delivering millimeter-level accuracy over kilometer-scale coverage. The technology enables whole-structure monitoring without installing reflectors, providing safe, long-term deformation data for assessing structural responses to thermal changes and dynamic loads.

Mining Subsidence Monitoring

InSAR has become vital for mining deformation monitoring. By analyzing multi-temporal SAR phase differences, it detects millimeter-scale surface movements, supporting mine safety management, hazard early warning, and environmental impact assessments.