Archived SAR satellite data is processed to measure retrospective ground movement.
Since the launch of the ERS satellite in 1992, Synthetic Aperture Radar (SAR) images containing information about historical ground displacement have been continuously acquired. Numerous further satellites have been launched since, providing higher resolution images, faster repeat times and data redundancy. Learn more about SAR Data Coverage.
The culmination of numerous SAR datasets has led to a large archive of historical ground movement data, available for many parts of the world. In areas where satellites have acquired SAR images, SqueeSAR™ can be used to extract historical ground movements.
Results from SqueeSAR™ analysis consist of discrete ground measurement points, each of which has a temporal displacement. Data can be presented as single data points on a background map, or as interpolated data. Learn more about SqueeSAR™ Deliverables.
Analyzing SAR imagery with SqueeSAR™ provides retrospective ground movement maps to millimeter accuracy, for the ground displacements over:
- Oil and Gas reservoirs (oil, gas, CO2)
- Natural Hazards (ground instabilities, landslides)
- Energy Sector (geothermal, power plants, dams and reservoirs)
- Transport (roads, railways, bridges, pipelines)
- Mines (open pit, underground)
- Urban Areas (groundwater extraction, flood defenses, single buildings, legal disputes)
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