Central Alliance Introduces GroundSat
GroundSat, developed by Central Alliance Applied Technologies and powered by Utilis, is an innovative new technology using analysis of synthetic aperture radar (SAR) satellite data. The technique measure soil moisture levels below ground level. This information is used to assess sites and to address geotechnical risks and drainage issues before they have an impact on critical infrastructure, construction projects and development sites.
The information is provided as a sub-soil water content analysis undertaken on SAR data acquired from a satellite, processed by Utilis algorithms and then presented graphically as a ‘heat’ map. The data offer a snapshot of the water content in the analysed location on a specific date. Repeat surveys can be undertaken to assess how the ground saturation changes over time and seasonally.
- Early identification of potentially problematic areas of saturated ground that could affect critical infrastructure, construction sites and developments.
- Assessment of the impact of climate change on infrastructure resilience fIdentification of third-party impacts on a site.
- Fully remote assessments of sites.
- Wide area coverage that provides a snapshot of saturated ground and potential leaks at any given time.
- Many airborne systems use remotely sensed optical data that only enable analysis of the surface. The SAR from the spaceborne sensor can actively penetrate through vegetation and can ‘see’ into the ground. fIndependent of weather conditions, day or night with a regular satellite revisit time.
- Identifies water directly and not the effects of water.
- Significant benefits for geohazard identification, particularly when combined with other data sets such as digital elevation models.