Construction sites
Compare changing ground surfaces with planned work zones across a large site. Review when and where changes appear in the satellite record, then use the mapped areas to focus the next site visit.
Satellite monitoring for earthworks.
See where work areas change. Follow the activity and decide where to check next.
We analyse satellite radar history to map surface changes across your sites. Start with a scoped review of one site, then agree repeat analysis where it is useful.
What you receive
See changing work areas between visits.
Review activity across one site or several locations. Compare the changed footprint with your work zones and dates to decide where to check next.
We run a scoped satellite review and deliver the map, observation history and locations for follow-up.
- Activity map
- Mapped change footprints with their area, observation dates and supporting satellite passes, overlaid on your site and work-zone boundaries.
- Change history
- First and latest observations, persistence across dates and agreement between radar viewing directions. Missing coverage stays separate from no detected change.
- Review report and GIS files
- A short interpretation with locations to check, GeoJSON boundaries and raster layers. Source observations, processing settings and versions stay with the results.
Applications
Keep track of work across larger areas.
Road and utility works
Follow surface changes along long work corridors between field visits. Compare activity around work zones, compounds and access routes with the construction plan to identify sections that need a closer check.
Quarries
Review changes around working faces, haul routes and material-handling areas across the quarry. Compare repeat observations to see where disturbed ground is expanding or persisting, then direct field checks to those areas.
Landfills and remediation
Follow surface changes around active cells, cover works and restoration areas between visits. Keep a dated record of the affected areas to help plan inspections and compare observations with reported site work.
Capabilities
Surface activity, observed from orbit.
We compare Sentinel-1 radar intensity with the site's history. This shows changes in surface response, not ground displacement or excavated volume.
Radar works through clouds. Viewing geometry, moisture and observation coverage remain part of the review.
For ground movement, see Pulse. For quantities from drone surveys, see Atlas.
Satellite methods
- Historical baseline
- Compare new radar observations with quieter periods in the site's archive, rather than treating every difference between two images as new work.
- Independent viewing directions
- Analyse ascending and descending satellite passes separately. Where both observe a change, record the additional support; keep single-direction findings visible.
- Activity, not excavated volume
- The mapped area is a changed surface footprint. It does not measure excavation depth or cut/fill. Rainfall, soil moisture and other surface changes also need consideration during review.
- Traceable delivery
- Results retain acquisition dates, source references and processing records. Use GeoJSON, GeoTIFF and tabular outputs in your existing mapping and reporting tools.
Delivery
Start with one site and a period to review.
Tell us where the work is and what activity you want to understand.
Share the review area
Send a boundary, dates and any planned work zones.
Agree the study
We check satellite coverage and agree outputs, timing and cost.
Review and follow up
Use the mapped changes to plan site checks. Add repeat analysis around the work schedule if useful.
Does this measure excavation volume?
No. It maps changed surface footprints, not excavation depth or cut/fill. Atlas can measure quantities from suitable drone surveys.
Does a changed area always mean work took place?
No. Rainfall, soil moisture and other surface changes can affect radar response. We review the observation history and site context before interpreting a change.
How often can you update the results?
We agree the review schedule after checking coverage. New findings depend on suitable satellite observations; every update shows its observation dates.
Can we start with a past period?
Yes. We check the available archive for your dates and area, then scope a one-off review or repeat analysis.