ASSET SENSING

Satellite asset monitoring · France

Know when the ground under your assets moves.

Asset Sensing watches pipelines, rail lines, dams, mines, solar farms and insured sites from orbit. We measure millimetre-scale ground motion, flag new works and floods near your assets, and tell you which alerts deserve a site visit.

Set up a watch See the signals
Signals
Motion · Change · Flood
Resolution
30 cm → 30 m
Languages
Français · English
Asset watch · Corridor A Synthetic demo
Segment
—
Mean velocity · line of sight
—
Displacement · 12 months
—
Status
—
Displacement, mm31 passes · 12-day

    Stable < 3 mm/yr Watch 3–8 Alert ≥ 8 Encroachment
    Synthetic demo: a schematic 60 km corridor with invented values, showing what a watch report contains. The thresholds are examples; on a real project we set them with you, asset by asset.

    Signals

    Four things we can watch for you, from orbit.

    Each signal answers a different worry. Most watches combine two: radar for movement you can’t see, optical imagery for changes you can.

    InSAR · radar

    Ground motion

    Millimetre-scale displacement of the ground and the structures on it, measured from repeated radar passes, day or night and through cloud.

    Measures
    Velocity (mm/yr) and time series per point or asset segment
    Cadence
    Every new radar pass, typically 6–12 days with Sentinel-1
    Data
    Sentinel-1, EGMS, X-band SAR, Gaofen-3, LT-1 (L-band)
    You get
    Velocity maps, time series, a status per segment
    VHR optical

    Change & encroachment

    New structures, earthworks, excavation and vegetation growth near your assets, compared image to image at 30–80 cm.

    Measures
    New objects and disturbed ground inside a buffer you set
    Cadence
    Monthly, quarterly or after an event
    Data
    SuperLens, EarthScanner, DailyVision, Pléiades Neo, WorldView, PlanetScope
    You get
    Before / after pairs, flagged changes as GeoJSON, a short report
    Radar · floodIn development

    FloodSAR

    All-weather flood extent over your sites, how long they stayed under water, and impact reports for physical-risk disclosure under the EU Taxonomy and CSRD ESRS E3.

    Measures
    Flooded area, duration, exposed assets
    Cadence
    After each event, plus back-analysis of past floods
    Data
    Sentinel-1, commercial SAR
    You get
    Flood layers, impact report, alerts after an event
    Optical · EUDRIn development

    Forest Watch

    Deforestation checks on agricultural supply plots against the EUDR cutoff of 31 December 2020 (Regulation (EU) 2023/1115), from Sentinel-2 time series.

    Measures
    Tree-cover loss per plot since the cutoff date
    Cadence
    At each due-diligence cycle
    Data
    Sentinel-2 time series, VHR spot checks
    You get
    Report, GeoJSON and due-diligence data

    Assets

    What we watch, and the question behind it.

    A watch starts from a worry about a specific asset. If yours isn’t listed, it is probably close to one that is.

    Pipelines & power lines

    Is anyone building, digging or planting inside the right-of-way?

    Change & encroachment · ground motion on unstable slopes
    VHR optical, Sentinel-1

    Rail & roads

    Which embankments and cuttings are settling, and how fast?

    InSAR ground motion
    Sentinel-1, EGMS, X-band SAR

    Dams & embankments

    Is the structure, or the slope behind it, moving beyond its seasonal cycle?

    InSAR time series, trend vs season
    Sentinel-1, X-band and L-band SAR

    Mines & quarries

    How much material moved this quarter, and are the benches stable?

    Stereo DSM differencing · InSAR
    SuperLens, Pléiades Neo tri-stereo, GF-7, SAR

    Solar & wind farms

    Are vegetation or erosion threatening the site and its access tracks?

    VHR change detection
    DailyVision, EarthScanner, Sentinel-2

    Insured property

    Which insured sites were flooded, and for how long?

    Radar flood extent, through cloud
    Sentinel-1, commercial SAR

    Agricultural supply plots

    Was any plot cleared of forest after 31 December 2020?

    Forest Watch (in development)
    Sentinel-2 time series, VHR checks

    Coastal sites

    How fast is the shoreline moving towards our site?

    Shoreline extraction over decades
    Landsat archive, VHR optical

    Services

    Set up the watch. Run it. Sign it off.

    Take the whole loop, or only the part you need. Supervision-only projects plug in wherever you are.

    1. 01 → Acquisition

      Set up the watch

      We agree what “movement” or “change” means for each asset, then source the baseline and the passes that will measure it.

      • Asset inventory and buffers from your GIS, KML or shapefile
      • Baseline from radar and optical archives
      • New tasking with cloud-cover thresholds
      • Stereo & tri-stereo for 3D baselines
      • Licensing handled for your use
    2. 02 → Processing

      Run it

      Every pass goes through the same documented chain, so a change in the numbers is a change on the ground, not in the method.

      • Orthorectification & co-registration
      • Atmospheric correction, pansharpening & mosaicking
      • InSAR time series (persistent scatterers, SBAS)
      • Change detection with thresholds per asset
      • DSM / DTM from stereo
      • GeoTIFF, COG, GeoPackage, GeoJSON or web map
    3. 03 → Supervision & advisory

      Sign it off

      An independent check on what the alerts mean, whether the watch is run by us, by a provider or by your own team.

      • Needs assessment & feasibility
      • Tender specifications (cahier des charges)
      • Vendor selection & contract review
      • Quality control of deliverables
      • Plain-language reports for engineers, insurers and auditors
      • Training for in-house teams

    An alert is only useful if you can trust it.

    Sensor-agnostic

    We choose the sensor per asset and per question, from free Copernicus data to a 30 cm tasking, and tell you which before you spend.

    Evidence with every flag

    Each alert comes with the before / after or the time series behind it, the method used, and what the data cannot tell you.

    In France, for anywhere

    We work in French and English, know the French and European references (IGN, Copernicus, EGMS), and can host data in the EU on request.

    Data sources

    The right sensor for each asset.

    Radar for motion, optical for change, archives for history. Here are the sources we build watches from, including the Chinese very high resolution and radar constellations.

    Source Sensor Ground resolution Revisit Role in a watch
    Open data & public programmes
    Sentinel-1 Copernicus C-band radar (SAR) 5 × 20 m 6–12 days Ground motion · floods
    Sentinel-2 Copernicus Multispectral, 13 bands 10 m 5 days Vegetation · land change
    Landsat 8 & 9 USGS · NASA Multispectral + thermal 30 m 8 days Long history · shoreline
    EGMS Copernicus InSAR ground-motion product Points · 100 m grid Periodic updates Regional motion screening
    BD ORTHO® & LiDAR HD IGN, France Aerial orthophotos & lidar 20 cm · ≥ 10 pts/m² National programme Reference · terrain
    Commercial
    PlanetScope Planet Multispectral, 8 bands ≈ 3 m Daily Frequent change checks
    Pléiades Neo, WorldView & others Very high resolution optical 0.3–0.5 m On-demand tasking Encroachment · detail
    ICEYE, Capella, Umbra X-band radar, day & night 0.25–3 m On-demand tasking Detailed motion · events
    Chinese very high resolution optical
    SuperLens China VHR optical, stereo & tri-stereo 30 cm · 15 cm SR Archive · on-demand tasking 3D baselines · detail
    EarthScanner China Wide-swath VHR optical, 150 km swath 50 cm Most countries in a few days Wide-area baselines
    MS8 EarthScanner China Wide-swath VHR optical, 136 km swath 50 cm Archive · on-demand tasking Wide-area baselines
    GF-7 Gaofen-7 · China Stereo pairs for 3D (DSM / DTM) 65 cm Archive 3D · volumes
    DailyVision China High-revisit VHR optical 75 cm High revisit · on-demand tasking Frequent VHR checks
    Gaofen-2 GF-2 · China VHR optical 80 cm Archive Archive baselines
    Chinese radar (SAR)
    Gaofen-3 GF-3 01/02/03 · China C-band SAR, spotlight to global modes 1–500 m Archive · on-demand tasking Motion · floods
    LT-1 China L-band SAR 3–30 m Archive · on-demand tasking Motion in vegetated areas
    Airborne
    Drone & airborne When orbit can’t resolve it ≈ 2–5 cm On request Site inspection

    These are nominal values. Actual revisit depends on latitude, viewing angle and cloud cover; we give you a realistic cadence for each asset before the watch starts.

    Chinese VHR scenes are delivered as L1 bundles (panchromatic + multispectral). We orthorectify, pansharpen and mosaic them, and build DSM / DTM from GF-7 and SuperLens stereo. “SR” is a super-resolution product derived from the 30 cm imagery, not a native resolution. L-band radar keeps coherence better over vegetation, which helps measure motion along vegetated slopes and corridors.

    Contact

    Tell us what you need to keep an eye on.

    Send us the assets and the worry behind them. We come back with a first opinion on feasibility: which signals fit, how often, and what a watch would deliver.

    What helps us scope quickly

    • Your assets: a list, coordinates, or a KML / shapefile / GeoPackage
    • What worries you: settlement, landslides, third-party works, floods, deforestation
    • How often you need to know, and who acts on an alert
    • A budget range, even a rough one

    Or email us directly: contact@groundimagery.com