GROUND MOTION. VERIFIED. INTERPRETED.

InSAR Monitoring & Ground Motion Intelligence

RAUZ combines InSAR ground-motion data with survey, geotechnical, groundwater and environmental evidence to screen deformation, validate trends and support independent engineering interpretation worldwide.

Discuss Your Project Request a Quote

InSAR Monitoring

Wide-area ground motion is useful only when it becomes engineering evidence.

RAUZ uses InSAR as a remote-sensing evidence layer for ground, infrastructure and environmental monitoring. The service connects satellite-derived displacement with survey, geotechnical instruments, groundwater, weather and project records so that movement can be screened, tested and interpreted in context.

Observe

See movement beyond the instrument footprint

Use InSAR time series and spatial patterns to identify where surface motion is occurring across a corridor, urban area, slope, mine, water-related asset or wider area of interest.

Validate

Test whether the pattern is credible

Review line-of-sight geometry, temporal behaviour, coherence or quality indicators, reference conditions and consistency with independent measurements before assigning engineering significance.

Interpret

Connect motion with the physical context

Compare the satellite record with geology, groundwater, construction sequence, rainfall, survey and in-situ monitoring to identify what the evidence supports—and what it does not.

RAUZ sits above the measurement layer. We are not presented as a satellite operator and we do not require a project to replace its existing instruments or monitoring platform. The scope starts with the engineering or environmental question, then defines the InSAR source, supporting ground evidence and review method needed to answer it.

Explore InSAR Intelligence Monitoring Intelligence

What InSAR Measures

InSAR measures change in radar range over time—not “geology from space.”

Synthetic Aperture Radar Interferometry compares radar observations acquired at different times. The result is displacement along the satellite line of sight. With appropriate processing and acquisition geometry, InSAR can reveal small ground-motion patterns over wide areas and long time periods.

LOS

The fundamental measurement is along the satellite line of sight. It is not automatically a full 3D movement vector.

Time

Each suitable measurement point can carry a displacement time series, allowing trend and rate review rather than a single snapshot.

Area

Satellite coverage can reveal movement patterns well outside a conventional local instrument network.

Context

Engineering meaning still depends on geology, asset geometry, groundwater, construction history and independent observations.

InSAR output	What it can support	What it does not prove by itself
Line-of-sight displacement	Direction and magnitude of radar-range change relative to the selected reference	The complete 3D movement vector
Average velocity	Screening for persistent or spatially concentrated motion	The physical cause of the motion
Time series	Review of onset, persistence, acceleration, slowing or seasonal behaviour	That the trend is caused by one specific construction or natural mechanism
Spatial pattern	Comparison of local versus wider-area movement and prioritisation of investigation zones	Subsurface stratigraphy, groundwater condition or failure mechanism without supporting evidence

ESA describes Sentinel-1 as an all-weather, day-and-night C-band radar mission, while the Copernicus European Ground Motion Service distinguishes line-of-sight products from products calibrated with GNSS or reprojected into vertical/east-west components. RAUZ therefore treats acquisition geometry and product definition as part of the technical review—not as metadata to ignore.

Site & Environmental Context

Terrain, climate, geology and land cover can change what InSAR can see—and what the movement may mean.

A responsible InSAR scope starts with the site rather than the satellite. RAUZ does not assign a generic ground profile to a country or region. For an actual project, official geological, hydrological, meteorological and project-issued information should be reviewed together with the radar product.

Surface condition

Vegetation and changing surfaces

Dense vegetation, agricultural change, snow, standing water or disturbed surfaces can reduce interferometric coherence. Stable urban features and persistent reflectors may provide stronger measurement density.

Terrain

Steep and complex topography

Satellite viewing geometry can create shadow, layover or weak sampling on certain slopes. Ascending and descending geometries may therefore provide different coverage and sensitivity.

Atmosphere

Atmospheric and moisture effects

Atmospheric path delay and changing surface moisture can introduce noise or apparent movement. Time-series processing, quality metrics and independent evidence are important before interpretation.

Ground model

Geology and stratigraphy

Surface displacement may be related to compressible deposits, soluble rocks, mining, dewatering, slope instability, tectonics or other mechanisms. The site ground model is needed to separate plausible explanations.

Water

Groundwater and rainfall

Piezometric change, abstraction, recharge, dewatering and rainfall can be critical explanatory variables. Satellite movement should be compared with available hydrogeological records rather than interpreted in isolation.

Construction

Project sequence and asset response

Excavation, tunnelling, loading, embankment construction, foundation works and dewatering can change the timing and spatial pattern of movement. Project chronology belongs in the analysis.

Project-specific evidence hierarchy: official geological survey and hazard mapping → project GI and hydrogeology → monitoring plan and baseline → construction records → satellite product metadata → ground instruments and survey → engineering interpretation.

Applications

Use InSAR where spatial history matters more than another isolated point.

The same remote-sensing method can answer very different questions. RAUZ defines the review around the asset, the expected movement mechanism, the decision horizon and the evidence already available.

Rail, metro & tunnels

Historical baselining, settlement screening, dewatering influence, corridor-wide movement and comparison with prisms, levelling, GNSS, inclinometers and piezometers.

Roads, bridges & linear assets

Long-corridor screening for subsidence, slope movement, embankment behaviour and localised deformation that may justify targeted inspection or instrumentation.

Slopes & landslides

Spatial screening of slow-moving slopes where radar geometry and coherence are suitable, combined with rainfall, groundwater, GNSS, survey and subsurface deformation evidence.

Buildings & urban development

Review of settlement patterns around excavations, basements, tunnelling, dewatering or other activities, including movement outside the expected local influence zone.

Mines, tailings & ground extraction

Wide-area deformation review around pits, tailings facilities, underground workings, groundwater abstraction and other activities that can produce distributed surface response.

Dams, reservoirs & environmental assets

Ground-motion screening around large earthworks, slopes, reservoir margins or water-related infrastructure, integrated with project-specific hydrogeological and geotechnical monitoring.

Ground Validation

The strongest InSAR interpretation usually comes from a second, independent line of evidence.

Ground instruments and satellite measurements observe different components of behaviour at different spatial and temporal scales. RAUZ uses them as complementary evidence rather than treating one method as the universal replacement for another.

Monitoring question	Useful InSAR evidence	Typical complementary ground evidence	What the combination can test
Is settlement local or regional?	Spatial displacement pattern and time series	Precise levelling, settlement points, GNSS, total station	Differential versus widespread movement
Is an excavation or tunnel influence developing?	Surface movement footprint through time	Prisms, settlement points, inclinometers, piezometers, construction records	Timing, zone of influence and consistency with ground response
Is a slope moving?	Surface displacement pattern where geometry and coherence are suitable	GNSS, prisms, inclinometers, extensometers, groundwater and rainfall	Extent, rate, depth-related behaviour and hydrological relationship
Could groundwater be part of the mechanism?	Regional or local subsidence/uplift pattern	Piezometers, water-level data, abstraction/dewatering records	Temporal and spatial correlation with hydraulic change
Is a structure responding differently from nearby ground?	Available persistent-scatterer time series on the asset and surroundings	Prisms, tiltmeters, crack meters, GNSS, structural monitoring	Asset-specific versus background ground movement

These instrument examples are for preliminary technical discussion only. Final selection, location, precision, frequency, trigger criteria and response actions must be defined from the project’s risk questions, ground model, design requirements and local professional responsibilities.

Data Integration Data Diagnostics

RAUZ Workflow

Define the question first. Then build the evidence chain.

RAUZ uses a traceable workflow that separates acquisition and data-quality questions from engineering interpretation. The exact satellite source, processing route and update frequency are agreed project by project.

01 · FRAMEDefine the asset, area of interest, movement question, review period and decision that the monitoring must support.

02 · QUALIFYCheck available SAR history, geometry, expected coherence, product metadata, reference system and suitability for the site.

03 · CONNECTBring in survey, geotechnical, groundwater, environmental and project-event data that can test the satellite pattern.

04 · INTERPRETReview trend, rate, spatial pattern, uncertainty, timing and consistency with the plausible physical mechanism.

05 · ACTIssue prioritised findings, limitations, areas for verification and the next monitoring or engineering questions.

Historical baseline review where suitable archive data exist
Current or recurring ground-motion review
Ascending / descending geometry review where available
Quality and coherence screening
Cross-check with survey and in-situ instruments
Construction, rainfall and groundwater event correlation
Engineer-reviewed interpretation
Traceable reporting and follow-up actions

Priority Regions

One InSAR method, very different regional monitoring questions.

RAUZ serves the South Caucasus, European Union, United Kingdom, Middle East and Africa through an English-language, remote-first model. Regional pages should use local official sources; this global solution page therefore avoids inventing one “typical” geology for very different countries.

South Caucasus

Georgia’s National Environmental Agency officially monitors landslides, mudflows, rockfalls and groundwater, and in 2026 reported active installation of modern landslide monitoring equipment together with satellite-image processing using InSAR. For South Caucasus projects, RAUZ can combine satellite screening with official hazard mapping, local geology, rainfall, groundwater and project instrumentation. Georgia NEA source ↗

European Union

The Copernicus European Ground Motion Service provides harmonised Sentinel-1-derived ground-motion products across Europe, including Basic, Calibrated and Ortho products. RAUZ can use suitable public EGMS information as a screening or contextual layer, while project decisions still require local ground and asset evidence. Copernicus EGMS ↗

United Kingdom

British Geological Survey research has applied InSAR to ground-motion baselining and investigation in rural and semi-urban UK settings, while UK official guidance recognises subsidence and land instability as infrastructure concerns. UK interpretation may require careful treatment of vegetation, mining legacy, groundwater, compressible ground and shrink–swell behaviour depending on the site. BGS InSAR research ↗

Middle East

The Middle East cannot be reduced to a single ground model. Saudi Geological Survey, for example, documents both mountain-slope hazards and subsidence/ground-crack concerns associated with specific geological formations. InSAR can support wide-area screening, but interpretation should be anchored to the official geology, groundwater and project records for the actual location. Saudi Geological Survey ↗

Africa

Africa spans highly diverse climates, land cover, geology and infrastructure contexts, so RAUZ does not assign generic assumptions to the continent. Sentinel-1 provides global radar observation capability; project-specific work should combine the selected InSAR product with national geological, hydrological and meteorological sources and the client’s own ground evidence. ESA Sentinel-1 ↗

Official Evidence & Comparable Practice

International practice shows the value of combining wide-area satellite motion with local monitoring.

The examples below are published by the named organisations and are not RAUZ projects. They are included to show how InSAR is being used in public agencies, research and infrastructure monitoring.

Georgia · Public Agency

National Environmental Agency

Georgia’s NEA states that it monitors geological hazards including landslides, mudflows and rockfalls and has been installing modern monitoring equipment while processing satellite imagery with InSAR technology.

Official NEA source ↗

UK · Research

British Geological Survey

BGS reports using different InSAR techniques to evaluate long-term ground motion and states that interpretation relied on experienced geoscientists and supporting geological, groundwater, hazard and land-cover information.

Official BGS source ↗

Romania · Infrastructure

Bucharest Metro Line 5

Sixense’s official project page describes an integrated programme using more than 300,000 InSAR points together with automated total stations, piezometers, inclinometers, extensometers and environmental measurements.

Official Sixense case ↗

The common lesson is not that every project needs the same instrumentation. It is that satellite motion becomes more defensible when the spatial pattern, measurement quality, local ground condition and independent evidence are reviewed together.

Deliverables & Collaboration

Use the output to decide where to investigate, verify, instrument or continue watching.

RAUZ can work with asset owners, consultants, contractors, monitoring providers, InSAR processors, survey teams and local geotechnical specialists. The collaboration model is designed to retain existing field responsibilities while adding an independent interpretation layer.

Typical outputs

Engineering and environmental intelligence

Area-of-interest and movement screening
Historical baseline review
Velocity and time-series interpretation
Anomaly and priority-zone review
InSAR / survey / instrument comparison
Data-quality and limitation register
Engineer-reviewed technical memorandum
Recurring monitoring-intelligence report

Collaboration routes

Keep specialist roles clear

Satellite or commercial InSAR data provider
Local geotechnical / environmental consultant
Instrumentation and telemetry contractor
Survey / GNSS / total-station team
Project designer or Engineer of Record
Owner / operator monitoring team
RAUZ independent analytics and interpretation

A useful first brief is short.

Send the project location, asset type, area of interest, monitoring objective, available InSAR source if already procured, ground-monitoring data, relevant geology or GI, project stage and the decision your team is trying to make. RAUZ can then define the appropriate review depth and the evidence still required.

Discuss an InSAR Scope Request a Quote

Limits & QA/QC

An InSAR map is evidence. It is not a complete engineering conclusion.

RAUZ makes the limitations visible because they directly affect how much confidence can be placed in the result and whether another monitoring method is needed.

Line-of-sight geometry

InSAR measures movement projected along the satellite line of sight. Ascending and descending observations can provide different sensitivities; north-south motion is particularly difficult to resolve from near-polar SAR geometry.

Coherence and land cover

Vegetation dynamics, snow, standing water, surface disturbance and long temporal separation can reduce phase stability and measurement density.

Atmosphere and processing

Atmospheric effects and processing choices can influence apparent deformation. Product metadata, quality indicators, reference points and processing methodology should be reviewed.

Temporal cadence

Satellite acquisition and processing are not the same as second-by-second or minute-by-minute monitoring. The method must match the project’s required reaction time.

Mechanism

Surface motion does not by itself identify consolidation, groundwater withdrawal, tunnelling, mining, slope instability or another cause. The mechanism must be tested against site evidence.

Life-safety response

Where rapid movement requires immediate action, InSAR should not be treated as a standalone life-safety warning system. High-frequency local monitoring and a project-specific response plan may be required.

RAUZ QA/QC principle: qualify the satellite product, preserve provenance, review geometry and reference, check temporal/spatial consistency, compare independent evidence, document uncertainty and keep final interpretation subject to engineering review.

Why RAUZ

Independent interpretation without forcing a new measurement stack.

RAUZ is the environmental and engineering monitoring intelligence platform of Rauz Caucasus LLC in Tbilisi, Georgia. The InSAR service is designed for international, remote-first delivery and for projects that already have satellite data, survey teams, ground instruments or third-party monitoring platforms in place.

Vendor-neutral InSAR interpretation
InSAR + ground-monitoring integration
Data QA/QC before interpretation
Cross-source analytics and anomaly review
Groundwater, weather and construction context
Independent monitoring review
AI-assisted analysis with engineer review
Automated reporting with traceable evidence

Engineering Approach Global Delivery

Official References

Primary sources used for this technical discussion.

External sources are linked for technical context and verification. Their inclusion does not imply endorsement, partnership or that the referenced projects are RAUZ projects.

Frequently Asked Questions

Questions to settle before starting an InSAR monitoring scope.

What is InSAR monitoring?

InSAR monitoring uses repeated Synthetic Aperture Radar observations to measure changes in radar range between the satellite and stable measurement targets over time. It is especially useful for wide-area ground-motion screening, historical baselining and recurring deformation review where the acquisition geometry and surface coherence are suitable.

Does InSAR replace inclinometers, piezometers, GNSS or survey?

Usually not. These methods measure different aspects of behaviour. InSAR can extend spatial coverage and historical context, while ground instruments and survey can provide local, higher-frequency or subsurface information. RAUZ uses them as complementary evidence.

Can RAUZ use public InSAR data such as Copernicus EGMS?

Yes, where the public product is technically suitable for the question and location. In the EU, EGMS can provide a useful harmonised ground-motion layer. The product level, reference system, temporal coverage, line-of-sight geometry and quality information still need to be understood before engineering use.

Can RAUZ work with commercial InSAR providers?

Yes. RAUZ is vendor-neutral and can work with an agreed commercial or public source, provided the relevant product metadata, time series, quality information and usage rights are available for the review scope.

Can historical movement before construction be reviewed?

Potentially. The answer depends on suitable archived SAR imagery, surface coherence, acquisition geometry and the processing product available for the area and period of interest. Historical InSAR can be valuable for distinguishing pre-existing motion from movement that begins during a later project phase.

Is InSAR real-time monitoring?

No in the same sense as a high-frequency local sensor. Satellite revisit, data availability, processing and reporting create a different cadence. InSAR is therefore best treated as one layer in a monitoring strategy whose frequency matches the required decision time.

Can InSAR identify the cause of movement?

Not by itself. It measures surface displacement. Determining whether the cause is consolidation, dewatering, groundwater abstraction, tunnelling, mining, slope instability or another process requires supporting geological, hydrological, structural and project evidence.

What should I send RAUZ for an initial review?

A useful first package includes the project location, area of interest, asset type, monitoring objective, relevant geology or GI, available ground-monitoring data, construction stage, any existing InSAR product and the technical decision the team needs to make.

Discuss Your Project

Have a movement pattern that needs a wider view—or an InSAR map that needs engineering context?

Send RAUZ the project location, monitoring question and the evidence already available. We can first define whether the right next step is historical screening, recurring InSAR monitoring, data diagnostics, ground-validation planning or an independent monitoring review.

Discuss an InSAR Project Request an InSAR Quote