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Alain Arnaud, CEO

Ground displacement monitoring using radar satellite images

Alain ARNAUD, CEO

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InSAR motion mapping

- 3 cm

SubCoast

3 cm

Travel phase between ground and sensor gives mmtric distance

Radar satellites

Difference between two measurements indicates ground movement over time

First measurement Second measurement (afterwards)

In terferometric

S yntheticA perture R adar

Superimposition of waves to detect differences

High resolution radar system=

=

PanGEO

Results

Ground movement time series

InSAR ground motion data utilised in a multiude of geo-hazard focused projects

Ground movement rate maps

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• Traditionally InSAR analysis of local area or of single phenomena = inefficient

• Advanced algorithms to process full image data frames rapidly and allow multiple applications of data

• Methodology will be applicable to Sentinel-1 data to allow rapid wide area motion maps to be produced

• Method for integrating multiple track datasets into a single motion map

• Resulting datasets can be freely viewed

• Resulting datasets can be used for multiple applications of InSAR to Geo Hazards

• To allow continental scale and future worldwide ground motion dataset

Wide area map initiative of Terrafirma

Process large land-masses as one dataset – one dataset ….. many applications

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• Wide area map for survey & ongoing local studies with VHR SAR

• Wide area ground motion data – strain data for EPOS and GEM etc

• Volcano inflation

• Mining induced subsidence• Abandoned mine re-watering uplift• Karst Geology – sink hole formation

• Dike stability• Subsidence monitoring of flood prone areas

Mine subsidence Karst Geology

Volcanics

Tectonics

Landslides

Flooding

InSAR motion mapping applied to GeoHazards

Many applications can be served from one InSAR ground motion dataset