page 1 alain arnaud, ceo ground displacement monitoring using radar satellite images alain arnaud,...
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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 ynthetic
A perture
R adar
Superimposition of waves to detect differences
High resolution radar system
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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