Page 1

Alain Arnaud, CEO

Contribution to GEOSSSatellite InSAR – PSI

for ground displacement mapping

Alain ARNAUD, CEO

Page 2

InSAR motion mapping basics and current projects

- 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

=

=

PanGEO

Results

Ground movement time series

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

Ground movement rate maps

Page 3

• 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

Page 4

Wide area map initiative of Terrafirma

SPACE SEGMENTSENTINEL 1

• 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 InSAR to Geo Hazards

• 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

• To allow continental scale and future worldwide ground motion dataset

NEW CONCEPT and NEW ALGORITHMS for a NEW PRODUCT

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

Page 5

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

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

• Volcano activity monitoring: inflation/deflation cycle

• 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 Benefits for Disasters: GeoHazards mapping

Many applications can be served from one InSAR ground motion dataset