Introduction and Course Overview - AP

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Introduction and Course Overview - AP
Monitoring Alpine Transportation Infrastructures
Using Space Techniques
Urs Wegmüller
Gamma Remote Sensing AG,
Gümligen, Switzerland
http://www.gamma-rs.ch
Monitoring Alpine Transportation Infrastructures
Using Space Techniques
Partners:
Gamma Remote Sensing AG, Gümligen, Switzerland
Institute of Navigation, Graz University of Technology, Austria
Users: Operators of alpine transportation infrastructures (railway
companies, institutes representing the national roads,
companies from the energy sector) and private geological offices
→ SBB, OeBB, ASFINAG, BAFU, K&H
Sponsor: European Space Agency (ESA - ESTEC)
Integrated Applications Promotion Programme (IAP)
KO date: 26 November 2012
Needs and requirements for space-based services
• Densely inhabited Alps, large transportation networks
• Alpine natural hazards with severe human and economic
consequences (rockfalls and landslides)
• Railway and road operators responsible for safe operation
Infrastructure operators require:
• Wide-area information providing probabilities and intensities
of potential hazards endangering their infrastructure
( satellite based deformation information)
• In case of imminent danger in a sensible section of the
network more detailed measurements are required
( terrestrial deformation monitoring)
• In case of emergency an early warning system is required
Scope of the feasibility project
• Our proposed solution is aiming at supporting users from the
transportation infrastructure in the regional assessment of
landslide hazard, the local monitoring of critical unstable
slopes and the ground deformation monitoring in near real
time with the integration of the space techniques radar
interferometry (satellite and terrestrial) and GPS/GNSS.
• The main information to be provided is ground motion,
which can include motion of the transportation infrastructure
(railway, roads), motion of rocks or terrain slopes above
transportation infrastructure, and motion caused by
tunneling.
Elements of service offer
• Satellite based deformation maps using differential
interferometric SAR (DINSAR) and persistent scatterer
interferometry (PSI) GAMMA)
• Satellite based deformation monitoring (GAMMA)
• Terrestrial interferometric radar measurements (GAMMA)
• GPS/GNSS Solutions (INAS TU-Graz)
Deformation mapping over large areas
Image width
is 10 km
Gotthard railway
mm/year
0.0
-10.0
Motion of transportation infrastructures
ENVISAT: 2002-2010
TerraSAR-X: 2008-2012
mm/year
0.0
mm/year
-5.0
0.0
-5.0
Motion caused by tunneling
ERS-1/2
ENVISAT
Image width
is 15 km
_
23º from
nadir
+
mm/year
1992-2000
0.0
-10.0
2004-2010
Gamma Portable Radar Interferometer
23 March 2010 → 9 August 2011
0
mm
5
Main fields of research
Satellite based Positioning
–GNSS (GPS, GLONASS and Galileo)
•Signal generation
•Software based receiver
•GNSS investigations
–Precise Point Positioning
•Development of appropriate algorithms (real time PPP)
–Surveying / geodata acquisition
•Satellite-based methods
•Combination with terrestrial
methods and other sensors
•Main project:
Measurement and processing of a
geodetic network for the Koralm railway tunnel
www.inas.tugraz.at
Proposed Proof-of-Concept: Wassen
Above left: Google Earth
Above right: ENVISAT PSI
2004-2010
Below left: Cosmo-SkyMed
2010.09.09-2010.10.11
Below right: ALOS PALSAR
2006.09.13-2006.10.29

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