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Static 3D city models are well established for many applications such as architecture, urban planning, navigation, tourism, and disaster management. The recent launches of very high resolution (VHR) Synthetic Aperture Radar (SAR) Earth observation satellites, like the German TerraSAR-X, provide for the first time the possibility to derive both shape and deformation parameters of urban infrastructure on a continuous basis. The proposal “4D City” is directed towards 4D (space-time) urban infrastructure monitoring and visualization by fusion of multiple sensors: Differential Tomographic SAR (D-TomoSAR), stereo-optical images and LiDAR (Light Detection and Ranging). The different sensors complement to each other: stereo-optical data have the best visual interpretability, LiDAR provides very accurate Digital Elevation Models (DEM), and D-TomoSAR as well as the related Persistent Scatterer Interferometry (PSI) are the only methods to provide the dynamic component of buildings with up to millimeter accuracy, e.g. seasonal thermal dilation, structural deformation, or subsidence due to groundwater extraction or underground construction.

Since VHR D-TomoSAR of urban infrastructure is a new research area, the development and improvement of appropriate robust TomoSAR algorithms will be the first focus of the project. Second, data fusion for combining the strengths of different sensors will be developed both on the geodetic and the semantic levels. Finally, a particular challenge will be the user specific visualization of the 4D multi-sensor data showing the urban objects and their dynamic behavior. Visualization must handle spatially anisotropic data uncertainties and possibly incomplete dynamic information. It may also integrate some of the data fusion steps. Different levels of user expertise must be considered.

The research envisioned in this proposal will lead to a new kind of city models for monitoring and visualization of the dynamics of urban infrastructure in a very high level of detail. The change or deformation of different parts of individual buildings will be accessible for different types of users (geologists, civil engineers, decision makers, etc.) to support city monitoring and management as well as risk assessment.

 

 

01-01-1970
IGSSE setup of interdisciplinary research in project teams
16.05.17

Apply now: 12th call for proposals

IGSSE supports up to 10 new project teams

Call closes 2 July 2017

11.06.17

Apply now: IGSSE travel grant for ICCE 2017

28-29 September 2017, TU Darmstadt

Submission deadline for abstracts: 18 June 2017

08.06.17

IGSSE Forum 2017

29-31 May 2017, TUM Science and Study Center Raitenhaslach, Burghausen

14.05.17

Climate-KIC: Join the PhD Catapult

Two-week thematic summer schools across Europe

04.05.17

IAS Symposium: Selected topics in science and technology

8-10 May 2017, IAS Building, Garching Campus

02.05.17

IAS Coffee Talk with PTL Florian Praetorius

3 May 2017, 1 pm, TUM IAS Building, Garching Campus

23.02.16

10th IGSSE Forum

1 - 4 June 2016, TUM Science and Study Center, Burghausen

05.06.16

10th IGSSE Forum

Smart cooperation - science and technology in, with and for society

15.12.15

The Science of Cooking

Doctoral Candidates explore the Secrets of a great Dinner

26.11.15

ATUMS@IGSSE

Having heard of a great Canadian Kick-Off Meeting, everyone at IGSSE was thrilled to welcome the...

20.11.15

Breakfast at IGSSE´s

Meet the IGSSE team every other month! All the things IGSSE members wanted to asked but never dared...

13.10.15

Save the Date: Canadian ATUMS Speaker on "Global Science- Global Career"

26. November 2015, 6-8 pm, IAS Faculty Club, Garching Campus

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Friday, 09. June 2017
Workshop: Standing up for science
9 June 2017, 9am-4pm, Brussels
Apply now: McKinsey 'Forschergeist' symposium
9-11 June 2017, Berlin For doctoral researchers and postdocs!