Home Workshops - 04 - Paffenholz, Omidalizarandi, Neumann


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"Terrestrial laser scanner and accelerometer based deformation monitoring of civil engineering infrastructures"


Today, short- and long-term deformation monitoring of civil engineering infrastructures based on terrestrial laser scanner (TLS) and accelerometers has received considerable attention. In the scope of this workshop, we will address three major issues in this regard. 

The first part will focus on theoretical aspects including deformation monitoring models (congruence and kinematic), sensor aspects (TLS, accelerometer), data acquisition and geo-referencing, approximation approaches (e.g. curve and surface based), and basics on time series analysis.  
In the second part, we are demonstrating the theoretical issues with practical examples as follows:

a) Introduction of the used sensors (accelerometer, TLS)

b) Data acquisition and measurement procedures

c) Analysis concepts (basic concepts in time series analysis as well as adjustment calculations) including surface computations and comparisons

d) The above steps are presented in case studies for either congruence or kinematic deformation analysis of static and kinematic objects.

The third part is dedicated to practice the time series analysis of datasets from the accelerometers and 2D profiles of the TLS. In addition, cloud-to-cloud comparison is presented and practiced based on a freely available software tool.

                                                                                                                                                         
                                                                       

Workshop date: 15th Oct. 2019   13:00-17:00

                   

                             


Presenters Information


            

Dr.-Ing. Jens-André Paffenholz

Dr.-Ing. Jens-André Paffenholz received his Dipl.-Ing. and Ph.D. in Geodesy and Geoinformatics at the Leibniz University Hannover in 2006 and 2012, respectively. Since 2014, he has been the leader of the working group Terrestrial Laser Scanner Based Multi-Sensor Systems | Engineering Geodesy at the Geodetic Institute of the Leibniz University Hannover. His research profile is based on laser scanning and multi-sensor systems with the aim of an efficient three-dimensional data acquisition for monitoring and change detection of natural and anthropogenic structures. He is active in national (DVW e. V.) and international scientific associations (working group chair of IAG WG 4.1.3).

        

Mohammad Omidalizarandi

Mohammad Omidalizarandi received a M.Sc. degree (Geomatics Engineering) from the University of Stuttgart (2011). Since 2014, he has been at the Geodetic Institute of the Leibniz University Hannover. He is currently pursuing a Ph.D. degree with a focus on vibration analysis of bridge structures using low-cost accelerometers and an image-assisted total station. His research areas are: sensor calibration and error modelling (i.e. terrestrial laser scanning, total station, digital camera and accelerometer), time series analysis, robust parameter estimation, adjustment computation, sensor integration, feature extraction from digital images and point clouds, vibration analysis and deformation monitoring.

    

         

  

Prof. Ingo Neumann

Prof. Dr.-Ing. Ingo Neumann received his Dipl.-Ing. and Ph.D. in Geodesy and Geoinformatics at the Leibniz Universität Hannover in 2005 and 2009, respectively. From 2009 to 2012 he was head of the Geodetic Laboratory at the University FAF Munich. Since 2012 he is Full Professor in the field of Engineering Geodesy and Geodetic Data Analysis at the Geodetic Institute of the Leibniz Universität Hannover. From 2014 on he is also head of the Geodetic Institute. His research areas are: adjustment theory and error models, multi-sensor systems, quality assessment, geodetic monitoring, terrestrial laser scanning, and automation of measurement processes. He is active in national and international scientific associations and member of the German and International Organization of Standardization (DIN and ISO).