FIG Commission 6

Term 2011-2014

Highlights Commission Chair

Commission 6 has been active with 3 Working Groups and 3 study groups: WG 6.1 – Deformation Monitoring and Analysis; WG 6.2 – Engineering Surveys for Construction Works and Structural Engineering hereunder: Study group 6.2.1 – Fibre Optic Sensor, Study Group 6.2.2 – Laser Scanners (joint with Commission 5) and Study Group 6.2.3 – Ground Based Synthetic Aperture Radar; WG 6.4 / 5.5 Ubiquitous Positioning Systems. At the Congress, Commission 6 had 5 technical sessions and 7 joint with commission 5.

Prof Gethin Wyn Roberts



Working Groups

Working Group 6.1 - Deformation Measurements and Analysis

Policy Issues

Deformation studies in Engineering Surveying are based on a broad knowledge of suitable sensors and their potential, modern data storage and communication solutions and advanced processing and analysis methods. Additionally a thorough understanding of the behaviour of monitoring objects (large scale structure or landslide effected area), is essential to set-up and operate an optimum monitoring system. Nowadays deformation tasks are more and more oriented towards real-time systems, which require automation of data capture and new concepts in data processing, analysis and interpretation.

WG6.1’s main goals will be to support specialists in deformation studies with state-of-the art solutions and provide latest developments and future oriented concepts:

  • Promoting studies on the potential of existing and new sensors to determine geometric deformation quantities from surveying and adjacent fields such as geotechnics;
  • Promoting the development of concepts for automated data storage, data transfer and data pre-processing;
  • Promoting the adaptation of numerical algorithms to derive relevant deformation quantities in real-time, including concepts from time series analysis;
  • Promoting a multidisciplinary collaboration between surveying, structural and geotechnical engineers to understand the behaviour of structures and geotechnical objects;
  • Study of most modern concepts for data analysis like artificial neural networks, fuzzy logics and generic algorithms;
  • Initiate investigations to extend the range of deformation studies to higher frequencies, which are important in Structural Health Monitoring, i.e. to be able to study oscillations and vibrations and their effects on critical structures;


Prof. Dr. Wolfgang Niemeier

E-mail: w.niemeier[at] 

Dr.-Ing. Björn Riedel
E-mail: b.riedel[at]

Working Group 6.2 - Engineering Surveys for Construction Works and Structural Engineering

Policy issues

  • Promoting the use of adapted survey techniques in industry & engineering;
  • Promoting a multidisciplinary collaboration between survey engineers, civil engineers, structural & mechanical engineers;
  • Promoting the use of adapted survey techniques in the rail and railway building and operating sector;
  • Promoting the understanding of fibre optic sensors, e.g. interferometric sensors, Brillouin and Raman scattering and Bragg gratings;
  • Study the use of embedded sensor arrays and the role of advanced surveying techniques for structural monitoring;
  • Creating an awareness of surveyors through a task force “Fibre optic sensors” of the rapidly emerging technology of fibre optic sensors as "non-geodetic" sensors to measure deformations (strain) and temperatures in civil engineering structures
  • Promoting the use of Terrestrial based RF positioning system in engineering surveying;
  • Creating an awareness of surveyors through a task force “Geotechnical sensors” as the trend today is going for an integration of those sensors in the geodetic deformation analysis.
  • Creating an awareness of surveyors through a task force “Railways Trolley monitoring system.


Mr. Joël van Cranenbroeck
Leica Geosystems AG
E-mail: joel.vancranenbroeck[at]

Vice Chair
Prof. Esmond C.M. Mok,
Department of Land Surveying & Geo-Informatics
The Hong Kong Polytechnic University
e-mail: lsemok[at]

Working Group 6.3 - Machine Control and Guidance (MCG)

Policy issues

The importance of real-time 3D-position sensors for navigation of machinery on construction sites of roads, tunnels, railways, and airports has increased over the last years and the market is still growing. Also in the field of agriculture GPS-based applications such as crop mapping and automatic steering are well introduced. The new FIG Working Group 6.5 will intensively deal with following topics:

  • Kinematic Measurement and Sensor Technology (focus on L1 RTK Cow-cost systems, adjustments of total station MCG requirements, additional Sensor like Slope Sensors, INS, Orientations Sensors, etc.)
  • 3D-Applications (Agriculture, Construction, Special Applications e.g. UAVs),
  • Multi-Sensor Systems and -platforms
  • MCG Data Processing and Data Flow
  • Control Process and Control Algorithm
  • Standardization of Major Construction Projects

The main goal of Working Group 6.3 is the interaction of research and industry activities.


Henrik Vad Jensen
E-mail: hvj[at]

Vice Chair
Karl Soar
Hexagon Machine Control Division
E-mail: karl.soar[at]