StreetMapper Maps French Railways for Safer Tracks
FIT ESIC is helping France’s national railway company SNCF improve safety and inform track upgrade works with a mobile laser scanning system from 3D Laser Mapping. Owned and operated by FIT ESIC, the rail mounted StreetMapper was used to survey several hundreds of kilometres of track, generating engineering grade survey data on behalf of SNCF. The laser generated computer model was used to build a detailed 3D topographic map of the tracks and its surroundings. This provided length data and cross profiles as well as detecting potentially dangerous objects near the track.
“Since we took delivery of our StreetMapper system we have surveyed thousands of kilometres of roads as well as hundreds of kilometres of railway tracks,” commented Marc Daeffler, Director of the Engineering Division at FIT ESIC. “By working closely with various SNCF engineering teams; survey, track and cantenary, we came up with innovative solutions, utilising StreetMapper to capture and extract large amounts of geometric information.”
FIT ESIC also worked side by side with the developers of StreetMapper, UK based 3D Laser Mapping, in addition to the technical teams within SNCF, to overcome potential challenges associated with working on the railway. These included access for personnel along the track to measure control points, installation and operation of the laser mapping system within the confines of a railway carriage and strong vibrations caused by the motion of the train. 3D Laser Mapping also supported FIT ESIC by devising specific algorithms for the processing of trajectories.
Bruno Landes, Head of the Works Assistance and Surveying Division at SNCF (Societe Nationale des Chemins de Fer Francais) France’s national state-owned railway company, added: “LiDAR technology has without a doubt improved the management of our railway infrastructure. The data has been used as topographic inputs for railway modernisation studies, gauge studies and electrification studies, for example.”
Data created from the millions of individual laser scanned measurements include a 3D topographic map of the track and its surroundings including powers lines, stations and trackside equipment. Length and cross profiles of the track were generated including cantenary lines, staggers of contact lines and overhead civil engineering structures. Potentially dangerous objects were detected, identified and measured to determine clearance from the track and trains.
StreetMapper has been specifically designed for the rapid 3D mapping of highways, runways, railways, infrastructure and buildings. Using vehicle-mounted lasers offering a 360-degree field of view, StreetMapper enables high precision mapping to a range of 800 metres, a capacity of 550,000 measurements per second per sensor and recorded absolute accuracies in independent real world projects of better than 10 millimetres.
SNCF manages rail traffic in France and operates the country’s national rail services, including the high speed TGV rail network. SNCF’s functions include operation of railway services for passengers and maintenance of signalling and rail infrastructure.
StreetMapper has been developed by UK based 3D Laser Mapping in conjunction with German based guidance and navigation specialist IGI mbH. The system employs the latest laser scanning technology for improved field performance and accuracy, precision navigation including a solution for reduced GPS coverage in urban areas, combined with a flexible, modular configuration and increased ease of use and deployment. For further information see www.streetmapper.net
3D Laser Mapping is a global developer of laser scanning solutions for sectors such as mapping, mining and manufacturing. 3D Laser Mapping specialises in integrating laser scanning hardware with their own software and peripherals to create solutions at the cutting edge of technology. Through a worldwide network of distributors 3D Laser Mapping is able to provide frontline support and service for a growing international client base. 3D Laser Mapping is also the Riegl Premier Distributor for the UK, Ireland and sub-Saharan Africa and the leading distributor of TerraScan software. For further information see www.3dlasermapping.com
IGI mbH was founded in 1978. The primary goal of the company was to manage airborne sensor systems for flight guidance, sensor control using GNSS (Global Navigation Satellite System) and INS (Inertial Navigation Systems). Today the portfolio includes additional sensor systems using LiDAR, digital camera systems and thermal camera systems.
IGI covers a wide variety of expertise in optics, electronics, mechanics, software development, and analytics through a team of highly qualified scientists, engineers and technicians. With over 30 years of experience, IGI offers not only integration of various sensors but also complete sensor systems for airborne and terrestrial survey missions. For further information see www.igi-systems.com
FIT ESIC is a surveying and engineering company serving the construction, civil engineering, utilities, industry, energy and urban planning markets, employing 200 staff in twelve offices across France, USA and Morocco. FIT ESIC is organised in four business branches: Civil engineering and construction (design studies, project management, topographic surveys, quantity surveys, machine guidance, site monitoring…); Energies, Sites and Industries (3D as built surveys, dimensional surveys, industrial metrology, reverse engineering, inspection of structures and buildings, site monitoring and surveillance…); Facility networks (surveying and mapping, underground network detection, design studies, pipe inspection…); Town and site planning (urban planning, water management and landscaping, mobility and travels, environment).
For further information see www.fit-esic.fr