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Measure the catenary geometry
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Analyze railway gauges

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detection of telecom faults

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Verify the compliance of ballast profiles
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Diagnose rock and coated walls
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Characterizing the risk of level crossings
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Characterize hazardous vegetation near the tracks
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VIGNETTE
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VIGNETTE
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What is LiDAR ? 

LiDAR, which stands for "Light Detection and Ranging" or "Laser Imaging Detection and Ranging," is a distance measurement technique based on the analysis of the properties of a light beam returned to its emitter.

A LiDAR system is an optoelectronic device consisting of a laser emitter, a receiver with a light collector (such as a telescope or other optics), and a photodetector that converts light into an electrical signal. It also includes an electronic signal processing chain that extracts the desired information.

LiDAR data collected forms a three-dimensional point cloud with up to 7,000 points per square meter, providing a highly detailed and precise level of information.

 

Lidar

What is a Track Inspection Vehicle (TIV) ?

SNCF Réseau operates a fleet of trains known as Track Inspection Vehicles (TIVs), which are equipped with LiDAR measurement sensors and cameras.
They inspect conventional lines every eight weeks, providing comprehensive and continuously updated data.
The primary data used for gauge analyses are the LiDAR data collected by the TIVs.
These point clouds, processed through a series of quality control phases, have a high density (several hundred points per square meter) and centimeter-level relative accuracy.