Customer needs 

Ensure the safety of slopes and rock cuttings​ 

Types of data analyzed 

3D LiDAR images and point clouds

Data acquisition method 

Drone equipped with a LiDAR sensor​

Method of using the digital twin

30-minute flight over an area 1 kilometer wide and 500 meters high every 3 months​

Creation of an orthophotograph and a 2D topographic elevation map ​

Identification of defects or anomalies that could impact the railway network​​

Benefits for the client

• Ability to conduct verification surveys in areas that are uncleared or at heights that are inaccessible without specialized personal protective equipment (PPE)​
• Reduce the resources required for routine inspections​
• Detect and more precisely assess the evolution of walls through diachronic analyses​
• Prioritize specific areas for clearing​
• Minimize exposure of workers to height-related tasks
• Highlight the types of fractures affecting the massif​

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.