Northeast Frontier Railway to conduct Airborne Lidar Survey of the Lumding-Badarpur hill section

The Airborne Electromagnetic Lidar Survey is set to be conducted for the Lumding – Silchar Hill Section of Northeast Frontier Railway. The survey will be conducted at critical locations to check the stability of slope, movement of hill and many other circumstances for the timely implementation of the project.

More Details:

Northeast Frontier Railway is all set to conduct Airborne electromagnetic Lidar Survey at the critical locations of Lumding – Silchar Hill Section. The survey will be conducted during and after monsoon which will analyse the critical location in detail for the type of soil strata, stability of slope, presence of natural or formed fault tending any movement of hill, water accumulation beneath the soil strata, formation of slip circle and stability of hill toe.

Why LiDAR Survey is Important:

  • The survey will be conducted between Lumding – Badarpur section at KM – 45 to KM – 125. Tender for the survey has already been finalised and awarded to a Noida based company M/s GarudaUAV Soft Solutions Private Limited.
  • Airborne ground surface survey and Sub surface Electromagnetic Survey based o­n robust Digital twin based AI powered one point monitoring system will be conducted.
  • This will monitor Dynamic Geophysical Landscape and Subterranean Environment which will help in identifying & analysing failure/critical areas for preventive maintenance of the track environment without substantive human interventions along weak and vulnerable locations prone to landslide/slip.
  • This will be done by using non-invasive sensors i.e. LiDAR, Optical Photogrammetry, Infrared mapping and Ground penetrating Radar & Airborne Electromagnetic.
  • The result or output will be analysed by Artificial Intelligence software for better comparison of thousands of data generated by survey and remedial measures will be provided for such critical locations.

Features of LiDAR Survey:

  • LiDAR (Light Detection and Ranging) technology is used to obtain highly detailed and precise elevation data.
  • A LiDAR survey is conducted using airborne or terrestrial LiDAR scanners to capture the topography of the project area, including the existing railway tracks, nearby terrain, and any relevant structures.


Railway surveying projects involve a range of surveying activities and techniques to support the planning, design, construction, and maintenance of railways. These surveys play a crucial role in ensuring the safety, efficiency, and effectiveness of railway transportation systems. The step reflects the agency with which NFR is working towards executing key infrastructural projects in the complex landscape of the Northeast and in a safe and reliable manner.

Source: NFR – Press Release | Image Credit (representational): Eastern Railway