In 2022, SBB commissioned ARGE SAR to develop a track-accurate localisation system for track-laying machines.

➡ As part of the digitalisation of maintenance work, SBB issued a tender for a precise positioning system for track-laying machines that works both outdoors and in tunnels. ARGE SAR was awarded the contract for this project in 2023.

➡ ARGE SAR consists of the companies Sersa Maschineller Gleisbau AG, Rhomberg Bahntechnik AG and us.

➡ The main project requirement is the precise positioning of track-laying machines to within ±1m in Switzerland’s so-called GTG network (track topography), both outdoors and in tunnels. We determine the high-precision position data on the track-laying machines using the so-called mPOM unit. The mPOM unit determines the GNSS position, improves accuracy with RTK (real-time correction) and supplements the positioning solution with an integrated IMU (inertial measuring unit). Positioning in tunnels is calculated using an odometer on one axis of the machine and the IMU.

🕰 The project is scheduled to run until June 2026.

🔍 Further information on the project:
👉 www.anavs.de/x-in-a-Box