A real-time positioning system that provides continuous spatial and linear data.

OmniRTPS is a self-contained, compact unit designed to operate with minimal or no human intervention, making it easy to install onto a rail vehicle.

OmniRTPS real-time positioning system replaces traditional manually-operated systems that are used on most rail vehicles. The data provides infrastructure owners and fleet managers with a standard positioning reference for the various measuring systems and services they use. In the UK, the OmniRTPS real-time positioning system also generates the engineer’s line reference, track identifier and mileage.

How it works

OmniRTPS calculates its spatial and linear position through a close-coupled GNSS/inertial measurement system, a railway track centreline model and map matching.

This allows it to generate continuous linear and spatial track location with a typical accuracy of within 1m, even in areas of poor satellite coverage such as tunnels and cuttings.

Key features

  • Support for industry standard interfaces (RS232/485/Ethernet)
  • Optional mapping front end for easy viewing of location and status information
  • Accurate and stable synchronisation signals
  • High performance GNSS
  • Optional spatial analysis tools to visualise data
  • User-configurable outputs


  • Position accuracy – within 1m, 95% confidence level
  • Positions can be repeated run on run to assist with trend analysis
  • Easily integrates with other systems
  • Remote monitoring and activation
  • Real-time view for on-train staff
  • No loss of off-route recording data as position is always known
  • Modular architecture enables support of future inertial / GNSS units
  • OmniRTPS real-time positioning system

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