Rail Infrastructure
Continuous GNSS Coverage for Rail Operators,
Underground Networks & Smart Rail Systems
SubWAVE™ is a real-time GPS/GNSS continuity solution designed for rail and subway environments where satellite signals have become unavailable. It enables continuous positioning underground, in depots, covered stations and tunnels, allowing operators to improve safety, operations and asset management.
Why Rail Operators Need GNSS Underground
In modern rail networks, positioning is critical to:
- Manage workers, vehicles and assets
- Ensure compliance with safety regulations
- Enable automated or semi-automated rail operations
- Improve passenger information and experience
- Guarantee emergency call location (E112/E911)
However, in subways, tunnels and covered depots, traditional GNSS signals disappear and jeopardize those services’ availability.
SubWAVE™ extends GNSS coverage underground, removing these critical blind zones.
Key Rail Use Cases of SubWAVE™
Workforce, Train & Asset Localization (IoT & Positioning)
SubWAVE™ allows real-time positioning of workers, trains and equipment inside tunnels and stations.
- Isolated workers can be located and protected
- GPS-enabled PMR devices are now functional underground too
- Lost equipment can be found instantly (anti-theft protection)
- Asset positions are visible on a live map
This enables full IoT interfacing with your existing tools and systems.
Value for operators: safer workforce, faster operations, better visibility of assets.
PTC Continuity & Regulatory Compliance in Depots
Even outside, GNSS can be lost under canopies and roofs in depots or stations.
SubWAVE™ provides continuity of positioning to:
- Maintain Positive Train Control (PTC) systems active
- Avoid non-compliance with railway safety regulations
- Maintain safe traffic management
SubWAVE™ ensures seamless transition between outdoor and indoor environments.
Traffic Optimization & Autonomous Rail Applications
With continuous GPS-based positioning:
- Real-time monitoring of every train is possible
- Traffic flows can be optimized
- Unexpected stops are detected instantly
- Rail geometry defects can be precisely geolocated
SubWAVE™ enables and supports:
- Autonomous train operations (public & maintenance)
- Predictive maintenance
- Infrastructure digital twins
Passenger Safety & Experience
With SubWAVE™, GPS becomes available underground on smartphones.
This enables:
- Accurate emergency call location (E112/E911)
- Navigation through tunnels and stations
- Real-time travel information for multimodal journeys
- Use of native apps like Google Maps/Waze
Those enabled services dramatically enhance passenger satisfaction and safety.
Stockholm (SL): a proven rail reference for SubWAVE™
SubWAVE™ is deployed in Stockholm’s public transportation network to support safety and emergency responses in underground infrastructure.
It enables:
- Zone-based GPS inside subway stations and tunnels
- Positioning of intervention teams
- Compliance with E112 emergency call regulation
- Faster and more efficient rescue operations
This project showcases SubWAVE™’s impact on efficiency for large rail operators, with major benefits on compliance and safety.
How SubWAVE™ Works
SubWAVE™ is a real-time GNSS emulator, broadcasting accurate data via antennas along the networks, and when possible, using existing telecom networks (e.g. leaky feeders, radiating cables).
It delivers:
- Extended GNSS signal
- Compatibility with standard receivers
- Seamless indoor/outdoor transition
- Software-defined architecture (upgradable)
- Zone-based or continuous positioning