NovAtel® SPAN® Rail Profile is a GNSS receiver firmware enhancement designed to improve navigation performance in rail applications. It combines GNSS data with inertial measurements to deliver continuous and accurate position, velocity, and attitude—even during extended GNSS outages. Optimized for low-dynamic rail environments, the firmware uses intelligent rail dynamics modeling and patented Antenna Phase Windup technology to maintain reliable navigation. SPAN Rail Profile is compatible with all SPAN-supported Inertial Measurement Units (IMUs).

Features

• Continuous Navigation Output: Maintains position, velocity, and attitude data during GNSS signal loss.
• Rail Dynamics Modeling: Uses motion constraints specific to rail vehicles to enhance accuracy.
• Patented Antenna Phase Windup Technology: Corrects for rotational effects on GNSS signals caused by antenna movement.
• IMU Compatibility: Available for all SPAN-supported IMUs, offering flexible deployment options.
• Optimized for Low-Dynamic Applications: Tailored for rail systems with predictable motion profiles.

Benefits

• Reliable Performance in GNSS-Denied Areas: Ensures uninterrupted navigation in tunnels, urban rail corridors, and other challenging environments.
• Improved Accuracy: Reduces errors in position and orientation using advanced modeling and sensor fusion.
• Scalable Integration: Compatible with a wide range of IMUs to meet different accuracy and budget requirements.
• Rail-Specific Optimization: Designed to meet the unique needs of rail transport systems.
• Operational Continuity: Supports safe and efficient rail operations even during GNSS outages.