Mobile surveying vehicle combination navigation

Customer Background

A Shanghai-based high-definition map service provider operating mobile mapping vehicles for autonomous driving HD map collection needed continuous high-precision positioning in GPS-challenged environments including urban canyons and tunnels.

Challenges

• Frequent GPS signal loss in urban canyons and tunnels causes positioning drift.
• Mobile mapping demands centimeter-level accuracy with extremely low INS drift.
• Equipment must operate 24/7, adapting to urban road vibration and temperature variation.

GyroSens Solution

• GyroSens equipped the mapping vehicle with the **GSGYR324F three-axis FOG** for INS/GNSS integration:
• Triaxial integrated design with compact form factor (112×112×77.5mm).
• Bias stability <0.3°/h, random walk <0.03°/√h, ensuring heading stability during GPS outages.
• Available in integrated or split configuration for various installation spaces.
• RS422 digital output enabling tight coupling with GNSS receiver for cm-level positioning.

Results

After 60 seconds of GPS signal loss, system positioning error remained within 2 meters (CEP). The mapping vehicle completed 1000km of Shanghai inner-ring HD map collection, with point cloud quality meeting L4 autonomous driving requirements.

Recommended Product

GSGYR324F Three-Axis Fiber Optic Gyroscope (Integrated Model)

Call to Action

Contact our mapping business team for mobile mapping integrated navigation solutions.