Purpose: To explain what INS features improve position error in GNSS denied environments.
Last Updated: June 2020
When using the Inertial Navigation System (INS), position error accumulation is always a concern. One way a user can limit this error is by enabling the “Tunnel Guide” feature (only available for fixed-axle land vehicle). When enabled, it allows the INS to reduce its accumulated errors during extended GNSS outages. Use this feature when external aiding data is unavailable. To do so, go to the “Correction options window of the “Options” tab and enable “Tunnel guide” as shown below.