New DP Vessel Inertial-aided GNSS Service by Veripos

Press Release
Sunday, November 18, 2012

Global offshore positioning specialists Veripos introduce a new inertially-aided precision GNSS solution for dynamically positioned vessels.

The new system, Verify Axiom, combines tthe latest GNSS positioning technology advances with high integrity inertial measurements for enhanced and more reliable positioning performance.

Developed in association with Sonardyne International Ltd. and featuring the seamless integration of Veripos GNSS and Sonardyne inertial technologies, Verify Axiom exploits long-term precision characteristics of GNSS positioning with the continuous availability and rapid update rates of inertial sensors.   It thus bridges any GNSS disruptions typically caused by ionospheric irregularities and physical obstructions while detecting position outliers due to common mode failures which can otherwise affect vessel systems simultaneously.

The core component of Verify Axiom is Sonardyne’s IMO-approved Lodestar Attitude and Heading Reference System (AHRS) and Inertial Navigation System (INS) which outputs precise position, velocity and attitude in dynamic conditions without any need for external support inputs or vessel manoeuvres.  The Lodestar’s INS high-grade gyroscopes have been specifically selected to optimise performance and ease of use while its North-seeking capability greatly simplifies installation, as no external aiding is required.

Veripos’s wide-ranging GNSS positioning capabilities in turn complement Lodestar’s inertial sensor outputs, which are combined mathematically to compute position with the highest possible accuracy and integrity for a surface navigation system.  Input of GNSS observation data corrects any potential degradation over time in the inertial position solution.


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