Fugro Offers High-Accuracy Offshore Positioning Service

March 19, 2015  - By
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Image: GPS World

Fugro has introduced its high-accuracy G2+ service, designed to benefit offshore operators around the globe who require positioning and measurement accuracy at centimeter level.

G2+ is an enhancement of Fugro’s G2 service (based on GPS and GLONASS). The service uses highly advanced GNSS augmentation algorithms developed in house. The code and carrier-phase signals transmitted by GPS and GLONASS satellites are monitored globally by Fugro’s worldwide network of reference stations.

These observations are processed centrally in real-time using the company’s proprietary algorithms to generate precise corrections which are used to augment the standard signals broadcast by GPS and GLONASS satellites.

Customers receive corrections via seven high-powered communications satellites, providing at least two independent G2+ data sources. The new satellite positioning service will be particularly beneficial when seeking to measure latitude, longitude, elevation and speed with high accuracy in real-time, Fugro said.

Applications include offshore construction, survey services, vessel monitoring and structural monitoring. The ultra-high accuracy enables the real-time correction of tidal changes — which impact the accuracy of seabed mapping — as well as the real-time monitoring of the motion of floating and fixed structures.

The 3D accuracies of the system approach those of GNSS RTK (real-time kinematic) systems while avoiding the need for an RTK base station or local transmission link, overcoming the logistical challenges and range limitations associated with coastal RTK systems, Fugro said.

The launch of G2+ follows the recent launch of Fugro’s G4 satellite correction service, which takes advantage of all four global navigation satellite systems: GPS, GLONASS, BeiDou and Galileo.

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