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Fugro launches G4 satellite positioning augmentation

Fugro has announced the launch of G4, a satellite correction service for enhancing offshore positioning that will take advantage of all four GNSS (Global Navigation Satellite Systems) technologies.

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Fugro says G4 will significantly improve on the accuracy of unaided GNSS positioning, and will  enhance the safety and productivity of survey and other activities offshore.

G4 augmentation signals are transmitted via seven communication satellites to provide at least two independent broadcast channels. Fugro claims the service will be particularly beneficial when the line-of-sight to certain satellites is obstructed by offshore structures.

The company says it is the first augmentation service designed to incorporate all four GNSS constellations, with global coverage already provided by the USA’s GPS and Russia’s GLONASS, and additional coverage provided by China’s BeiDou and Europe’s Galileo as both systems come online.

According to Fugro, the G4 service already utilises the first BeiDou satellites and is ready to start using the Galileo satellites as soon as the EU announces its Initial Operational Capability (IOC) status.


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