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Septentrio GNSS technology guarantees DEME’s operations in areas of interference

February 10, 2017  - By

The Belgian dredging, environmental and engineering group DEME relies on the accuracy and reliability of the AsteRx family of precise GNSS positioning solutions from Septentrio.

DEME is using Septentrio’s AsteRx GNSS receivers to obtain centimeter-level accuracy for all its dredging and marine construction operations worldwide. These receivers are specifically designed to operate in difficult conditions, from dredging a few meters from the coastline to constructing wind turbines kilometers out at sea.

AsteRx-U dual-antenna receiver.

AsteRx-U dual-antenna receiver.

DEME began using Septentrio’s solutions more than 10 years ago. While dredging in the Belgian town of Oostende, DEME was unable to obtain a reliable RTK position from their GNSS equipment because of interfering radio signals from a local radio tower.

Septentrio worked with DEME to identify the source of the interference and modified a standard RTK receiver with special firmware to address the jamming problem. This case, along with others faced by Septentrio’s customers in the field, encouraged the development of a dedicated interference mitigation technology called AIM+, which is now standard in Septentrio’s GNSS solutions.

Septentrio’s AsteRx GNSS receivers have been deployed on DEME’s ships around the world. They have been vital to DEME for the success of projects such as the creation of Gateway Port in London, U.K.; the construction of Deurganckdok in Antwerp, Belgium; the Pearl Qatar City; the Thornton Bank Offshore Windfarm in Belgium; the extension of the Suez Canal in Egypt; and many more.

“’Creating land for the future’ is the slogan here at DEME and this is thanks, in part, to the accuracy and robustness of the solutions offered by Septentrio,” says Lorentz Lievens, head of the survey department.

“Jamming is a concern which DEME has seen more and more all over the world,” Lievens says. “Septentrio’s receivers are unique in that they continue to provide an accurate solution even in areas of high radio and ionospheric interference allowing DEME to deliver projects on time and on budget. Septentrio’s precise positioning solutions will remain vital for DEME to deliver quality and cost-effective operations around the world for many years to come.”

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1 Comment on "Septentrio GNSS technology guarantees DEME’s operations in areas of interference"

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  1. William K. says:

    If the software modified to reject the interference works, it would quite probably be useful to a lot of other users, possibly it may even be a marketable product. Interference, intentional or accidental, is a real problem for a lot of folks. My suggestions for a small missile to follow the interfering signal back to it’s source have mostly been ignored, as far as I can tell. But because “spoofing” a gnss system is such a serious offense that the explosive destruction of the transmitter is quite appropriate. I am not talking about accidental interference, but strictly about intentional spoofing, something quite different.