GPS World, May 2011
Position 20 Kilometers Heavy Construction Worlds Longest Immersed Tunnel 40 Meters Underwater The Fehmarnbelt Positioning System between Denmark and Germany includes a geodetic basis four permanent GNSS stations and a real time kinematic RTK service for construction of a road and rail causeway between the islands of Fehmarn Germany and Lolland Denmark across the Fehmarnbelt a 20 kilometer stretch of open water in the Baltic Sea This homogeneous consistent coherent highly accurate GNSS based positioning system exemplifies comparable systems and services that can be established for any major construction site or infrastructure project Now in use for environmental geotechnical and geophysical investigations it provides cost efficient operations and facilitates the precise navigation of large costly offshore equipment Anna Jensen Dirk Hermsmeyer Bastian Huck Jürgen Rüffer and Peter Skjellerup A FIGURE 1 GPS World May 2011 www gpsworld com 30
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