A Network of Real-Time Reference Stations for a Major Engineering Projectby Werner Daxinger, Leica AG, Switzerland.
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Werner Daxinger |
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Abstract : |
The major civil engineering project currently being
undertaken in the northern part of Europe is the
construction of a road and rail link to cross Oresund, the
narrow sea passage between Denmark and Sweden. This fixed
link, between Copenhagen and Malmo, will be 18km in length
and will consist of a tunnel, a artificial island, and a
bridge. It will carry a motorway and a double track
railroad.
The survey control for the project is based on a network of
GPS reference stations. These stations transmit RTCM V2.1
messages for use by all real-time GPS rover units working in
the area and log RINEX data to bulletin boards for
subsequent post-processing requirements. Quality control is
provided by integrity monitoring at the reference stations
and by the fact that rover units can switch instantly from
one reference to another to check position-fixes. The system
is designed to provide real-time GPS surveying accuracies of
3cm or better throughout the entire working area.
This paper describes the concept, development and operation
of this network of real-time reference stations designed to
support centimetre-accuracy real-time GPS surveying for
civil engineering, construction, positioning and precise
navigation.
Werner Daxinger - Profile :
Mr. Werner Daxinger received his diploma as a Surveying Engineer from the Technical University of Vienna (Austria) in 1993. From 1993 to 1996 he was employed at the department of Theoretical Geodesy of the Technical University of Vienna mainly for Gravity Field Determination and Theory of Adjustment. During the same period he worked for a private civil engineering company, dealing with construction and CAD/GIS applications. In 1996 he received his doctorate in Physical Geodesy and took up an appointment at Leica Heerbrugg AG, where he is engaged in the development and product management of GPS surveying systems.
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