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AGRS.NL: Primary GNSS Network.
GNSS Providers (with reference stations)Absolute gravimeter FG5 No 234.Gravimetry bunker @ WSRT, Westerbork.

EUREF 2008, Brussels, 18-20 June 2008

Dr.ir. H. van der Marel, dr.ir. P. Ditmar, L. Huisman (TU Delft)
Ir. J. van Buren (Kadaster)
Ir. A. Kösters (Rijkswaterstaat)
Dr.ir. H. Quee (NCG)

Tekst van de presentatie.


AGRS.NL: Primary GNSS Network

Operational aspects:

  • Kadaster 5 sites (NETPOS);
  • TU Delft 3 sites & IGS/EPN local data center.

DLFT and WSRT are real-time (RT-IGS->NTRIP).
TU Delft also runs a site in Cabauw for GNSS meteorology (one of the E-GVAP supersites); not shown in the plot.


GNSS Providers (with reference stations)

Network RTK providers:

http://gnss1.lr.tudelft.nl/nlref/ 


Maintenance of Classical Points

The 'Triangulation' network was phased out:

  • Maintenance of the classical RD points was reduced to 400 GPS base points (kernnetpunten).
  • The 400 GPS base points (3-D) are available in ETRS89 and Old style RD coordinates and NAP heights.
  • Transformation procedure RDNAPTRANS.

National leveling:

  • A new maintenance period for the national leveling network NAP was started in 2007 with a duration of 10 years.

Gravimetric measurements

In 2007 the first measurements with a new absolute gravimeter purchased by TUD in 2006 at first order gravity stations were carried out. Also, continuous gravity measurements were carried out at Westerbork (IGS station).


Summary

In this paper the current status and developments of the Geodetic Infrastructure for the Netherlands are described.
In 2007 important changes in the operational procedures for the permanent networks were made. Also, in 2007, national network RTK services continued to evolve, and in March 2008 a fourth network RTK provider became active in the Netherlands.
Maintenance of the classical RD points was reduced to 400 GPS base points (kernnetpunten). A new maintenance period for the national leveling network NAP was started in 2007 with a duration of 10 years.
In 2007 also the first measurements with a new absolute gravimeter purchased by TUD in 2006 at first order gravity stations were carried out. Continuous gravity measurements were carried out at Westerbork (IGS station).
Finally, the Netherlands Geodetic Commission (NCG) commissioned a study into the organization of the geodetic infrastructure in the Netherlands. The situation and organization in the Netherlands will be compared to surrounding countries. The results of this study are expected in 2008.

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