 The IGS Tracking Network: IGS08 Core Reference Frame sitesClick on a site label for information on that site.
This map shows the current IGS Core Reference
Frame (RF) stations.
This set of stations has been selected by the IGS Reference Frame Working
Group (RFWG) for the IGS realization of the International Terrestrial
Reference Frame (ITRF).
The main selection criteria were station
performance, track record, monumentation, collocation and geographical
distribution.
At every update of the RF realization, the number of
stations selected has increased, in order to improve
the overall quality of the RF realization, and thus all the IGS
products that depend on it.
The consistency and stability of the IGS products, as well as the ability to link measurements across space and time, depends critically upon those RF stations. As such, there are physical and operational guidelines noted as being particularly important for RF core stations. Well-behaved coordinate/residual time series are an important indicator of individual station contribution to the frame realization stability. The special responsibility and effort of the agencies operating these stations is acknowledged by the IGS and its users.
See IGSMails 6354, 6355 and 6356 for more information. A machine-readable list of the stations' 4-character ID is available.
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This page last updated: 13 May 2010 |