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SIRGAS-CON Loosely Constrained Weekly Solutions

Loosely constrained weekly solutions are obtained by combining the weekly solutions delivered by the Local Processing Centres for the SIRGAS-CON-D densification networks with the weekly solutions provided by the IGS-RNAAC-SIR for the SIRGAS-CON-C core network.

The file names correspond to: SIRwww7.SNX:

SIR identifies the content of the file as a official SIRGAS product,
wwww is the GPS week,
7 indicates that the solution includes the seven daily solutions,
SNX shows that it is given in SINEX format.


Loosely constrained weekly solutions for the entire SIRGAS-CON network (SIRGAS-CON-C core network + SIRGAS-CON-D densifications sub-networks) are the contribution of SIRGAS to the global polyhedron of SIRGAS. They are available at


Loosely constrained weekly solutions computed before GPS week 1400 (November 2006) were reprocessed including absolute corrections for the phase center variations of the GNSS antennae and applying IGS05 as reference frame. These reprocessed solutions are identified with SI1wwww.SNX.


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