Terrestrial reference frames supporting GNSS (Global Navigation Satellite Systems) positioning shall refer to the same reference frame in which the satellite orbits are computed. In general, the ITRF (International Terrestrial Reference Frame) is applied for this purpose and, consequently, SIRGAS has been established as a regional densification of the global ITRF in Latin America and the Caribbean. In the same way, the continental reference frame SIRGAS is extended to the individual countries by means of the national geodetic networks. According to this, GNSS positioning referring to SIRGAS or to its national densifications directly accesses the ITRF.
In order to divulge and to promote the adequate use of SIRGAS as reference frame in the different countries of the region, the Working Group II of SIRGAS (SIRGAS at national level) coordinates a capacity building activity oriented to strengthen the fundamental concepts associated with the Geodesy of Reference. This activity is sponsored by the International Association of Geodesy (IAG) and the Pan American Institute of Geography and History (PAIGH). It is called SIRGAS/IAG/PAIGH.
Dr.-Ing. Laura Sanchez
lm.sanchez@tum.de
80333 München
Arcisstr.21
Tel. +49 89 23031-1295
Fax +49 89 23031-1240