Update and implementation of the Colombian reference frame MAGNA ITRF2014

Abstract

According to international standards of the International Geodesy Association (IAG), the United Nations General Assembly (UN) and other entities, the different global reference frames must adhere to a set of parameters that allow reliability and confidence in the quality of the georeferenced data.

Colombia has a reference frame (MAGNA-SIRGAS) product of the densification of the ITRF (International Terrestrial Reference Frame) that complies the requirements of the users and that will inevitably be modernized according to the world orders. Recently, the ITRF2014 materialization consolidated a series of analyzes and observations that fully conform to the general objective of maintaining and improving the international geodetic infrastructure for sustainable development and, in turn, the strengthening of the Global Geodetic Reference Frame (GGRF).

The Instituto Geográfico Agustín Codazzi (IGAC) as the guiding agency for geodesy in the country and its mission to strengthen a stable and consolidated reference frame at the national level, it is in the process of updating ITRF of its geodesic network compo sed of more than 5000 points materialized, based on international methodologies and taking into account the provisions of the SIRGAS organization. This implies the inclusion and application of concepts such as regional velocity models (VEMOS), variations in the parameters of transformation (Rates) and the multiplicity of realizations (ITRF and IGS) since the national validity was established (ITRF94). This allows a full coupling with the global and regional context, as well as providing certainty in the basic information for infrastructure, cadastre, mapping, mining, agriculture and other processes carried out in the national territory.