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In October 2002, the SIRGAS Directing Council decided the implementation of a web page summarising the main characteristics of SIRGAS. The design, maintenance and update of the SIRGAS web page was defined as a responsibility of the SIRGAS President and Vice-president. The first version of the SIRGAS web page was hosted by the Instituto Brasileiro de Geografia e Estatística (IBGE), affiliation of the SIRGAS President at that time, Luiz Paulo Souto Fortes. This web site described the objectives and structure of SIRGAS, included the new SIRGAS Bylaws, and contained the main SIRGAS products: SIRGAS95 and SIRGAS2000 coordinates and the first VEMOS model. Through this web site the routinely issue of the SIRGAS Newsletters was established. In December 2004, the SIRGAS Vice-president for the term 2003 – 2007, Eduardo Lauría, assumed the maintenance and modernisation of the SIRGAS web site and moved the wen from IBGE to the Instituto Geográfico Nacional (IGN) of Argentina. This new site offered interactive tools to easily find the SIRGAS95 and SIRGAS2000 coordinates for desired stations as well as to get station velocities from the VEMOS model. New sections corresponding to the SIRGAS Working Groups were introduced. In August 2007, the responsibility of the SIRGAS web maintenance is assumed by the new SIRGAS Vice-president, Laura Sánchez (term 2007 – 2015), and with the support of the Deutsches Geodätisches Forschungsinstitut, Technische Universität München (DGFI-TUM), the web is moved to www.sirgas.org. This new site initially kept the same design introduced by the IGN-Argentina and IBGE in the previous web sites, but the structure of the web is modified in accordance with the development of SIRGAS. New sections are implemented following the establishment of new SIRGAS components, in particular, the continuously operating reference network, the SIRGAS analysis centres of the reference network, the atmospheric analysis centres, and the SIRGAS products (weekly station positions, multi-year solution, deformation models VEMOS). An important component of the www.sirgas.org is the repository of a huge index of publications and presentations published by the SIRGAS community. In accordance with the recent developments in SIRGAS, specially the interaction with the Regional Committee of the United Nations on Global Geospatial Information Management for the Americas (UN-GGIM: Americas), it was decided to move the SIRGAS web page from www.sirgas.org to https://sirgas.ipgh.org/. The new site is hosted by the Pan-American Institute for Geography and History (PAIGH). Its maintenance continues being a responsibility of the SIRGAS President and Vice-president with the support of PAIGH. https://sirgas.ipgh.org/ contains basically the same information and data like www.sirgas.org, so that the SIRGAS users can assumed this transition smoothly. https://sirgas.ipgh.org/ is operative since August 2021.

As part of the communication program of the geodetic activities carried out in the Americas and the Caribbean, SIRGAS invites the geodetic community to participate in the webinar “Geodetic activities in the Americas“. The following presentations will be held there:

• Venezuela, aiming at the reestablishment of the national geodetic system

For some years, Venezuela has gone through political, economic and social situations, which have led to the disappearance of the national geodetic system. Currently, despite going through a difficult time historically, the restructuring of its continuous monitoring system and the proposal of an experimental processing center focused on GNSS data has been proposed.

Speaker: Miguel Ríos (IGVSB)

• The National Geodetic Network: a continuous and essential service for the planning of territorial development in Colombia

The presentation aims to show how in Colombia the National Geodesic Network, through the Multipurpose Cadastre, has acquired relevant importance in the development processes of Territorial Entities, in particular, those established in Development Projects with a Territorial Approach (PDET), inasmuch as it provides the spatial framework on which all the training, updating and cadastral conservation activities are developed for the preparation and strengthening of the Territorial Development Plans in their environmental, social and economic components.

This approach seeks to strengthen the processes for the standardization and integration of data within the framework of the Spatial Data Infrastructure (ICDE), so as to allow the implementation of strategies that facilitate the sharing of GNSS technological infrastructure to provide free, accurate information, quality, opportunity and covering the largest amount of the national territory. With the strengthening of the National Geodetic Network, it is conceived to implement services in real time that meet the needs of users who require precise coordinates for the development of their projects, through RTCM Network Transport via Internet Protocol (NTRIP), Virtual Reference Stations (VRS) and Processing in a Precise Point Web environment (PPP), through a strengthened Control Center that allows administering and managing active and passive networks, so that through a series of alerts it allows administrators The system should act promptly and clearly inform users of the state of the network at a given moment.

With this modernization project of the National Geodesic Network, through the multipurpose Cadastre, geodesy becomes a continuous and essential service for the planning of Territorial development in Colombia and is consolidated as a support tool for the elaboration of public policies, programs and projects of the national, departmental and municipal governments.

Speaker: José Ricardo Guevara (IGAC)

Event date:

July 29, 2021 03:00 p.m. (UTC)

Meeting link:

https://reuna.zoom.us/j/83301223849?pwd=czUzeXAwOXQvS2JXYnpxRE5Ra0Mwdz09#success
Meeting ID: 833 0122 3849
Access code: 403601