The IBGE, in tune with technological evolution as the manager of the Brazilian Geodetic System (SGB), has adopted the SIRGAS2000 reference system in February 2005. This technology is used together or separately, in the obtention of three-dimensional coordinates (latitude, longitude and ellipsoidal or geometric altitude). GPS (Global Positioning System, the North American System) is the most popular and know GNSS, but there are others such as GLONASS (Russian), Galileo (European) and BeiDou (Chinese). Systems such as GPS, GLONASS, Galileo and Beidou democratized the obtention of coordinates With the bigger use of Global Navigation Satellite Systems, GNSS, there was a revolution in georeferencing activities, allowing every person with a to obtain coordinates in the same reference system anywhere on the planet,” says the coordinator. Also, each country adopted its own reference system, making complex the sharing of geographic information in frontier regions. “These activities would last months, from the taking of measurements up to the conclusion of calculation. They took measurements using optical equipment and procedures and extensive calculation to obtain a pair of coordinates a point on the surface of a solid, the ellipsoid, a mathematical representation closer to the Earth’s surface. Up to the beginning of the 1990’s, the process of obtention of coordinates was concentrated in professionals such as topographers and engineer surveyors or cartographers. However, to be shared on several databases, these pieces of information need to be related to one same reference system. The IBGE Geodetics and Cartography coordinator, Sonia Maria Alves Costa, explains that it is possible to represent any type of information on the Earth surface on a map, by means of a mathematical system of coordinates, in a bidimensional way (latitude and longitude) or 3-dimensional (latitude, longitude and altitude). Why has the new Reference System been adopted? That will make it easier for developers to transform coordinates between systems in a transparente way for users and their applications. Another advantage of the online version is the simpler maintenance by the IBGE, in comparison with a desktop application, and the possibility of being executed from different platforms and operational systems, not being restricted to Windows.Īlso expected for this year is the release of API (Application Program Interface) of ProGriD. This way, a big volume of information can be subject with expected response in a few minutes, depending on the user’s Internet connection. With the new web application, the average response time is of approximately one minute for files with up to 100 thousand points. Also, the transformation of a big number of points takes a long time. The desktop version of ProGriD was made available to users in 2009, however, due to the several updates of the Windows platform, some problems started to occur in the transformation by means of grids – one of the transformation methods. The new tool will be available only on the IBGE websiteand provides users with a significant improvement of the service by means of the online calculation, in comparison with the desktop version. The online application also supports different formats of coordinates. ![]() ProGriD Online replaces the desktop version, which has not been updated for new versions of the Windows environment. ![]() The IBGE has released today (29) ProGriD Online, an application for the transformation of coordinates between previous classic reference systems, mainly those adopted in Brazil – such as Córrego Alegre and SAD 69 –, and SIRGAS2000, the currently used reference system, adopted since 2005 all over the national territory. ![]() New application facilitates transformation of coordinates between classic reference systems and the currently used one - Photo: Art on mockup The application is used by professionals that work with geographic information systems and cartographic bases that still have reference information in the former systems.The release of ProGriD’s API is also expected for this year, thus facilitating the promotion of coordinate transformation in its applications.With this new online application, the average response time is of approximately one minute for files with 100 thousand points.Available on the IBGE website, ProGrid Online guarantees significant improvement in transformation, in comparison with the previous desktop version.A new online version transfers coordinates between classic reference systems previously adopted in Brazil - Córrego Alegre and SAD 69 –, and SIRGAS2000, the system currently used and in effect since 2005.
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