The Establishment of the IHRF in Brazil: Current Situation and Future Perspectives
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Abstract
The study and understanding of geodynamic aspects on the planet require global geodetic references with an order of accuracy better than the magnitude of the effects and with reliability. The International Association of Geodesy is responsible for the geodetic infrastructure for Earth system monitoring, more specifically, for providing reliable systems for the analysis and consistent modeling of global phenomena and processes that affect the Earth's gravity field. In this sense, the aim of this paper is to detail one of the current efforts that the geodesy community has been focusing on in recent years, which is the establishment of an international height reference system and how these efforts bring relevant benefits in the environmental, social, and economic areas too. Therefore, the definition of the system (resolutions, conventions, and constants), as well as its realization (infrastructure and mathematical formulation) are presented. Finally, considering the objective of this work, the situation of the new reference system in Brazil is presented, as well as numerical experiments aimed at illustrating the advances made in the country and pointing out future perspectives.
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