The use of the solution of the Geodetic Boundary Value Problem to the national linkage to an International Height Reference System: a conceptual review
Article Sidebar
Main Article Content
Abstract
The need to obtain heights with physical meaning is of great importance for engineering and, in a unique way, for Brazilian Army; this is because, historically, Brazilian Army acts in striking engineering interventions in the most varied corners of the national territory, which depend directly on the reliable determination of these heights. In this sense and for these purposes, there is a latent need to establish a vertical reference system in a national level with a strong physical base, fully linked to a global system with the same characteristics and according to current trends in the field. As recommended by the International Association of Geodesy (IAG), the state-of-art of altimetric determinations and vertical reference systems has, as its guideline, the search for the definition of an International Height Reference System (IHRS). This definition must be made by taking as reference an equipotential surface of Earth's gravity field with pre-defined geopotential value, and its primary vertical coordinates being defined based on a geopotential difference. In turn, the calculation of this geopotential is carried out, modernly, through the solution of the Geodetic Boundary Value Problem (GBVP) by different approaches, such as free and fixed scalar forms, each with advantages and recommendations. Thus, the present paper presents a conceptual review on these different techniques for the GBVP solution, evidencing variants and limitations, emphasizing also the benefits received for the Brazilian Army.
Downloads
Metrics
Article Details
Authors who publish in this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors can enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) before and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (see "The Effect of Open Access").
