MERCATOR PROJECTION ON THE SPHERE, A DEDUCTION WITHOUT MATHEMATICAL GAP

Isaac Ramos; Andréa de Seixas; Silvio Jacks dos Anjos Garnés; Lucas Gonzales Lima Pereira Calado

doi:10.4215/rm2025.e24014

Isaac Ramos Federal University of Pampa, Itaqui (RS), Brazil http://orcid.org/0009-0009-9657-4060
Andréa de Seixas Federal University from Pernambuco, Recife (PE), Brazil http://orcid.org/0000-0002-5879-4902
Silvio Jacks dos Anjos Garnés Federal University from Pernambuco, Recife (PE), Brazil http://orcid.org/0000-0002-0098-6645
Lucas Gonzales Lima Pereira Calado Federal University of Pernambuco, Recife (PE), Brazil http://orcid.org/0000-0002-2456-8288

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Resumen

La proyección cartográfica es el proceso matemático de convertir la superficie de la Tierra, considerada como una esfera o un elipsoide, en un mapa. Esta conversión se realiza proyectando puntos de la Tierra sobre una superficie, que puede ser un plano, un cono o un cilindro. Así, su objetivo es crear una base matemática para la creación de mapas, imprescindible para la cartografía, geodesia y navegación. Sería ideal que todos los mapas fueran isométricos, sin embargo, para áreas grandes, la curvatura de la Tierra genera distorsiones. Por las razones expuestas, las matemáticas de las proyecciones cartográficas son complejas, pero es importante comprenderlas. Entre los varios tipos que existen, la proyección Mercator, creada por Gerard Mercator en 1569, es una proyección cilíndrica conforme, muy utilizada en navegación, ya que representa las líneas de rumbo en el mapa como líneas rectas, pero, a pesar de conservar los ángulos, genera otras distorsiones. El objetivo de este artículo es presentar una derivación matemática la más completa posible de la proyección de Mercator sobre la esfera, con el fin de evitar al máximo simplificaciones y omisiones, y, como aplicación, utilizar las ecuaciones deducidas para implementar una visualización de los continentes en Python.

Palabras-clave: Cartografía Matemática, Mapeo, Proyección Cilíndrica Conforme.

Biografía del autor

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Master in Geodetic Sciences and Geoinformation Technologies. Federal University of Pernambuco, UFPE, Brazil.

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PhD in Geodetic Engineering (Doctor of Technical Sciences) from the Technical University of Vienna, Austria (2001). She is currently Associate Professor IV at the Federal University of Pernambuco. She has experience in the area of Geosciences, with emphasis on Geodesy, working mainly on the following topics: Topographic and Geodetic Surveys, Cadastral Surveys, Reference Systems, Geodetic Instrumentation, Geodetic Engineering, Deformation Measurement, Settlement Control and Monitoring, Optical 3D Measurement Techniques. She developed activities focused on Judicial Expertise designated by a Federal Judge, regarding the Definition of Intermunicipal Limits (2009 to 2012) and Coastal Dynamics at the Mouth of the São Francisco River and Adjacencies (2013 to 2016). She is a member of the Postgraduate Program in Geodetic Sciences and Geoinformation Technologies at the Federal University of Pernambuco (she served as Vice Coordinator of Postgraduate Studies from 2005 to 2008 and 2015 to 2016 and as Coordinator of Postgraduate Studies from 2009 to 2010 and 2017 to 2021). She teaches in the Undergraduate Courses in Cartographic and Surveying Engineering, Civil Engineering, Architecture and Urbanism and in the Postgraduate Course in Geodetic Sciences and Geoinformation Technologies. She works in the training of human resources, supervises monitoring, scientific initiations, and completion work for undergraduate and postgraduate courses. Awarded the Order of Cartographic Merit - OMC in the rank of Officer, ceremony commemorating the Day of the Cartographic Engineer in 2016.

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PhD in Geodetic Sciences from the Federal University of Paraná (2001). He worked from 1994 to 2008 at UNIDERP in the courses of Surveying Engineering, Civil Engineering and Agronomy. For seven years he coordinated the geoprocessing laboratory at UNIDERP and was a professor in the postgraduate programs in Environment and Regional Development and Agroindustrial Production and Management, in the chairs of geoprocessing and precision agriculture. Since the end of 2008 he has been a professor at the Federal University of Pernambuco, in the Department of Cartographic Engineering of the Cartographic and Surveying Engineering Course and of the postgraduate program in Geodetic Sciences and Geoinformation Technologies, working with greater emphasis on Geodesy, mainly in the following themes: GNSS positioning, physical geodesy, observation adjustment, tectonic movements, high-precision geodetic networks. He has worked in technical registration and land regularization of federal areas with the SPU from 2012 to 2016. He is the leader of the CNPq Research Group on Land Regularization. He coordinates LAASTRO - UFPE's Astronomy Laboratory with social projects in the area. He has worked in judicial expertise and stands out as a programmer, being the author of the AstGeoTop and CRDF (Digital Certificate of Land Regularization) software. Since 2016, he has been developing Regularization work with the Ministry of Regional Development and since 2021 has been working in partnership between UFPE and the Legal Housing Program of TJPE and CGJPE.

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PhD in Cartographic Sciences from FCT/Unesp - Presidente Prudente Campus. My main research areas focus on the application of Geodesy to: i) understand sea level variations, ii) estimate the vertical displacement of the Earth's crust and iii) apply satellite positioning. I am the founder and coordinator of the Study Group on Geodesy for Sea Level Monitoring (GEOMAR). I am a permanent member of the Postgraduate Program in Geodetic Sciences and Geoinformation Technologies - UFPE. Institutional affiliation: Department of Cartographic Engineering, Center for Technology and Geosciences.

Citas

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PROYECCIÓN DE MERCATOR SOBRE LA ESFERA: UNA DEDUCCIÓN SIN LAGUNAS MATEMÁTICAS

Resumen

Biografía del autor

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