Displacement of the positions obtained with the PPP – IBGE caused by changes in transformation parameters between IGb08 and SIRGAS2000

Authors

DOI:

https://doi.org/10.33448/rsd-v11i5.27905

Keywords:

ITRF; IGb08; Helmert transform; Precise point positioning.

Abstract

In this work we have investigated the displacement in coordinates processed by the PPP-IBGE before 17/05/2020, when the IBGE adopted new transformation parameters between IGb08 and SIRGAS2000. The parameters Applied until the former date considered 3 translations, 1 scale fator and 3 rotations between both geodetic reference systems. The parameters adopted after 15/05/2020 not only show slightly diferences in translations but also adopted null rotations, that is, both systems were considered to be parallel. For demonstration purpose, we used data processed by the PPP-IBGE in 2016, before the change in parameters. The coordinates converted from IGb08 to SIRGAS2000 using both set of parameters were calculated and compared, and the resulting displacement was ~ 3 cm, as expected by the IBGE. Therefore, in all those cases in which the precision has not to be better than 3 cm the change in parameters can be neglected.

Author Biographies

Thiago Statella, Instituto Federal do Mato Grosso

Engenheiro Cartógrafo (2002), Mestre (2005) e Doutor (2012) em Ciências Cartográficas pela Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP. Professor Titular do Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso - IFMT. Possui experiência em Geociências, com ênfase em Cartografia, Sensoriamento Remoto e Processamento Digital de Imagens. Atualmente, trabalha na linha de pesquisa Computação de Imagens voltada para as ciências planetárias.

Patrícia Regina da Silva Gonçalves, Instituto Federal do Mato Grosso

Graduanda do curso Superior de Tecnologia em Geoprocessamento do IFMT.

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Published

09/04/2022

How to Cite

STATELLA, T.; GONÇALVES, P. R. da S. . Displacement of the positions obtained with the PPP – IBGE caused by changes in transformation parameters between IGb08 and SIRGAS2000. Research, Society and Development, [S. l.], v. 11, n. 5, p. e34011527905, 2022. DOI: 10.33448/rsd-v11i5.27905. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/27905. Acesso em: 14 nov. 2024.

Issue

Vol. 11 No. 5

Section

Exact and Earth Sciences

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Copyright (c) 2022 Thiago Statella; Patrícia Regina da Silva Gonçalves

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