Modelagem de distorções entre sad 69 e sirgas 2000 pelo método de shepard e grades regulares


Autoria(s): Magna Junior, Joao Paulo; Camargo, Paulo de Oliveira; Galo, Mauricio
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/07/2009

Resumo

Brazil follows the tendency of some countries to update and/or review their fundamental geodetic network. The adoption of geocentric referentials like SIRGAS 2000, the new official reference system of the Geodetic Brazilian System has been an advance. Changes in referential implies in coordinates changes on the network stations as well as the network geometry. To make use of analogical and digital products which are already known in the old referentials are necessary approaches to the coordinate conversion, which minimize the distortions between the used reference frames. This paper presents a distortion modeling approach between reference frames, based on distortion grid generation by using the Shepard's method. To analyze the approach some experiments were performed with the generation of a 1 degrees x1 degrees distortion grid to model the distortions between SAD 69 (1996) and SIRGAS (2000) frames. The results in the test stations were promising, with an average reduction of 50% in the RMS coordinates after the distortions modeling.

Formato

388-409

Identificador

http://ojs.c3sl.ufpr.br/ojs2/index.php/bcg/article/view/15505

Boletim de Ciências Geodesicas. Curitiba Pr: Universidade Federal do Paraná (UFPR), Centro Politecnico, v. 15, n. 3, p. 388-409, 2009.

1413-4853

http://hdl.handle.net/11449/6657

WOS:000270983800006

WOS000270983800006.pdf

Idioma(s)

por

Publicador

Universidade Federal do Paraná (UFPR), Centro Politecnico

Relação

Boletim de Ciências Geodésicas

Direitos

openAccess

Palavras-Chave #Reference systems #Distortion modeling #Shepards interpolator
Tipo

info:eu-repo/semantics/article