Details

Title

Planes coordinates transformation between PSAD56 to SIRGAS using a Multilayer Artificial Neural Network

Journal title

Geodesy and Cartography

Yearbook

2014

Volume

vol. 63

Numer

No 2

Publication authors

Keywords

PSAD56 ; SIRGAS ; Bidimensional transformations ; Artificial Neural Network

Divisions of PAS

Nauki Techniczne

Abstract

Prior any satellite technology developments, the geodetic networks of a country were realized from a topocentric datum, and hence the respective cartography was performed. With availability of Global Navigation Satellite Systems-GNSS, cartography needs to be updated and referenced to a geocentric datum to be compatible with this technology. Cartography in Ecuador has been performed using the PSAD56 (Provisional South American Datum 1956) systems, nevertheless it’s necessary to have inside the system SIRGAS (SIstema de Referencia Geocéntrico para las AmericaS). This transformation between PSAD56 to SIRGAS use seven transformation parameters calculated with the method Helmert. These parameters, in case of Ecuador are compatible for scales of 1:25 000 or less, that does not satisfy the requirements on applications for major scales. In this study, the technique of neural networks is demonstrated as an alternative for improving the processing of UTM planes coordinates E, N (East, North) from PSAD56 to SIRGAS. Therefore, from the coordinates E, N, of the two systems, four transformation parameters were calculated (two of translation, one of rotation, and one scale difference) using the technique bidimensional transformation. Additionally, the same coordinates were used to training Multilayer Artificial Neural Network -MANN, in which the inputs are the coordinates E, N in PSAD56 and output are the coordinates E, N in SIRGAS. Both the two-dimensional transformation and ANN were used as control points to determine the differences between the mentioned methods. The results imply that, the coordinates transformation obtained with the artificial neural network multilayer trained have been improving the results that the bidimensional transformation, and compatible to scales 1:5000.

Publisher

Commitee on Geodesy PAS

Date

2014

Type

Artykuły / Articles

Identifier

ISSN 2080-7636

References

Hwang (2006), You R Coordinate Transformation between Two Geodetic Datums of Taiwan by Least - Squares Collocation, Eng, 132.

DOI

10.2478/geocart-2014-0014

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