Naslov
A Method for High Precision Coordinate Transformation in Environmental GIS Applications

Autori
Ružić, Ivica ; Pečar-Ilić, Jadranka

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 21st Inter. Conf. on Informatics for Environmental Protection-EnviroInfo 2007: "Environmental Informatics and Systems Research", Volume 1 / Hryniewicz, O. ; Studzinski, J. ; Romaniuk, M. - Varšava : Shaker, 2007, 449-457

ISBN
978-3-8322-6397-3

Skup
21st International Conference on Informatics for Environmental Protection - EnviroInfo 2007

Mjesto i datum
Varšava, Poljska, 12.09.2007. - 14.09.2007

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
method for coordinate system transformations; GIS applications; environmental information; general polynomial coordinate transformation; interpolationinterpolation of northing/easting coordinates; central meridian

Sažetak
Development of a method for coordinate system transformations, which can be used within GIS applications for en-vironmental information management, is described. Transformation of geographic (in degrees) into geodetic (in m) coordinates was investigated using the old Yugoslav coordinate system (still in use in the newly established states of Slovenia, Croatia, Bosnia and Herzegovina, Serbia, Montenegro and Macedonia) as source data, with precision of cm. To simplify the transformation procedure, the general polynomial coordinate transformation was used, organized in several steps. First, an equation of the third order for interpolation of northing coordinates along a central merid-ian, as a function of latitude, was developed using a central difference scheme. Using the results obtained in such a way equations of second and fourth orders were developed for calculation of the increase in northing and shifts of easting from false easting, as a function of longitude (for a distance of 2o from the central meridian) along the corre-sponding parallel. Interpolation by 1o resulted in errors up to 5 cm, while interpolation by 30' resulted in errors below 1 cm, which corresponds to the precision of original source data. Interpolation by 15' or less cannot further increase the accuracy. Quadratic terms (about 485m/o) are dominant in equations for the increase in northing and linear terms (about 80000m/o) are dominant in those for the shift in easting, while other terms are in the range of centimetres or less.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Elektrotehnika

Napomena
Rad je referiran u FP7 ICT-ENSURE (European ICT Environmental Sustainability Research) Information System on Literature in the Field of ICT for Environmental Sustainability.

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