Naslov
Estimation usability of the free software for transformation of geodetic coordinates between local and global datums - example of the Adriatic Sea

Autori
Duplančić-Leder, Tea ; Leder, Nenad

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

Izvornik
24 th International Cartographic Conference - The World's Geo-Spatial Solutions / - Santiago : Institut za suvremenu umjetnost, 2009

ISBN
978-1-907075-02-5

Skup
24 th International Cartographic Conference - The World's Geo-Spatial Solutions

Mjesto i datum
Santiago, Čile, 15.11.2009. - 21.11.2009

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
datum transformation ; Helmert transformation ; Molodensky transformation

Sažetak
The paper gives a brief outline of basic terms linked with global and local rotational ellipsoids and their datums as geoid approximations. It describes geodetic coordinate systems used to define the position of a point on the Earth. Several transformations are used to shift between local and global datums, but the Helmert and the Molodensky transformations are the most common ones. In order to estimate the usability of free software, 16 points were selected in a patterned distribution on the Eastern Adriatic coast. For each point, geodetic coordinates were transformed from the local ones to the WGS84 coordinates using a more accurate Helmert transformation (Trimble HYDROpro software with its parameters). After that, these coordinates were transformed using the Molodensky transformation, and the results were compared. The conclusion is that five free software products obtained satisfactory results, whereas one yielded somewhat poorer results.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Geodezija

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