Naslov
INTERPOLATION OF WATER DEPTH DATA CAPTURED BY A MULTIBEAM ECHOSOUNDER SYSTEM TO ELEVATION MODELS

Autori
Rusan, Leonarda

Vrsta, podvrsta i kategorija rada
Ocjenski radovi, diplomski rad, diplomski

Fakultet
Geodetski fakultet

Mjesto
Zagreb

Datum
17.09

Godina
2021

Stranica
48

Mentor
Poslončec-Petrić, Vesna ; Schmidt, Benno

Neposredni voditelj
Cibilić, Iva

Ključne riječi
interpolation, multibeam echosounder system, Ordinary Kriging, QGIS software

Sažetak
With the help of The Department of Geodesy of Bochum University of Applied Science, measurements of underwater topography at the lake in Haltern, using a multibeam echosounder system, were conducted. Collected 3D point cloud is described and its characteristics are listed and explained. Four types of interpolation methods were applied on the data, Inverse Distance Weight (IDW), Triangulated Irregular Network (TIN), Ordinary Kriging (OK) and Cubic Spline interpolation. For application of interpolation on the measured data, QGIS software was used. The question of which interpolation methods are suitable with regard to the special properties of the measurement data was investigated. For each interpolation method, one raster as a result was created. With the help of histograms that belong to each resulting raster, and the statistical data, conclusions were made. Interpolation method that best suits the measured data used in this thesis work is Ordinary Kriging. Resulting raster is the smoothest without no-data cells.

Izvorni jezik
Engleski

Znanstvena područja
Geodezija

POVEZANOST RADA