The determination of vertical component plays a fundamental role in the initial phase of
engineering applications. However, its acquisition is technically and economically …

Abstract The Istanbul GPS Triangulation Network (IGTN) and the Istanbul Levelling Network
(ILN), established in 2006, provide data for the determination of a local GNSS/levelling …

This study evaluated different methods for geoid undulation prediction and included two
types of artificial neural networks (ANNs)-the radial basis function neural network (RBFNN) …

The main purpose of this paper is to present the results of 'external'quality tests for global,
regional and local geoid models. In this context, available geoid models were evaluated for …

Open global digital elevation models (GDEMs) represent a free and important source of
information that is available to any country. Fusion processing between global and national …

This study provides a comprehensive comparison of four different machine learning models
including the group method of data handling (GMDH), M5 model tree (M5MT), multivariate …

Least-squares collocation (LSC) is a crucial mathematical tool for solving many geodetic
problems. It has the capability to adjust, filter, and predict unknown quantities that affect …

In order to convert ellipsoidal heights obtained by the Global Navigation Satellite System
(GNSS) to orthometric heights, it is necessary to know the distance between the ellipsoidal …

This study aimed to determine the most suitable local geoid model based on 641
GNSS/leveling points within the borders of Kars Province in eastern Turkey using the …

Sažetak Određivanje geoida pomoću GNSS-nivelmana definirano je kao matematički odnos
između ortometrijske i elipsoidne visine. Metoda interpolacije polinomne površine jedna je …