ABSTRACT A new hybrid geoid model for Turkey entitled Turkish Geoid Model-2020 (TG-
20) has been determined and validated using historical and recently acquired terrestrial …

In this paper stochastic properties are discussed for the final results of the application of an
innovative approach for uncertainty assessment for network computations, which can be …

The estimate of a high precision quasi-geoid is nowadays a relevant goal in Geodesy.
Quasigeoid can be used to compute the geoid which is an equipotential surface of the …

Covariance function modeling is an essential part of stochastic methodology. Many
processes in geodetic applications have rather complex, often oscillating covariance …

In this work we analysed the time series of daily solutions of 4 Italian GPS permanent
stations with the aim of investigating the presence of temporal correlations and their impact …

Covariance determination as the heart of Least Squares Collocation gravity field modeling is
based on fitting an analytical covariance to the empirical covariance, which is stemmed from …

Geodesy deals with the accurate analysis of spatial and temporal variations in the geometry
and physics of the Earth at local and global scales. In geodesy, least-squares collocation …

The article describes an implementation of the negative log-likelihood function in the
determination of uncorrelated noise standard deviation together with the parameters of …

The use of geodetic data for crustal deformation studies is studied for the two possible
cases:(a) The comparison of shape at two epochs for which station coordinates are …

Data quality check of GPS permanent stations is a crucial topic for all the applications where
their observations can be employed, both in post-processing (geodesy, surveying …