L. Gerhatova

L. Gerhatova
Slovak University of Technology in Bratislava

About

20
Publications
1,177
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145
Citations
Citations since 2016
6 Research Items
51 Citations
20162017201820192020202120220246810
20162017201820192020202120220246810
20162017201820192020202120220246810
20162017201820192020202120220246810

Publications

Publications (20)
Conference Paper
The paper deals with issue of computation of the sunrays penetration through point cloud data with considering the geometrical and astronomical principles in calculating the Sun position relative to points of the objects on the Earth surface. Input data are represented by point cloud obtained by the method of terrestrial laser scanning and they exp...
Article
Full-text available
The variability of daily site coordinates at permanent GNSS station is a sum of many disturbing factors influencing the actual satellite observations, data processing, and bias modelling. In the paper are analysed possibilities of monitoring the instability of GNSS antenna pillar monument by the independent observations using the precise inclinatio...
Conference Paper
Full-text available
Article deals with possibility to detect the mutlipath effect in satellite signal. Application MultipathAnalysis made in MATLAB environment will be presented. This application enable input of normally used observation and ephemeris file formats to generate graphical and numerical outputs concerning with multipath influence at site. To show impact o...
Article
Multipath in GPS observations is generally considered as a disturbing effect systematically influencing static and kinematic positioning. The broadcasted satellite microwave signal directly reaching the GPS antenna is interfered with the satellite signal reflected from the terrain around the antenna. Motion of the satellite in the sky and features...
Article
The CEGRN 2011 Campaign took place from 20 to 25 June 2011. It was a coordinated effort of 14 Central European Countries: Austria, Bosnia Herzegovina, Bulgaria, Croatia, Czech Republic, Germany, Hungary, Italy, Poland, Rumania, Serbia, Slovakia, Slovenia and Ukraine, with the involvement of some 85 stations. Data processing with state of the art so...
Article
The high-rate recordings of GPS satellite signals with 1 s sampling which are feasible for majority of recent GPS receivers are used predominantly in navigation or kinematic surveying applications. In the paper is evaluated the potential of GPS positioning in kinematic mode for monitoring the actual site movements related to the seismic phenomena....
Article
Precise Point Positioning (PPP) which is based on processing of un-differenced GNSS phase and code observations using the precise satellites orbits and satellites clocks is suitable for autonomous high quality geocentric coordinate determination without necessity of terrestrial reference sites. Increase of number of broadcasted GNSS signals and the...
Article
The Precise Point Positioning (PPP) analysis technique adapted for monitoring of moderate high-rate coordinate variations from GPS observations is applied for measuring actual displacements related to earthquakes. Two approaches are examined: kinematic PPP which is suitable for larger displacements and analysis of residuals from quasi-static PPP wh...
Article
Full-text available
The local, regional and global geodetic networks are recently almost exclusively observed by satellite radionavigation methods, such as the U.S. Global Positioning System (GPS), and the Russian navigation system GLONASS. The unprecedented accuracy of geodetic satellite positioning allows determination of the geocentric site coordinates at millimetr...
Article
The Precise Point Positioning (PPP) technique using the un-differenced GPS observations and the precise IGS orbits and satellite clock products is recently a frequently used approach for geocentric coordinate determination. Until now, only the GPS observations are used for PPP mainly due to fact, that for the other GNSS the precise satellite clocks...
Article
The paper is focused to the analysis of permanent and epoch-wise GPS networks extending over the region of Slovakia. We considered almost all available GPS data measured in Slovakia and its close surroundings over the period of last 17 years. Our analysis is based on combination of homogenized permanent and epoch-wise network solutions leading to t...
Article
The understanding of the intraplate tectonics of Central Europe requires a detailed picture of how stress is transferred from the interaction of the Eurasian, Nubian and Anatolian plates to the Alpine, Carpathian, Pannonian and Dinaric regions. Recent strain distribution is controlled by the Adria horizontal push, by the Vrancea vertical slab pull...
Chapter
Cooperation of 14 Central European countries in the framework of the Central Europe Regional Geodynamics Project (CERGOP) resulted in determination of coordinates and velocities for more than 50 sites in Central Europe, Alpine-Adria region and Balkan Peninsula. The set of selected stations with carefully checked monumentation and observational envi...
Article
The Central European Geodynamics Project CERGOP-2, funded by the European Union from 2003 to 2006 under the 5th Framework Programme, benefited from repeated measurements of the coordinates of epoch and permanent GPS stations of the Central European GPS Reference Network (CEGRN), starting in 1994. Here we report on the results of the systematic proc...
Article
Series of repeated epoch-wise GPS campaigns performed in Central European region are used for estimation of site velocities. The main features of campaign processing and combination of network solutions are outlined. The velocities obtained from epoch observations within the Central Europe Regional Geodynamic Project covering the 11-year time span...
Article
Full-text available
Reference for geodynamical projects in Central Europe based on permanent GPS observations in the region. Experiences from one-year interval of data analysis. Method of processing the permanent GPS data and inclusion of epoch campaigns.
Article
The GPS CEGRN campaigns provide the basis for investigating tectonic movements in the region of Central Europe. The observations started in 1994 and will be prolonged for decades. The campaigns 1994-2001 have been recomputed using the newest pro- cessing standards and the campaign 2001 has been added. A repeatability of some millimeters and the qui...

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