Accès ouvert
2026
conference-paper
OpenAlex
Vassiliki Krey, Xanthos Papanikolaou, Maria Tsakiri
Abstract:Non-gravitational forces play a crucial role for Precise Orbit Determination of artificial satellites and has been proven to be one of its major error sources. In addition to atmospheric drag, the other major non-gravitational forces acting on a satellite are due to …
gr
(code pays fourni par la source)
Accès ouvert
2026
conference-paper
OpenAlex
Xanthos Papanikolaou, Vissarion Fisikopoulos, Dimitris Anastasiou, Maria Tsakiri
Over the last few years, DSO has been developing its own in-house DORIS data processing software tools, with the aim of delivering state-of-the-art, free and open-source software to the DORIS community through an open and collaborative development model. The software architecture is …
gr
(code pays fourni par la source)
Accès ouvert
2026
conference-abstract
OpenAlex
Dimitrios Anastasiou, Xanthos Papanikolaou, George Serelis, Vissarion Fisikopoulos et autres
For the last few years, Dionysos Satellite Observatory (DSO) of the National Technical University of Athens (NTUA) has undertaken the challenging task of developing a new, open-source and free software toolkit to facilitate the processing of DORIS observations for Precise Orbit Determination …
gr
(code pays fourni par la source)
Accès ouvert
2026
book-chapter
OpenAlex
Vassiliki Krey, Xanthos Papanikolaou, Dimitrios Anastasiou, Georgios Serelis et autres
Abstract For the Precise Orbit Determination (POD) of Earth orbiting satellites, the accurate knowledge and modeling of non-gravitational forces is essential. The aim of this study is to accurately and efficiently model accelerations induced by both Solar Radiation Pressure (SRP) and Earth …
gr
(code pays fourni par la source)
Accès ouvert
2026
book-chapter
OpenAlex
Georgios Serelis, Dimitrios Anastasiou, Xanthos Papanikolaou, Vangelis Zacharis et autres
Abstract The precise determination of satellite orbits is a complex problem that significantly affects quality of geodesy related applications, such as positioning, altimetry and gravity field determination. In this paper, the workflow and methodology adopted to develop a state-of-the-art open-source software, capable …
gr
(code pays fourni par la source)
2025
preprint
OpenAlex
Andreas Karavias, D. Anastasiou, Nikos Svigkas, Xanthos Papanikolaou et autres
We analyze and discuss surface deformation patterns related to the Santorini Caldera unrest, spanning from summer 2024 to January 2025. Synthetic Aperture Radar (SAR) interferometry was performed exploiting the Persistent Scatterer Interferometry (PSI) technique. We used both satellite geometries of the Sentinel-1 …
gr, it
(code pays fourni par la source)
Accès ouvert
2025
conference-abstract
OpenAlex
D. Anastasiou, Panos Psimoulis, Xanthos Papanikolaou, Maria Tsakiri
Permanent GNSS stations providing high-rate data have become a well-established practice, offering valuable insights into co-seismic displacement and seismic wave propagation during earthquakes. This study focuses on the co-seismic displacements induced by the doublet of earthquakes with magnitudes Mw 7.8 and Mw …
gr, gb
(code pays fourni par la source)
Accès ouvert
2025
conference-abstract
OpenAlex
Vassiliki Krey, Xanthos Papanikolaou, Maria Tsakiri
Solar Radiation Pressure (SRP) plays a crucial role for Precise Orbit Determination of artificial satellites as it has been proven to be one of its major error sources. An essential parameter used for the calculation of SRP is the eclipse factor. To …
gr
(code pays fourni par la source)
Accès ouvert
2024
conference-abstract
OpenAlex
D. Anastasiou, Xanthos Papanikolaou, Georgios Serelis, Maria Tsakiri
The analysis of data from permanent Global Navigation Satellite System (GNSS) stations plays a pivotal role in the assessment of ground motion within a given region. Greece, situated at the convergence zone of various tectonic plates, experiences heightened seismic activity and other …
gr
(code pays fourni par la source)
Accès ouvert
2024
dataset
OpenAlex
Dimitrios Anastasiou, Costas Raptakis, Xanthos Papanikolaou, Vangelis Zacharis et autres
Station name and identifier (IGS code): SNTR00GRC Domes number: 12653M001 Geographic coordinates (latitude, longitude, height): 36.212754, 25.212548, 137.9 Data access information (e.g., URL to data files, embargo period): http://dionysos.survey.ntua.gr/dsoportal/_datacenter/httpdata.html DSO solution: http://dionysos.survey.ntua.gr/dsoportal/_dataanalysis/BERN52PROC/siteprocinfo.php?station=sntr Contact information for the station operator: Dimitrios Anastasiou, danastasiou@mail.ntua.gr Link …
gr
(code pays fourni par la source)
Accès ouvert
2024
dataset
OpenAlex
Dimitrios Anastasiou, Costas Raptakis, Xanthos Papanikolaou, Vangelis Zacharis et autres
Station name and identifier (IGS code): SNTR00GRC Domes number: 12653M001 Geographic coordinates (latitude, longitude, height): 36.212754, 25.212548, 137.9 Data access information (e.g., URL to data files, embargo period): http://dionysos.survey.ntua.gr/dsoportal/_datacenter/httpdata.html DSO solution: http://dionysos.survey.ntua.gr/dsoportal/_dataanalysis/BERN52PROC/siteprocinfo.php?station=sntr Contact information for the station operator: Dimitrios Anastasiou, danastasiou@mail.ntua.gr Link …
gr
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
S. Akras, H. Monteiro, J. R. Walsh, J. García–Rojas et autres
ABSTRACT Integral field spectroscopy (IFS) provides a unique capability to spectroscopically study extended sources over a 2D field of view, but it also requires new techniques and tools. In this paper, we present an automatic code, Spectroscopic Analysis Tool for intEgraL fieLd …
gr, br, de, es, mx
(code pays fourni par la source)