Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Spiros Pagiatakis"'
Publikováno v:
Geomatics, Natural Hazards & Risk, Vol 10, Iss 1, Pp 1738-1749 (2019)
Global navigation satellite systems (GNSS) is widely utilized in marine applications for high accuracy vertical positioning. The errors introduced to charts by the present use of traditional shore-based discrete point chart datum (CD) can become a si
Externí odkaz:
https://doaj.org/article/6a8c6ff8db5c4abaa4c61b52c89c9f45
Autor:
Athina Peidou, Spiros Pagiatakis
Publikováno v:
Geophysical Research Letters, Vol 47, Iss 4, Pp n/a-n/a (2020)
Abstract The Gravity Recovery and Climate Experiment (GRACE) gravitational models suffer from a dominant systematic error, usually referred to as “longitudinal stripes.” These stripes contaminate useful geophysical signals and limit the spectrum
Externí odkaz:
https://doaj.org/article/441c5ea367db435f948338b6faf00980
Autor:
Spiros Pagiatakis, Athina Peidou
Publikováno v:
Remote Sensing, Vol 13, Iss 21, p 4362 (2021)
Geopotential models derived from Gravity Recovery and Climate Experiment (GRACE) mission measurements are significantly obscured by the presence of a systematic artifact, known as longitudinal stripes. Based on our previous work (Peidou and Pagiataki
Externí odkaz:
https://doaj.org/article/ae53824bac1f498980102a38c9373dc8
Autor:
Spiros Pagiatakis, Mohammed El-Diasty
Publikováno v:
Sensors, Vol 9, Iss 11, Pp 8473-8489 (2009)
In this paper, we examine the effect of changing the temperature points on MEMS-based inertial sensor random error. We collect static data under different temperature points using a MEMS-based inertial sensor mounted inside a thermal chamber. Rigorou
Externí odkaz:
https://doaj.org/article/8f26b38ce53d4209bbc1d46df4f59a98
On the Potential of Least Squares Response Method for the Calibration of Superconducting Gravimeters
Publikováno v:
International Journal of Geophysics, Vol 2012 (2012)
One of the most important operating procedures after the installation of a superconducting gravimeter (SG) is its calibration. The calibration process can identify and evaluate possible time variability in the scale factor and in the hardware anti-al
Externí odkaz:
https://doaj.org/article/a431a4e8f7ee4fda954267b141fcebb3
Autor:
Myrto Tzamali, Spiros Pagiatakis
The onboard GRACE and GRACE-FO accelerometers measure the non-gravitational accelerations of the spacecraft that are indispensable for the modelling of the Earth’s gravity field since they are subtracted from the GPS POD total accelerations to isol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9544039d1c1d9d83c97822aa9882c641
https://doi.org/10.5194/egusphere-egu23-10422
https://doi.org/10.5194/egusphere-egu23-10422
Autor:
Spiros Pagiatakis, Myrto Tzamali
For the accurate determination of the gravity field of the Earth, the accelerometers on board GRACE and GRACE-FO missions need to be calibrated, which is a rather challenging task. In many gravitational field studies, the bias and scale factors are i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8569c97a77bb9e941597be217f459d23
https://doi.org/10.5194/egusphere-egu23-10423
https://doi.org/10.5194/egusphere-egu23-10423
Nedávné aplikace ve vědách o Zemi vyžadují, aby modely geoidů byly určeny s menší vnitřní chybou než centimetr. Regionální modely geoidu jsou obvykle určeny pomocí diskrétních gravitačních hodnot měřených na Zemi a/nebo mimo n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83fab334965bc359b7445dc025ec97e8
http://hdl.handle.net/11025/51912
http://hdl.handle.net/11025/51912
Autor:
Ismael Foroughi, Mehdi Goli, Spiros Pagiatakis, Stephen Ferguson, Petr Vanicek, Marcelo Santos, Michael Sheng
We estimate the uncertainty of the modelled geoid heights based on the standard deviations of the topographic mass density variation. We model the geoid using the one-step integration method considering mass density variations along with their associ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f23b6ec7ae1af2638139fc0c75cf52ec
https://doi.org/10.1007/1345_2023_189
https://doi.org/10.1007/1345_2023_189
Autor:
Myrto Tzamali, Spiros Pagiatakis
The purpose of this study is to diagnose how the magnetic disturbances and the flow of the vertical currents can be identified from the non-gravitational acceleration measurements of GRACE C. Whereas the non-gravitational measurements are routinely u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4be60acb9fbe7957b6df7aab818fce28
https://doi.org/10.5194/egusphere-egu22-8955
https://doi.org/10.5194/egusphere-egu22-8955