Results 11 to 20 of about 21,881 (214)

An influence of the covariance between single orbit parameters on the accuracy of observations of the pseudo-ranges and phase differences

open access: yesMetrology and Measurement Systems, 2020
The possibilities to improve values of the satellite orbit elements by employing the pseudo-ranges and differences of carrier phase frequencies measured at many reference GPS stations are analysed. An improvement of orbit ephemeris is achieved by solving
Skeivalas Jonas   +3 more
doaj   +1 more source

Atomic clocks for geodesy [PDF]

open access: yesReports on Progress in Physics, 2018
73 pages, 22 ...
Heiner Denker   +5 more
openaire   +4 more sources

Investigation of the Thiva 2020–2021 Earthquake Sequence Using Seismological Data and Space Techniques

open access: yesApplied Sciences, 2022
We investigate an earthquake sequence involving an Mw = 4.6 mainshock on 2 December 2020, followed by a seismic swarm in July–October 2021 near Thiva, Central Greece, to identify the activated structures and understand its triggering mechanisms. For this
George Kaviris   +14 more
doaj   +1 more source

Seismology and geodesy of the sun: Solar geodesy [PDF]

open access: yesProceedings of the National Academy of Sciences, 1981
Measurements of the elliptical figure of the sun made in 1966 are analyzed on an hourly basis. This analysis yields an improved measure of the previously found solar distortion, rotating rigidly with a sidereal period of 12.38±0.10 days. It also yields a set of residùals used to search for signals due to low-frequency solar oscillations.
openaire   +3 more sources

Perverted Space-Time Geodesy in Einstein’s Views on Geometry

open access: yesPhilosophia Scientiæ, 2018
A perverted space-time geodesy results from the idea of variable rods and clocks, whose length and rates are taken to be affected by the gravitational field.
Mario Bacelar Valente
doaj   +1 more source

Study of karst manifestations in Solotvyno based on aerial photography from a UAV

open access: yesReports on Geodesy and Geoinformatics, 2023
This article is devoted to the study of surface karst manifestations on the territory of inactive salt mines of Solotvyno, Transcarpathian region, Ukraine. The historical development of the salt mine from the moment of the creation of the first mine (the
Hlotov Volodymyr   +4 more
doaj   +1 more source

The usage of geospatial tools in traffic sign detection [PDF]

open access: yesZbornik radova Departmana za geografiju, turizam i hotelijerstvo, 2023
The topic of this scientific paper is the detection of traffic signs based on the data obtained using modern geodetic methods (LiDAR, mobile laser scanning), by using geospatial tools.
Nikolić Natalija   +2 more
doaj   +1 more source

Geodetic and Geodynamic Studies at Department of Geodesy and Geodetic Astronomy Wut

open access: yesReports on Geodesy and Geoinformatics, 2016
The article presents current issues and research work conducted in the Department of Geodesy and Geodetic Astronomy at the Faculty of Geodesy and Cartography at Warsaw University of Technology. It contains the most important directions of research in the
Brzeziński Aleksander   +13 more
doaj   +1 more source

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