Results 31 to 40 of about 17,557 (292)
Geodesy and Geodynamics, 2018 The 18th International Symposium on Geodynamics and Earth Tides 2016 covered phenomena that generate temporal variations in geodetic and geophysical observations. In calculating the stress field for Earth tides, the observed geodetic response is used for
Carla Braitenberg
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Requirements for Earth Rotation Parameters [PDF]
Highlights of Astronomy, 1986 AbstractObservations of Earth orientation parameters (polar motion and Universal Time) have reached a level of accuracy which challenges the definition of the reference systems which these observations seek to relate. Observational accuracies of better than in polar motion and in Universal Time are now routinely available.
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Research on Earth rotation and geodynamics in Poland in 2019–2022
Advances in Geodesy and Geoinformation, 2023 This paper summarizes the activity of the chosen Polish geodetic research teams in 2019–2022 in the fields of the Earth rotation and geodynamics. This publication has been prepared for the needs of the presentation of Polish scientists’ activities on the
Janusz Bogusz +3 more
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Kinematical Relativistic Corrections for Earth’s Rotation Parameters [PDF]
International Astronomical Union Colloquium, 2000 AbstractDynamical theories of the Earth’s rotation like SMART97 (Bretagnon et al., 1998) are to be considered in a DGRS (dynamically nonrotating geocentric reference system) (Brumberg et al., 1996). Such a theory gives the explicit expressions in terms of TCG (Geocentric Coordinate Time) of three Euler angles relating a DGRS to the ITRS (International ...
V.A. Brumberg, Pierre Bretagnon
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Yantu gongcheng xuebao, 2018 Considering the rotation of the principal stresses, new formulae for seismic active pressures on rigid retaining walls under rotation about top (RT mode) are derived by the pseudo-static method.
ZHANG Wen-ping 1, ZHOU Yi-tao 2, YU Jin 1,3, LIU Shi-yu 1, CAI Yan-yan 1,3, YU Chuang 4
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Assimilation of Earth rotation parameters into a global ocean model: excitation of polar motion [PDF]
Nonlinear Processes in Geophysics, 2011 The oceanic contribution to Earth rotation anomalies can be manifold. Possible causes are a change of total ocean mass, changes in current speed or location and changes in mass distribution.
J. Saynisch, M. Wenzel, J. Schröter
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Combination of VLBI Intensive Sessions with GNSS for generating Low latency Earth Rotation Parameters [PDF]
Advances in Geosciences, 2019 The Earth Orientation Parameters (EOPs) are published by the Earth Orientation Centre of the International Earth Rotation and Reference Systems Service (IERS). They are provided as the low-latency Bulletin A and the 30 d latency long-term EOP time
H. Hellmers +4 more
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Comparison of Different Estimates of the Accuracy of Forecasts of the Earth’s Rotation Parameters
Astronomy Reports, 2022 Improvement of the prediction accuracy of the Earth's rotation parameters (ERP) is one of the main problems of applied astrometry. In order to solve this problem, various approaches are used and in order to select the best one, comparison of the accuracy of the forecasts obtained by different methods at different analysis centers are often carried out.
Malkin, Z. M., Tissen, V. M.
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Implementation and Validation of Earth Acquisition Algorithm for Communication, Ocean and Meteorological Satellite [PDF]
Journal of Astronomy and Space Sciences, 2011 Earth acquisition is to solve when earth can be visible from satellite after Sun acquisition during launch and early operation period or on-station satellite anomaly.
Sang-wook Park +4 more
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A High-Precision Dual-Frequency Magnetic Induction Through-the-Earth Positioning Method
IEEE Access, 2021 To achieve the high-precision through-the-earth positioning in mine rescue, we propose a dual-frequency magnetic induction positioning method. The dual-frequency transmitter underground is a loop energized coil. The receiver on the ground is a three-axis
Wenlong Tian, Wei Yang, Xiaotao Shao
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