Results 81 to 90 of about 757,045 (352)

Different approaches in GLONASS orbit computation from broadcast ephemeris [PDF]

open access: yesGeodetski Vestnik, 2016
Several types of methods can solve equations of satellite motion numerically. These methods are divided into single and multi-step methods. The accuracy of each method depends directly on adopted integration step size between successive iterations.
Kamil Maciuk
doaj   +1 more source

INVESTIGATION OF THE LITHOSPHERIC PLATE BOUNDARY ZONE WITHIN SAKHALIN ISLAND BASED ON SATELLITE GEODESY DATA [PDF]

open access: bronze, 2023
Mariya Gridchina   +99 more
openalex   +1 more source

On the eve of the 100th anniversary of IAU Commission 19/A2 “Rotation of the Earth” [PDF]

open access: yes, 2018
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence
Brzeziński, Aleksander   +9 more
core   +1 more source

Hydrogravimetry Enables Quantification of Alpine Groundwater Dynamics

open access: yesGeophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Groundwater plays a critical role in the functioning of alpine hydrological systems, and its importance is expected to increase under climate change. However, quantification of groundwater processes in these systems remains highly uncertain. Terrestrial time‐lapse gravimetry (TLG) is a geophysical and geodetic technique whose measured variable
Landon J. S. Halloran   +4 more
wiley   +1 more source

Comparison and Accuracy Estimation of Modern Models of the Earth’s Gravitational Potential [PDF]

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2016
The paper presents a brief overview of new models of the Earth’s gravitational potential constructed based on satellite-to-satellite tracking, satellite gradiometry, satellite altimetry, as well as ground gravimetric and satellite laser ranging. Inherent
I.O. Novlyanskaya
doaj  

Satellite geodesy: Methods

open access: yesEos, Transactions American Geophysical Union, 1971
General Theory. Analytic solutions for the motion of a near‐earth satellite are of practical importance for orbit prediction and establishment of reference orbits I (intermediaries) for minimizing perturbations from which the geodetic information is extracted.
openaire   +1 more source

Efficient analysis and representation of geophysical processes using localized spherical basis functions

open access: yes, 2009
While many geological and geophysical processes such as the melting of icecaps, the magnetic expression of bodies emplaced in the Earth's crust, or the surface displacement remaining after large earthquakes are spatially localized, many of these ...
Beggan, Ciaran D.   +2 more
core   +1 more source

How Far Are Two Symmetric Matrices From Commuting? With an Application to Object Characterisation and Identification in Metal Detection

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 3, Page 1914-1942, February 2026.
ABSTRACT Examining the extent to which measurements of rotation matrices are close to each other is challenging due measurement noise. To overcome this, data is typically smoothed, and the Riemannian and Euclidean metrics are applied. However, if rotation matrices are not directly measured and are instead formed by eigenvectors of measured symmetric ...
P. D. Ledger   +2 more
wiley   +1 more source

FOSS4G date assessment on the isprs optical stereo satellite data. A benchmark for DSM generation [PDF]

open access: yes, 2017
The ISPRS Working Group 4 Commission I on "Geometric and Radiometric Modelling of Optical Spaceborne Sensors", provides a benchmark dataset with several stereo data sets from space borne stereo sensors.
Crespi, Mattia   +2 more
core   +1 more source

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