Results 51 to 60 of about 2,043 (261)
High Voltage, EarlyView.ABSTRACT Power lines in synthetic‐aperture radar (SAR) images are reflected as point signatures, which fluctuate annually in both the azimuth and range directions. A novel framework is proposed in this paper to evaluate the four‐dimensional dynamic status of power line sag using those point signatures in time‐series SAR images.
Sijie Ma +4 more
wiley +1 more source
GNSS seminar 2017 at the Institute of Geodesy in Brno, Brussels, 6 June 2017
Kartografija i Geoinformacije, 2017 The 20th edition of the seminar Satellite methods in geodesy and cadastre – GNSS seminar 2017 was organized by the Institute of Geodesy of the Faculty of Civil Engineering, Brno University of Technology and held on February 2nd 2017.
Danijel Šugar, Miljenko Lapaine
doaj
Different approaches in GLONASS orbit computation from broadcast ephemeris [PDF]
Geodetski 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
Eos, Transactions American Geophysical Union, 1971 Since the last Quadrennial Report in 1967, progress in satellite geodesy has been confined to refining the results as of 1967 by adding data of greater accuracy and better distribution and to combining the various solutions. None of the avant‐garde methods, such as satellite, altimetry, very long base line interferometry (VLBI), drag‐free satellites ...
openaire +1 more source
Archaeometry, EarlyView.ABSTRACT The discovery of archaeological sites traditionally entails the utilisation of physically demanding exploration methodologies, including terrain surveying and the analysis of historical records. Recent technological developments have led to an increased use of non‐invasive remote sensing techniques, including Google Earth, LiDAR and aerial ...
Mncedisi J. Siteleki
wiley +1 more source
Satellite orbit determination using satellite gravity gradiometry observations in GOCE mission perspective [PDF]
Advances in Geosciences, 2003 Between the years 2004 and 2005 the launch of the first gradiometric satellite is planned. This satellite will be an important element of the Gravity Field and Steady – State Ocean Circulation Explorer Mission (GOCE).
A. Bobojć, A. Drożyner
doaj
Experimental Physiology, EarlyView.Abstract Long‐duration spaceflight represents an extreme challenge, triggering adaptive responses including spaceflight‐associated neuro‐ocular syndrome, characterized by diminished visual acuity and ocular changes, which is a significant health risk for Mars missions.
Ge Tang +19 more
wiley +1 more source
Terrestrial, Atmospheric and Oceanic Sciences, 2013 This special issue publishes papers on recent results in geophysical and climate change studies over Tibet, Xinjiang and Siberia (TibXS) based upon some of the key sensors used in satellite geodesy, including satellite gravimetric sensors (GRACE and GOCE)
Cheinway Hwang +3 more
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Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)
Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki +5 more
wiley +1 more source
Context‐free graphs and their transition groups
Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.Abstract Starting from context‐free inverse graphs, we introduce a new class of groups and study their structural properties. We establish closure properties, show that their coword problems are context‐free, analyze torsion elements, and realize them as subgroups of the asynchronous rational group.
Daniele D'Angeli +3 more
wiley +1 more source