Results 51 to 60 of about 26,941 (300)
Integer-ambiguity resolution in astronomy and geodesy
, 2013 Recent theoretical developments in astronomical aperture synthesis have revealed the existence of integer-ambiguity problems. Those problems, which appear in the self-calibration procedures of radio imaging, have been shown to be similar to the nearest ...
Lannes, André, Prieur, Jean-Louis
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Upgrade of foss date plug-in: Implementation of a new radargrammetric DSM generation capability [PDF]
, 2016 Synthetic Aperture Radar (SAR) satellite systems may give important contribution in terms of Digital Surface Models (DSMs) generation considering their complete independence from logistic constraints on the ground and weather conditions. In recent years,
Crespi, Mattia Giovanni +3 more
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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
Space-Time Reference with an Optical Link
, 2015 We describe a method for realizing a high-performance Space-Time Reference (STR) using a stable atomic clock in a precisely defined orbit and synchronizing the orbiting clock to high-accuracy atomic clocks on the ground.
Berceau, Paul +3 more
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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
Participation of Employees and Students of the Faculty of Geodesy and Cartography in Polar Research
Reports on Geodesy and Geoinformatics, 2016 This year the Faculty of Geodesy and Cartography, Warsaw University of Technology celebrates its 95th jubilee, which provides an opportunity to present the Faculty’s rich traditions in polar research.
Pasik Mariusz +7 more
doaj +1 more source
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
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Insect Conservation and Diversity, EarlyView.Burrows of the threatened Gibson's Big Sand Tiger Beetle in riverine dune habitats are susceptible to flooding through managed flows. HEC‐RAS modelling identified the flow thresholds above which flooding would occur for burrows and affect the beetle larvae. These findings provide instream flow guidelines for conserving this threatened species and guide
Iain D. Phillips +2 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