Results 81 to 90 of about 733,426 (347)

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

, 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., Hawthorne, Jessica C., Simons, Frederik J.   +2 more
core   +1 more source

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

, 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, Di Rita, Martina, Nascetti, Andrea   +2 more
core   +1 more source

Satellite geodesy on the lawn

Eos, Transactions American Geophysical Union, 1987
During the 1986 AGU Fall Meeting in December, four Global Positioning System (GPS) receivers were demonstrated in a simulated field condition. Although billed as a “shootout,” constraints of time and location dictated that this demonstration would not be a valid test of the receivers, and in retrospect, it should not be viewed as such.
openaire   +2 more sources

Reference Tracking and Disturbance Rejection for Nonlinear Systems Using LPV Control

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT The Linear Parameter‐Varying (LPV) framework has been introduced with the intention to provide stability and performance guarantees for analysis and controller synthesis for Nonlinear (NL) systems through convex methods. By extending results of the Linear Time‐Invariant framework, mainly based on quadratic stability and performance using ...
Patrick J. W. Koelewijn, Roland Tóth, Henk Nijmeijer, Siep Weiland   +3 more
wiley   +1 more source

A Framework to Enable Eco‐Cyber‐Physical Systems for Robotics‐Focused Digital Twins in Smart Farming

Journal of Field Robotics, EarlyView.
ABSTRACT This paper introduces the R‐ECPS (Robotics‐focused Eco‐Cyber‐Physical System) framework for the development of robotics‐enabled digital twins, integrating human knowledge into the decision‐making process. Our framework adapts ECPS and Digital Twin (DT) definitions to agricultural field robotics.
Fiorella Sibona, Nicholas Harrison, Nathan Wallace, Conrad Stevens, Salah Sukkarieh, David Raubenheimer, Stephen J. Simpson, Luciano A. González   +7 more
wiley   +1 more source

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

Учёные 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  

Alpine greening deciphered by forest stand and structure dynamics in advancing treelines of the southwestern European Alps

Remote Sensing in Ecology and Conservation, EarlyView.
Multidecadal satellite observations, like those from Landsat, enable the study of vegetation greenness trends at extensive spatial and temporal scales. Alpine ecosystems show significant increases in vegetation greenness, but the ecological processes driving this greening are less understood.
Arthur Bayle, Baptiste Nicoud, Jérôme Mansons, Loïc Francon, Christophe Corona, Philippe Choler   +5 more
wiley   +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
doaj   +1 more source

Predicting the breeding distribution of wader species across climatic and environmental gradients

Wildlife Biology, EarlyView.
Developing and applying species distribution models is particularly urgent for species currently facing high levels of environmental change. Waders (Charadrii) are among the most species‐rich groups of birds breeding at higher latitudes and the one where species are declining fastest. Iceland holds a large part of the global population of several wader
Verónica Méndez, Guðmundur A. Guðmundsson, Kristinn H. Skarphéðinsson, Borgný Katrínardóttir, Svenja Auhage, Böðvar Þórisson, Aðalsteinn Ö. Snæþórsson, Yann Kolbeinsson, Þorkell L. Þórarinsson, Halldór W. Stefánsson, Hálfdán H. Helgason, Rán Þórarinsdóttir, Skarphéðinn G. Þórisson, Cristian Gallo, José A. Alves, Tómas G. Gunnarsson   +15 more
wiley   +1 more source

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

, 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, Capitaine, Nicole, Dehant, Véronique, Gross, Richard, Huang, Chengli, Malkin, Zinovy, McCarthy, Dennis, Schuh, Harald, Vondrák, Jan, Yatskiv, Yaroslav   +9 more
core   +1 more source