Results 81 to 90 of about 9,096,663 (166)

On the role of satellite communications for emergency situations with a focus on Europe [PDF]

, 2011
International audienceIn this paper, we describe how satellite communications may contribute to disaster management. During emergency situations, satellite communications present many advantages in supporting or replacing a terrestrial infrastructure (if
Matteo Berioli, Laurent Thomasson, Berioli, Matteo, Franck, Laurent, Rosalba Suffritti, Boutry, Philippe, Luca Simone Ronga, Suffritti, Rosalba, Thomasson, Laurent, Guy Harles, Ronga, Luca Simone, Laurent Franck, Philippe Boutry, Harles, Guy, Luca Simone, Ronga   +14 more
core   +1 more source

The influence of natural factors on the spatial distribution of aufeis in Ulaanbaatar, Mongolia

Frontiers in Earth Science
Aufeis is a common phenomenon in the Northern Hemisphere and continues to pose a recurring challenge to settlement areas and urban infrastructure in Ulaanbaatar, Mongolia, during winter. Although it occurs annually, the processes and natural factors that
Ganbold Ulambayar, Ganbold Ulambayar, Tatsuya Watanabe, Avirmed Dashtseren, Avirmed Dashtseren, Dai Nakamura, Yamkhin Jambaljav, Ganbold Byambabayar, Khurelbaatar Temuujin, Gansukh Tsogt-Erdene, Dagvadorj Otgonjargal   +10 more
doaj   +1 more source

Autonomous Formation Flying at DLR's German Space Operations Center (GSOC) [PDF]

, 2007
In the upcoming years, significant changes in the profile of satellite missions are expected as scientists and managers want to benefit from multi-satellite missions.
Gill, Eberhard, Rupp, Thomas, D'Amico, Simone, Montenbruck, Oliver   +3 more
core  

Autonomous satellite constellation for enhanced Earth coverage using coupled selection equations [PDF]

, 2013
This paper presents a novel solution to the problem of autonomous task allocation for a self-organising constellation of small satellites in Earth orbit.
Colombo, Camilla, Mingotti, Giorgio, McInnes, Colin, Mushet, Garrie   +3 more
core   +3 more sources

Substantiation of land reclamation technology in the Zaporizhzhia region degraded due to military actions using remote monitoring [PDF]

E3S Web of Conferences
This study provides a scientific and methodological basis for rehabilitating war-degraded land in the Zaporizhzhia region. The strategy integrates multispectral and radar satellite monitoring (Sentinel-1, Sentinel-2), GIS modeling, and adaptive ...
Mironov Igor, Kolesnik Valerii, Buchavyi Yuriy   +2 more
doaj   +1 more source

Spaceborne Autonomous and Ground Based Relative Orbit Control for the TerraSAR-X/TanDEM-X Formation [PDF]

, 2007
TerraSAR-X (TSX) and TanDEM-X (TDX) are two advanced synthetic aperture radar (SAR) satellites flying in formation. SAR interferometry allows a high resolution imaging of the Earth by processing SAR images obtained from two slightly different orbits. TSX
Gill, Eberhard, Ardaens, J. S., Kazeminejad, Bobby, Montenbruck, O., Ardaens, Jean-Sebastien, D'Amico, Simone, Montenbruck, Oliver, D'Amico, S., Gill, E., Kazeminejad, B.   +9 more
core  

Mega antenna formation of satellite arrays

, 2023
Recently, distributed antenna technology based on formation of arrays (FoA) has been proposed in the framework of non-terrestrial network (NTN) integration to provide 5G-like mobile satellite services.
Elena Sebastiani, Piero Angeletti, Marco Luise, Riccardo de Gaudenzi, Giacomo Bacci, Luca Sanguinetti   +5 more
core  

Lopsided and Bulging Distribution of Satellites Around Paired Halos. I. Observational Measurements and Comparison with Halo-based Models

The Astrophysical Journal
We investigate the angular distribution of satellite galaxies in and around pairs of galaxy groups in the Sloan Digital Sky Survey (SDSS) and compare the results with the satellite distribution in pairs of dark matter halos by constructing mock catalogs ...
Yanhan Guo, Qinglin Ma, Cheng Li
doaj   +1 more source

Not just gas: How solids-driven torques shaped the migration of the Galilean moons

Astronomy & Astrophysics
Context. A crucial aspect of formation models for the Galilean moons of Jupiter is that the objects survive rapid inward orbital migration. Aims. The primary aim of this study is to investigate the orbital migration of the Galilean moons by incorporating
Gonzalez-Rivas L., Krapp L., Ramos X., Benitez-Llambay P.   +3 more
doaj   +1 more source

Solving the first-kind Convolution Type Volterra Integro-Differential Equation using the Modified Natural Transform

مجلة جامعة دمشق للعلوم الأساسية
These equations arise in scenarios like glass formation processes, diffusion problems, radiation transfer, cell growth, and satellite motion description.
Khalil Hasan Yahya
doaj