Results 11 to 20 of about 591,139 (353)
Exchange Interaction in Binuclear Complexes with Rare Earth and Copper Ions: A Many-Body Model Study [PDF]
, 2001 We have used a many-body model Hamiltonian to study the nature of the magnetic ground state of hetero-binuclear complexes involving rare-earth and copper ions. We have taken into account all diagonal repulsions involving the rare-earth 4f and 5d orbitals and the copper 3d orbital.
A. Bencini +27 more
arxiv +4 more sources
Space Debris In-Orbit Detection with Commercial Automotive LiDAR Sensors [PDF]
SensorsThis article presents an alternative approach to detecting and mapping space debris in low Earth orbit by utilizing commercially available automotive LiDAR sensors mounted on CubeSats.
Isabel Lopez-Calle
doaj +2 more sources
Space Occupancy in Low-Earth Orbit [PDF]
Journal of Guidance, Control, and Dynamics, 2021 With the upcoming launch of large constellations of satellites in the low-Earth orbit (LEO) region it will become important to organize the physical space occupied by the different operating satellites in order to minimize critical conjunctions and avoid collisions.
Claudio Bombardelli +3 more
openaire +6 more sources
Orbit Design and Trajectory Analysis of satellite in Low Earth Orbit [PDF]
INCAS Bulletin, 2021 An Attitude control system for a satellite in low earth orbit is designed in this project. As a reference, CARTOSAT-2 is selected to design the AOCS. CARTOSAT-2 is located in LEO so it suits the needs of the projects.
M. RAJA +4 more
doaj +1 more source
Balanced Low Earth Satellite Orbits [PDF]
Advances in Astronomy, 2020 The present work aims at constructing an atlas of the balanced Earth satellite orbits with respect to the secular and long periodic effects of Earth oblateness with the harmonics of the geopotential retained up to the 4th zonal harmonic. The variations of the elements are averaged over the fast and medium angles, thus retaining only the secular and ...
A. Mostafa, M. H. El Dewaik
openaire +3 more sources
Efficient Modulation Classification Based on Complementary Folding Algorithm in UVLC System
IEEE Photonics Journal, 2022 Modulation classification (MC) has become a widely used technology, which is of great value in both commercial and civil applications. It actually completes the classification task of modulation signal through various means.
Chi Xu, Ruizhe Jin, Wendi Gao, Nan Chi
doaj +1 more source
System modelling of very low Earth orbit satellites for Earth observation [PDF]
Acta Astronautica, 2021 23 pages, 6 figures, Accepted for publication in Acta Astronautica (2021-07-03)
Crisp, N.H. +10 more
openaire +7 more sources
The benefits of very low earth orbit for earth observation missions [PDF]
Progress in Aerospace Sciences, 2020 23 pages, 19 figures. Accepted for publication in Progress in Aerospace Sciences (24-04-2020)
J. S. Perez +32 more
openaire +9 more sources
A frequency portrait of Low Earth Orbits [PDF]
Celestial Mechanics and Dynamical Astronomy, 2019 30 pages, 31 ...
Giulia Schettino +4 more
openaire +4 more sources
Formation-flying interferometry in geocentric orbits [PDF]
Astronomy & Astrophysics, 682, A38, February 2024, 2023 Spacecraft formation flying serves as a method of astronomical instrumentation that enables the construction of large virtual structures in space. The formation-flying interferometry generally requires very-high control accuracy, and beyond-Earth orbits are typically selected.
arxiv +1 more source