Results 61 to 70 of about 115,982 (303)

Rethinking Indonesia’s future at low earth orbit [PDF]

, 2022
Outer space activities that were originally carried out during the Cold War era for ideological purposes have now turned into a competition for commercial benefits.
Putro, Yaries Mahardika, Nugraha, Ridha Aditya   +1 more
core  

Demonstration of aerodynamic control manoeuvres in very low earth orbit using SOAR (Satellite for Orbital Aerodynamics Research) [PDF]

, 2019
Aerodynamic forces have often been proposedas a possible means to perform a variety of different attitude and orbit control manoeuvres in very low Earth orbits including pointing control, constellation and formation management, and re-entry interface ...
Rodríguez Donaire, Silvia, Roberts, Peter C.E, Livadiotti, Sabrina, Sureda Anfres, Miquel, García-Almiñana, Daniel, Crisp, Nicholas H.   +5 more
core   +2 more sources

Fuel Optimization for Low Earth Orbit Maintenance [PDF]

Journal of Astronomy and Space Sciences, 2008
The resolution of Earth images taken from a satellite has close relation with satellite's altitude. If a satellite has lower altitude, it gets a picture having better resolution.
Yong Jae Park, Sang-Young Park, Young-Rok Kim, Kyu-Hong Choi   +3 more
doaj   +1 more source

Orbital Geometry‐Governed Response of Pressure‐Tunable Quantum Defects in hBN

Advanced Functional Materials, EarlyView.
Defects in hBN act as ultrasensitive quantum manometers when the energy of the intradefect optical transitions is modified by lattice compression. The orbital geometry of the electron wave functions governs how electron hopping and Coulomb interactions react uniquely to the reduction of the van der Waals gap and in‐plane compression, leading to robust ...
Magdalena Grzeszczyk, Danis I. Badrtdinov, Kenji Watanabe, Takashi Taniguchi, Cyrus E. Dreyer, Malte Rösner, Maciej Koperski   +6 more
wiley   +1 more source

Satellite mega-constellations create risks in Low Earth Orbit, the atmosphere and on Earth

Scientific Reports, 2021
The rapid development of mega-constellations risks multiple tragedies of the commons, including tragedies to ground-based astronomy, Earth orbit, and Earth’s upper atmosphere.
Aaron C. Boley, Michael Byers
doaj   +1 more source

Implementation of A Low-Earth Orbit Satellite Chirped Preamble Detector

IEEE Transactions on Aerospace and Electronic Systems
The Internet of Things (IoT) has undergone a significant transformation with the introduction of low-Earth orbit (LEO) satellites as gateways. This transformation fulfills a long-standing promise of IoT, which is to enable the connectivity of objects regardless of their geographical location on Earth.
Matthieu Magnant, Bertrand Le Gal, Guillaume Ferré, Florian Collard   +3 more
openaire   +2 more sources

Integrated Field‐Free SOT Domain‐Wall Synapses and MTJ Stochastic Neurons for Hardware Boltzmann Machines

Advanced Functional Materials, EarlyView.
Field‐free spin‐orbit torque domain‐wall synapses integrated with stochastic MTJ neurons enable compact hardware Boltzmann machines. Leveraging intrinsic stochasticity and multi‐level conductance, the system achieves efficient probabilistic learning with high accuracy, demonstrating a scalable spintronic platform for energy‐efficient edge AI.
Aijaz H. Lone, Meng Tang, Camelia Florica, Bin He, Jingkai Xu, Selma Amara, Georgian Melinte, Xixiang Zhang, Gianluca Setti   +8 more
wiley   +1 more source

Extension of the Molniya orbit using low-thrust propulsion [PDF]

, 2011
Extension of the standard Molniya orbit using low-thrust propulsion is presented. These newly proposed, highly elliptical orbits are enabled by existing low-thrust propulsion technology, enabling new Earth Observation science and offering a new set of ...
Macdonald, Malcolm, Anderson, Pamela
core  

Semi-analytical solution for the optimal low-thrust deflection of near-Earth objects [PDF]

, 2009
This paper presents a semi-analytical solution of the asteroid deviation problem when a low-thrust action, inversely proportional to the square of the distance from the sun, is applied to the asteroid.
Vasile, M., Colombo, Camilla, Vasile, Massimiliano, Radice, G., Colombo, C., Radice, Gianmarco   +5 more
core   +1 more source

Advances in Receiver and Detection Systems for Low Earth Orbit Nanosatellite Quantum Communications

IEEE Access
Satellite quantum communications have received a surge of interest in recent years, encouraged by the success of the QUESS experiments and as a reaction to advances in quantum computing.
James J. Shawe, Jerry Horgan, Deirdre Kilbane   +2 more
doaj   +1 more source