Results 31 to 40 of about 6,561 (302)
Nominal definition of satellite constellations under the Earth gravitational potential [PDF]
, 2020 This work focuses on the definition of satellite constellations whose secular relative distributions are invariant under the perturbation produced by the Earth gravitational potential.
Casanova, Daniel +3 more
core +1 more source
Novel virtual satellite formation scheme for deterministic transmission
Tongxin xuebao, 2023 Although satellite formation flying could effectively support deterministic transmission due to its stable formation, but its formation control required significant real-time computational overhead and did not support flexible deployment for multi ...
Chuan XU +4 more
doaj +2 more sources
GaliLEO: A Simulation Tool for LEO Satellite Constellations [PDF]
SIMULATION, 2002 The authors present GaliLEO, a simulator for the transmission of connection-oriented traffic over a constellation of LEO/MEO (low/medium earth orbit) satellites. Its scope is limited to the satellites and the stations accessing them, without any modelling of the terrestrial network, but inside this scope the goal is to study the performance of ...
Potorti' F., Franck L.
openaire +5 more sources
Autonomous Synchronization of Satellite Constellations via Optical Inter-Satellite Links
, 2023 In this paper we present an on-board clock steering scheme for achieving tight synchronization of constellations interconnected with optical inter-satellite links.
Dassie, Manuele +4 more
core +1 more source
Advanced Engineering Materials, EarlyView.This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira +4 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Disordered (Fe50Co50)1−xPtx thin films exhibit a pronounced anomalous Nernst effect (ANE) with a strong composition dependence on both rigid and flexible substrates. The transverse thermoelectric response peaks near 22.5 at.% Pt, accompanied by enhanced αxy/σxy scaling, thermal transport, and ANE sensitivity.
Mojtaba Mohammadi +2 more
wiley +1 more source
Multi-Criteria Ground Segment Dimensioning for Non-Geostationary Satellite Constellations [PDF]
, 2023 peer reviewedNon-Geostationary Orbit (NGSO) satellite constellations are becoming increasingly popular as an alternative to terrestrial networks to deliver ubiquitous broadband services.
ORTIZ GOMEZ, Flor de Guadalupe +4 more
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Handover Strategies for Emerging LEO, MEO, and HEO Satellite Networks
IEEE AccessSatellite networks are expected to support global connectivity via future 3GPP non-terrestrial networks (NTNs), as well as private non-geostationary satellite orbit (NGSO) constellations, e.g. OneWeb, SpaceX, and Amazon’s Kuiper.
Andra M. Voicu +2 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat +7 more
wiley +1 more source
Large Satellite Constellations and Their Potential Impact on VGOS Operations [PDF]
, 2023 Large LEO satellite constellations (or so-called Mega-constellations) will significantly change the view of the sky in some radio frequency bands. For VGOS telescopes it is important to understand the potential impact these constellations will have in ...
Di Vruno, Federico, Tornatore, Vincenza
core +1 more source