Results 1 to 10 of about 2,208 (162)
Tropospheric Attenuation in GeoSurf Satellite Constellations [PDF]
Remote Sensing, 2021 In GeoSurf satellite constellations, any transmitter/receiver, wherever it is located, is linked to a satellite with zenith paths. We have studied the tropospheric attenuation predicted for some reference sites (Canberra, Holmdel, Pasadena, Robledo, and ...
Emilio Matricciani +2 more
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Optimization of Reconfigurable Satellite Constellations Using Simulated Annealing and Genetic Algorithm [PDF]
Sensors, 2019 Agile Earth observation can be achieved with responsiveness in satellite launches, sensor pointing, or orbit reconfiguration. This study presents a framework for designing reconfigurable satellite constellations capable of both regular Earth observation ...
Sung Wook Paek +2 more
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LEO Small-Satellite Constellations for 5G and Beyond-5G Communications
IEEE Access, 2020 The next frontier towards truly ubiquitous connectivity is the use of Low Earth Orbit (LEO) small-satellite constellations to support 5G and Beyond-5G (B5G) networks. Besides enhanced mobile broadband (eMBB) and massive machine-type communications (mMTC),
Israel Leyva-Mayorga +2 more
exaly +3 more sources
Federated Learning in Satellite Constellations
IEEE NetworkFederated learning (FL) has recently emerged as a distributed machine learning paradigm for systems with limited and intermittent connectivity. This paper presents the new context brought to FL by satellite constellations, where the connectivity patterns are significantly different from the ones observed in conventional terrestrial FL.
Bho Matthiesen +2 more
exaly +4 more sources
Statistical Study of Satellite Constellations and the Cubesat Role [PDF]
علوم، فناوری و کاربردهای فضایی, 2023 Satellite Constellations are the new approach to achieve the capabilities that were previously expected from large and complex satellites. This paper reviews activities and related satellite constellation of about 130 companies and research institutes in
Ehsan Mousivand +3 more
doaj +1 more source
LEO Mega-Constellations for 6G Global Coverage: Challenges and Opportunities
IEEE Access, 2021 Mega-constellations have the potential for providing 6G Internet owing to the unique advantage of global coverage. However, current satellite technologies are not omnipotent.
Haoran Xie +3 more
doaj +1 more source
Remote Sensing, 2022 The Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow-On (GRACE-FO) provided twenty years of data on Earth’s time-varying gravity field.
Carlos M. A. Deccia +2 more
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Geo-spatial Information Science, 2022 With the undergoing and planned implementations of mega constellations of thousands of Low Earth Orbiting (LEO) satellites, space will become even more congested for satellite operations.
Yan Zhang +3 more
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Legal Aspects of Satellite Constellations [PDF]
Air and Space Law, 2020 In recent years a few entrepreneurs proposed launching into space large fleets of satellites, consisting of hundreds of satellites, often referred to as ‘constellations’. Their role is to provide satellite services to the largest possible number of users on Earth.
openaire +1 more source
ns-3-leo: Evaluation Tool for Satellite Swarm Communication Protocols
IEEE Access, 2022 We present ns-3-leo, a module for the discrete event network simulator ns-3, which includes models for the network mobility and link characteristics of Low Earth Orbit (LEO) satellite mega-constellations.
Tim Schubert, Lars Wolf, Ulf Kulau
doaj +1 more source