Results 261 to 270 of about 191,135 (314)
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2018 13th World Congress on Intelligent Control and Automation (WCICA), 2018
The ability of autonomous navigation is one of the key features supporting autonomous operation of the satellite constellation. Based on inter-satellite link ranging, the increase of direction observation can obtain the indirect measurements of orbital plane orientation parameters, which determine the absolute direction of the constellation in inertial
Wenbo Yang +3 more
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The ability of autonomous navigation is one of the key features supporting autonomous operation of the satellite constellation. Based on inter-satellite link ranging, the increase of direction observation can obtain the indirect measurements of orbital plane orientation parameters, which determine the absolute direction of the constellation in inertial
Wenbo Yang +3 more
openaire +1 more source
High-Dynamic Transmission Modeling for Laser Inter-Satellite Links (LISLs)
Asia Communications and Photonics conference and Exhibition, 2022Inter-satellite laser communication could achieve the large-capacity, high-reliability, and high-bit-rate transmission, but its terminal is also easily affected by the dynamic space environment.
Juan Yong +4 more
semanticscholar +1 more source
On-Demand Routing in LEO Mega-Constellations With Dynamic Laser Inter-Satellite Links
IEEE Transactions on Aerospace and Electronic SystemsLow-Earth-orbit (LEO) satellite mega-constellations are beginning to include laser inter-satellite links (LISLs) to extend the Internet to the most remote locations on Earth. Since the process of establishing these links incurs a setup delay on the order
Dhiraj Bhattacharjee +7 more
semanticscholar +1 more source
Enhancing LEO Mega-constellations with Inter-Satellite Links: Vision and Challenges
IEEE wireless communicationsLow earth orbit (LEO) satellites have been envisioned as a significant component of the sixth generation (6G) network architecture for achieving ubiquitous coverage and seamless access.
Chenyu Wu +5 more
semanticscholar +1 more source
, 2021
The paper presents results of precise orbit and Earth parameter determination based on full-scale simulations of a potential future GNSS, with the name of Kepler, recently proposed by the German Aerospace Center.
G. Michalak +3 more
semanticscholar +1 more source
The paper presents results of precise orbit and Earth parameter determination based on full-scale simulations of a potential future GNSS, with the name of Kepler, recently proposed by the German Aerospace Center.
G. Michalak +3 more
semanticscholar +1 more source
All-digital Compensation of Doppler Shift in LEO-LEO Optical Inter-satellite Links
Optica Advanced Photonics Congress 2022, 2022We evaluate the all-digital Doppler shift compensation in LEO-LEO coherent optical inter-satellite links. Doppler shift figures are assessed by the simulation of commercial orbits. The results indicate a two-stage compensation method as a viable solution.
T. C. Pita, I. P. Vieira, D. Mello
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The Study on RF Inter-Satellite Links
2011 7th International Conference on Wireless Communications, Networking and Mobile Computing, 2011This paper emphasizes on the transmission scheme to RF inter-satellite links(ISLs) between Geostationary Earth Orbit(GEO) satellites in term of practical application .Some important problems, such as frequency band selection, modulation type, multiple access , and links equation calculation are discussed in details .In this paper some suggestions and ...
Jinling Ma, Ruimin Lu
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Enhancing Reliability in LEO Satellite Networks via High-Speed Inter-Satellite Links
IEEE Wireless Communications LettersLow Earth orbit (LEO) satellites play a crucial role in providing global connectivity for non-terrestrial networks (NTNs) and supporting various Internet-of-Remote-Things (IoRT) applications.
Jinho Choi
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Integer Linear Programming Based Topology Design for GNSSs With Inter-Satellite Links
IEEE Wireless Communications Letters, 2021Inter-satellite links (ISLs) can be employed in global navigation satellite systems (GNSSs) for space-based telemetry, telecommand and ranging, which reduces the requirement for a large number of ground stations (GSs).
Zhibo Yan +7 more
semanticscholar +1 more source
Intelligent Memory Systems
This paper presents two V-band power amplifiers that are designed and fabricated using Fraunhofer IAF's 0.15-µm gate-length GaN/SiC HEMT technology. Both amplifiers, a unit PA and a balanced PA comprising two of the unit PAs, are four-stage designs that ...
C. Friesicke +8 more
semanticscholar +1 more source
This paper presents two V-band power amplifiers that are designed and fabricated using Fraunhofer IAF's 0.15-µm gate-length GaN/SiC HEMT technology. Both amplifiers, a unit PA and a balanced PA comprising two of the unit PAs, are four-stage designs that ...
C. Friesicke +8 more
semanticscholar +1 more source