Results 231 to 240 of about 56,614 (262)

Hybrid Configurations for Satellite Constellations

1998
Orbital configuration design for satellite constellations is currently based on strongly regular models, as they make easier the coverage analysis. This paper deals with the widening of these symmetry constraints, leading to the so-called hybrid configurations.
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Small Satellites and Large Commercial Satellite Constellations

2017
Evolution, current status, and key future trends involving small satellites and development of commercial small satellite constellations; Examination of the extent to which small satellites and especially commercial small satellite constellations represent a “disruptive technology” that will impact satellite manufacturers and service ...
Ram S. Jakhu, Joseph N. Pelton
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Availability analysis of satellite constellation

2009 8th International Conference on Reliability, Maintainability and Safety, 2009
This paper firstly analyzes the concept of availability of satellite constellation. Then the method of constellation availability analysis is proposed on the basis of Markov chain model, outage analysis, as well as MTBF and MTTR of satellite constellations. Finally, an illustrative example is presented to validate the method.
Heng Zheng, Liming Ren
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Satellite selection for multi-constellation

2008 IEEE/ION Position, Location and Navigation Symposium, 2008
There will be 70~90 navigation satellites operating at the same time when Glonass and Galileo reach full operation capability. As a result, the number of visible satellites can reach 30. Thus the positioning accuracy will be improved greatly. However, so many satellite measurements may burden the receiverpsilas processing element when to use them to ...
null Zhang Miaoyan, null Zhang Jun, null Qin Yong   +2 more
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Satellite Network Constellation Design

2014
Satellite constellation design plays an important role in satellite network robust QoS routing technology. Although robust QoS routing technology should not depend on constellation design, constellation design can affect the system cost, the effective communications of the entire network, and the effective and convenient management of the satellite ...
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MPLS-Based Satellite Constellation Networks

IEEE Journal on Selected Areas in Communications, 2004
Nongeostationary satellite constellations with intersatellite links are a challenge for networking due to their continuously changing topology. In order to make maximal use of the network's capacities, special attention has to be paid to routing and traffic engineering.
Donner, A., Berioli, M., Werner, M.
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Optical Navigation Satellite Constellation Design

Advanced Materials Research, 2012
Satellite constellation has incomparable superiority compared to the single satellite, and can provide effective global intermittent or continuous coverage. This paper designs a laser navigation satellite constellation by simulating the coverage properties of single satellite.
Jun Ao, Yi Wu, Chun Bo Ma
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Les constellations de satellites

2018
22 ZREE N°1/2018 frequences localement. L’utilisation de la blockchain devrait permettre d’assurer que les frequences utilisees ne soient ni brouillees ni occupees par un autre acteur. Chaque ac- teur pourrait ainsi acceder aux frequences qui lui sont ne- cessaires ou les liberer.
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LEO satellite constellation performance analysis

Proceedings of MILCOM '93 - IEEE Military Communications Conference, 2002
To date, radio frequency crosslinks have been the preferred communication medium for low Earth orbit (LEO) satellite networks. However, laser crosslinks in satellite constellations introduce many new and interesting research problems not addressed in these conventional methods.
C. Ward, T. Phillips, T. Chang, A. Khan, P.R. Acuff   +4 more
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Uniform Satellite Constellation Reconfiguration

Journal of Guidance, Control, and Dynamics, 2022
David Arnas, Richard Linares
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