Results 11 to 20 of about 150,869 (288)

High-speed inter-satellite link construction technology for navigation constellation oriented to engineering practice

open access: yesOpen Astronomy, 2022
This article presents a study on the design of high-speed inter-satellite links for the global navigation satellite system, which consists of 24 middle earth orbit, 3 inclined geosynchronous orbit, 3 geostationary orbit satellites, and 4 typical ground ...
Liu Canyou   +5 more
doaj   +1 more source

Performance Analysis of DPSK Optical Communication for LEO-to-Ground Relay Link Via a GEO Satellite

open access: yesJournal of Astronomy and Space Sciences, 2020
Satellite optical communication has gained significant attention owing to its many quality features (e.g., a larger bandwidth, license free spectrum, higher data rate, and better security) compared to satellite microwave communication.
Hyung-Chul Lim   +5 more
doaj   +1 more source

Continuous-Variable Quantum Secret Sharing Based on Thermal Terahertz Sources in Inter-Satellite Wireless Links

open access: yesEntropy, 2021
We propose a continuous-variable quantum secret sharing (CVQSS) scheme based on thermal terahertz (THz) sources in inter-satellite wireless links (THz-CVQSS).
Chengji Liu   +5 more
doaj   +1 more source

Optimization of intersatellite routing for real-time data download [PDF]

open access: yes, 2018
The objective of this study is to develop a strategy to maximise the available bandwidth to Earth of a satellite constellation through inter-satellite links.
Ceriotti, Matteo, Yarr, Neil
core   +1 more source

Precoding in multigateway multibeam satellite systems [PDF]

open access: yes, 2016
This paper considers a multigateway multibeam satellite system with multiple feeds per beam. In these systems, each gateway serves a set of beams (cluster) so that the overall data traffic is generated at different geographical areas.
Joroughi, Vahid   +2 more
core   +3 more sources

Fully Autonomous Orbit Determination and Synchronization for Satellite Navigation and Communication Systems in Halo Orbits

open access: yesRemote Sensing, 2023
This paper presents a solution for autonomous orbit determination and time synchronization of spacecraft in Halo orbits around Lagrange points using inter-satellite links.
Gheorghe Sirbu, Mauro Leonardi
doaj   +1 more source

Logical topology-based routing in LEO constellations [PDF]

open access: yes, 2001
Satellite communication is distinguished by global coverage and the ability to support a wide range of applications. LEO (Low Earth Orbit) satellite systems employing inter-satellite links offer rich connectivity in space and provide direct broadband ...
Hu, Y, Li, VOK
core   +1 more source

Analytical design and performance analysis of LEO mega chain satellite constellation

open access: yesXibei Gongye Daxue Xuebao, 2022
With the development of microsatellite technology and the growth of ground reconnaissance demand, the rapid design of a LEO constellation with minimum satellite number, low revisit time (within 10 minutes), and permanent inter-satellite links has become ...
ZHENG Pengfei, CHEN Hongyu, GUO Chongbin
doaj   +1 more source

"Internet from Space" without Inter-satellite Links

open access: yesProceedings of the 19th ACM Workshop on Hot Topics in Networks, 2020
Buoyed by advances in space technology, several firms are planning satellite constellations to offer broadband Internet service. While these developments are happening quickly, there are also many uncertainties about the design of these networks. A key open question is whether or not they will incorporate direct connectivity between satellites, instead
Hauri, Yannick   +3 more
openaire   +2 more sources

Survey of Inter-satellite Communication for Small Satellite Systems: Physical Layer to Network Layer View [PDF]

open access: yes, 2016
Small satellite systems enable whole new class of missions for navigation, communications, remote sensing and scientific research for both civilian and military purposes.
Afghah, Fatemeh   +5 more
core   +3 more sources

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