Results 11 to 20 of about 2,494,127 (194)

Assignment of hybrid laser and microwave inter-satellite links for navigation satellite systems [PDF]

open access: yesScientific Reports
A hybrid network comprising both laser and microwave inter-satellite links (ISLs) has been established within navigation satellite constellations. Leveraging the flexible construction of microwave links and the high ranging accuracy and communication ...
Nan Wang   +6 more
doaj   +3 more sources

A Cooperative Routing Scheme Using Inter-Satellite Links to Assist Data Downloading for LEO Satellite Networks [PDF]

open access: yesSensors, 2022
Low earth orbit (LEO) satellite networks can provide Internet service to users in areas where cellular networks are difficult to deploy. One critical function of satellites is to transfer data from satellite networks to ground core network through earth ...
Zijian Yang   +3 more
doaj   +2 more sources

The Availability of Space Service for Inter-Satellite Links in Navigation Constellations [PDF]

open access: yesSensors, 2016
Global navigation satellite systems (GNSS) are widely used in low Earth orbit (LEO) satellite navigation; however, their availability is poor for users in medium Earth orbits (MEO), and high Earth orbits (HEO).
Yinyin Tang, Yueke Wang, Jianyun Chen
doaj   +2 more sources

Unidirectional Orbit Determination for Extended Users Based on Navigation Ka-Band Inter-Satellite Links [PDF]

open access: yesSensors
Traditional spacecraft orbit determination primarily employs two methodologies: ground station/survey ship-based orbit determination and global navigation satellite system (GNSS)-based orbit determination.
Yong Shangguan   +6 more
doaj   +2 more sources

A Flexible Topology Control Strategy for Mega-Constellations via Inter-Satellite Links Based on Dynamic Link Optimization

open access: yesAerospace
In large-scale satellite constellations, the efficiency of inter-satellite communication is paramount. Traditional topology control strategies, such as the Manhattan configuration, provide stable links but can result in indirect communication paths ...
Yueyi Li   +5 more
doaj   +2 more sources

A Space-Based Autonomous Timekeeping Method Based on Onboard Atomic Clocks and Inter-Satellite Measurements [PDF]

open access: yesSensors
In global navigation satellite systems (GNSS), the system time reference is maintained by the ground control segment and kept traceable to UTC, enabling inter-system compatibility and interoperability. Advances in onboard atomic-clock stability and inter-
Guangyao Chen   +4 more
doaj   +2 more sources

RF-Assisted Uncertainty Cone Reduction in Free-Space Optical Inter-Satellite Links

open access: yesIEEE Open Journal of the Communications Society
One of the space communications industry’s current focuses is developing high-throughput communication terminals for satellite-to-satellite communication links.
Elena Fernandez-Nino   +3 more
doaj   +2 more sources

Solar Irradiance Mitigation in LEO Optical Inter-Satellite Links via Inter-Shell Based Path Optimization

open access: yesApplied Sciences
Solar irradiance is a critical factor influencing the reliability of optical inter-satellite links (O-ISLs). Despite its significance, limited research has focused on addressing this challenge.
Jae Seong Hwang   +2 more
doaj   +2 more sources

Autonomous Synchronization of Satellite Constellations via Optical Inter-Satellite Links

open access: yes, 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

A delay model for satellite constellation networks with inter-satellite links [PDF]

open access: yes, 2009
Within this paper we examine a non-geostationary satellite constellation network with inter-satellite links (ISLs) for global air traffic control (ATC) and air passenger communication (APC).
Romain Hermenier   +5 more
core   +1 more source

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