Results 11 to 20 of about 37,809 (196)

Distributed Orbit Determination for Global Navigation Satellite System with Inter-Satellite Link [PDF]

open access: yesSensors, 2019
To keep the global navigation satellite system functional during extreme conditions, it is a trend to employ autonomous navigation technology with inter-satellite link.
Yuanlan Wen   +4 more
doaj   +3 more sources

Test Method for Single Satellite’s Inter-Satellite Link Pointing and Tracking via Ground Station

open access: yesAerospace
An inter-satellite link is a key technology that improves control accuracy, transmission efficiency, and autonomous capability of constellations. A satellite’s pointing and tracking abilities mainly determine the inter-satellite link’s performance, which
Zhenqiang Hong   +5 more
doaj   +4 more sources

Acquisition Time in Laser Inter-Satellite Link Under Satellite Vibrations [PDF]

open access: yesIEEE Photonics Journal, 2023
Pointing, acquisition, and tracking (PAT) is a major technical challenge of laser inter-satellite links (ISLs). For the fast establishment of laser link and the maximization of communication time, it is of importance to minimize the acquisition time ...
Kwanyong Lee, Vuong Mai, Hoon Kim
doaj   +2 more sources

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   +2 more sources

A New Measurement Method for BDS Inter-Satellite Link Based on Co-Frequency Co-Time Full Duplex System [PDF]

open access: yesSensors
To meet the urgent need for high-precision ranging and large-capacity transmission in the current BeiDou-3 inter-satellite link system, this paper proposes a novel two-way measurement method based on Co-frequency Co-time Full Duplex (CCFD) system.
Hao Feng   +6 more
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

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   +3 more sources

Inter-satellite link connection strategy for large-scale low earth orbit satellite networks [PDF]

open access: yesTongxin xuebao
For large-scale low earth orbit (LEO) satellite networks, two new inter-satellite link (ISL) connection strategies named Grid-V and Grid+ were proposed, which improved the traditional Grid connection strategy. The proposed strategies made full use of the
YAN Feng   +3 more
doaj   +4 more sources

Inter-Satellite Link Antennas: Review and The Near Future

open access: yes, 2017
çDie sich abzeichnende Entwicklung von Einzelsatellitensysteme hin zu Systemen mit einer Vielzahl an Plattformen gleicher Funktionalität, eröffnet Möglichkeiten für die Durchführung von Missionen die bisher als nicht praktikabel/undurchführbar bewertet wurden.
Tiainen, Arttu
openaire   +3 more sources

Rapid convergent ant colony algorithm for satellite network topology generation [PDF]

open access: yesJisuanji gongcheng, 2019
Aiming at the disadvantages that the ant colony algorithm can slow down the satellite network topology generation and easily fall into the local optimal solution,a new algorithm named SNTG-ACA is proposed,based on the characteristics of satellite network
YANG Li,LIU Yun,WEI Debin,CAI Ruiyan
doaj   +1 more source

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