Results 271 to 280 of about 191,135 (314)

Phased-array antennas for inter-satellite links

2010 Australian Communications Theory Workshop (AusCTW), 2010
Antennas are key components of inter-satellite links (ISLs). To achieve the necessary antenna gains with modest physical size, directional Ka or V Band antennas are required that may be steered throughout the duration of the ISL. This paper considers options for ISL antennas on low-earth orbit satellites that avoid any mechanical steering.
William G. Cowley, Harry E. Green
openaire   +2 more sources

Analysis of RFI From MEO Inter-Satellite Links to LEO Passive Sensors

IEEE Transactions on Communications
Spaceborne passive sensing (SPS) has been crucial in obtaining the Earth’s environmental and meteorological information. As its signal levels are significantly lower than those of communication systems, passive sensing bands need to be protected from ...
Hao Xie, H. Minn
semanticscholar   +1 more source

Multi-Path Transmission of Real-Time Remote Sensing Data via Heterogeneous LEO Inter-Satellite-Links

IEEE International Conference on Mobile Adhoc and Sensor Systems
Real-time transmission of remote sensing data is critical for many applications. The rapid enhancement in sensing capabilities has posed challenges in sending large volumes of collected information to users on the ground in a timely manner. Deployed with
Binquan Guo, Zehui Xiong, D. Niyato, Shiwen Mao, Zhu Han   +4 more
semanticscholar   +1 more source

Game Theory Based Power Allocation Method for Inter-satellite Links in LEO/MEO Two-layered Satellite Networks

2021 IEEE/CIC International Conference on Communications in China (ICCC), 2021
Performance optimization of the inter-satellite link is the key to improve the performance of satellite networks. This article proposes a dynamic power allocation method for the inter-satellite link of Low Earth Orbit (LEO)/Medium Earth Orbit (MEO ...
Huaming Zhang, Qiang Li, Yijin Zhang, Xun Li   +3 more
semanticscholar   +1 more source

A scheduling strategy to inter-satellite links assignment in GNSS

, 2021
By introducing inter-satellite link (ISL), the dependence of the global navigation satellite system (GNSS) on ground infrastructure can be reduced and its performance enhanced via inter-satellite ranging and communication. Owing to platform restrictions,
Jungang Yan, Lining Xing, Pei Wang, Leyuan Sun, Yingwu Chen   +4 more
semanticscholar   +1 more source

Autonomous Constellation Fault Monitoring with Inter-satellite Links: A Rigidity-Based Approach

ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation
To address the need for robust positioning, navigation, and timing services in lunar environments, this paper proposes a novel fault detection framework for satellite constellations using inter-satellite ranging (ISR).
K. Iiyama, Daniel Neamati, Grace Gao
semanticscholar   +1 more source

Study on Quantum Inter-satellite Link Technology

2015
It is a very important way to realize the satellite data injection, control and autonomous navigation through inter satellite link to communicate and range. Quantum technology has special advantages in realizing the secure communication, and has been gradually tested and applied.
Xian’an Zheng, Ying Wang, Yansong Meng, Zhe Su   +3 more
openaire   +1 more source

Inter-Satellite Links-Enabled Cooperative Satellite Edge Computing

2024 International Conference on Ubiquitous Communication (Ucom)
Satellite edge computing (SEC) has become a research hotspot in academia because of its enormous potential to enhance the performance of satellite communication systems, increase data processing capabilities, and address the growing data demand. However,
Caiguo Li, Bodong Shang
openaire   +2 more sources

Inter-satellite communications using laser based optical links

SPIE Proceedings, 2007
Laser Communications offer a viable alternative to established RF communications for inter-satellite links and other applications where high performance links are a necessity. High data rate, small antenna size, narrow beam divergence, and a narrow field of view are characteristics of laser communications that offer a number of potential advantages ...
Allen S. Panahi, Alex A. Kazemi
openaire   +1 more source

Evaluation of synchronization techniques for inter-satellite links

2016 International Conference on Communications (COMM), 2016
Several space missions launched in recent years used satellite formations for which inter-satellite links (ISL) have to be developed. One of the important challenges to be solved in an ISL is time and frequency synchronization between the two satellites.
Alexandru-Mihai Crisan, Alexandru Martian, Remus Cacoveanu, Daniela Coltuc   +3 more
openaire   +1 more source