Results 61 to 70 of about 771 (159)

Signal Processing for the Cluster Wideband Data Burst Mode

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract The Wideband Data instrument is part of the Cluster spacecraft Wave Experiment Consortium. Its primary data path is a direct connection to the spacecraft data handling system providing real time downlink to the ground stations of the Deep Space Network and Panska Ves Observatory.
K. H. Yearby, S. N. Walker, J. S. Pickett   +2 more
wiley   +1 more source

The Satellite Downlink Replanning Problem: A BP Neural Network and Hybrid Algorithm Approach for IoT Internet Connection

IEEE Access, 2018
In the era of the Internet of Things, the role of a satellite has become increasingly important. The use of satellite resources can meet the needs of high-speed Internet connection of the Internet of Things. Effective communication between satellites and
Yan-Jie Song, Bing-Yu Song, Zhong-Shan Zhang, Ying-Wu Chen   +3 more
doaj   +1 more source

Minimum Link Distance of Terrestrial Testbeds Required to Simulate the Satellite-to-Ground FSO Communication Links

IEEE Photonics Journal
Free-space optical (FSO) communication modules to be mounted on the satellite for satellite-to-ground links need to be tested and confirmed on the ground before they are launched into space.
Woohyeon Moon, Hoon Kim
doaj   +1 more source

Hyperspectral Image Segmentation for Optimal Satellite Operations: In-Orbit Deployment of 1D-CNN

Remote Sensing
AI on spaceborne platforms optimizes operations and increases automation, crucial for satellites with limited downlink capacity. It can ensure that only valuable information is transmitted, minimizing resources spent on unnecessary data, which is ...
Jon Alvarez Justo, Dennis D. Langer, Simen Berg, Jens Nieke, Radu Tudor Ionescu, Per Gunnar Kjeldsberg, Tor Arne Johansen   +6 more
doaj   +1 more source

Performance Analysis of Satellite-to-Ground Coherent Optical Communication System with Aperture Averaging

Applied Sciences, 2018
The satellite-to-ground optical communication system suffers from atmosphere turbulence severely. It is well-known that the coherent detection can increase the receiver sensitivity and performing aperture averaging can reduce the scintillation caused by ...
Hongwei Li, Yongmei Huang, Qiang Wang, Dong He, Zhenming Peng, Qing Li   +5 more
doaj   +1 more source

Near Optimal Timing and Frequency Offset Estimation for 5G Integrated LEO Satellite Communication System

IEEE Access, 2019
The integration of satellite and terrestrial 5G networks aims to provide ubiquitous coverage, improve service reliability, and enable the network scalability.
Wenjin Wang, Yushan Tong, Lingxuan Li, An-An Lu, Li You, Xiqi Gao   +5 more
doaj   +1 more source

Quantum BER estimation modelling and analysis for satellite‐based quantum key distribution scenarios

IET Quantum Communication
The quantum communication channel is considered to be eavesdropped when the signal Quantum Bit Error Rate (QBER) exceeds a defined theoretical limit and is thus considered a figure of merit parameter for assessing the security of a quantum channel.
Abhishek Khanna, Sambuddha Majumder, Adarsh Jain, Dinesh Kumar Singh   +3 more
doaj   +1 more source

A Multi-Dimensional Resource Allocation Scheme: In Beam Hopping Technique Enhanced MF-TDMA Satellite Systems

IEEE Access
Against the backdrop of the widespread deployment of 5G systems and humanity’s entry into a new era of sixth-generation mobile communication, countries are now turning their attention to exploring uncharted territories through satellite ...
Yifeng Jin, Zhong Zheng, Hanyu Zheng, Minglong Pu, Junjie Zeng, Zihe Gao   +5 more
doaj   +1 more source

Toward Converged Satellite/Fiber 1550 nm DS-BB84 QKD Networks: Feasibility Analysis and System Requirements

Photonics
Satellite-based QKD is currently being developed to revolutionize global cryptographic key exchange by facilitating secure communication among remote parties at a global scale.
Aristeidis Stathis, Argiris Ntanos, Nikolaos K. Lyras, Giannis Giannoulis, Athanasios D. Panagopoulos, Hercules Avramopoulos   +5 more
doaj   +1 more source

Feasibility of C‐Band Converged Satellite‐Fibre QKD Links Through Telescope‐to‐SMF Coupling

IET Optoelectronics
This study presents a comprehensive feasibility analysis of low Earth orbit (LEO) satellite‐to‐ground downlink communication for quantum key distribution (QKD), focusing on 1550 nm wavelength.
Aristeidis Stathis, Argiris Ntanos, Panagiotis Kourelias, Nikolaos K. Lyras, Giannis Giannoulis, Athanasios D. Panagopoulos, Hercules Avramopoulos   +6 more
doaj   +1 more source