Results 11 to 20 of about 10,018,306 (276)

A Particle Swarm Optimization-Based Queue Scheduling and Optimization Mechanism for Large-Scale Low-Earth-Orbit Satellite Communication Networks. [PDF]

open access: yesSensors (Basel)
The spatial topology of large-scale low-Earth-orbit satellite communication networks is dynamically time-variant, and the load on the output ports of network nodes is continuously changing.
Zhang Z   +6 more
europepmc   +2 more sources

Estimation of Accessible Probability in a Low Earth Orbit Satellite to Ground Laser Communications

open access: yesRadioengineering, 2010
The accessible probability of a low-orbit satellite from ground is estimated by using images taken by a meteorological satellite and by analyzing visible passes of the satellite.
N. Kura, M. Toyoshima, Y. Takayama
core   +1 more source

Efficient Modulation Classification Based on Complementary Folding Algorithm in UVLC System

open access: yesIEEE Photonics Journal, 2022
Modulation classification (MC) has become a widely used technology, which is of great value in both commercial and civil applications. It actually completes the classification task of modulation signal through various means.
Chi Xu, Ruizhe Jin, Wendi Gao, Nan Chi
doaj   +1 more source

Measuring a Low-Earth-Orbit Satellite Network

open access: yes2023 IEEE 34th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2023
Starlink and alike have attracted a lot of attention recently, however, the inner working of these low-earth-orbit (LEO) satellite networks is still largely unknown. This paper presents an ongoing measurement campaign focusing on Starlink, including its satellite access networks, gateway and point-of-presence structures, and backbone and Internet ...
Jianping Pan 0001   +2 more
openaire   +4 more sources

Orbit Design and Trajectory Analysis of satellite in Low Earth Orbit [PDF]

open access: yesINCAS Bulletin, 2021
An Attitude control system for a satellite in low earth orbit is designed in this project. As a reference, CARTOSAT-2 is selected to design the AOCS. CARTOSAT-2 is located in LEO so it suits the needs of the projects.
M. RAJA   +4 more
doaj   +1 more source

Balanced Low Earth Satellite Orbits [PDF]

open access: yesAdvances in Astronomy, 2020
The present work aims at constructing an atlas of the balanced Earth satellite orbits with respect to the secular and long periodic effects of Earth oblateness with the harmonics of the geopotential retained up to the 4th zonal harmonic. The variations of the elements are averaged over the fast and medium angles, thus retaining only the secular and ...
A. Mostafa, M. H. El Dewaik
openaire   +2 more sources

A passive satellite deorbiting strategy for medium Earth orbit using solar radiation pressure and the J(2) effect [PDF]

open access: yes, 2012
The growing population of space debris poses a serious risk to the future of space flight. To effectively manage the increase of debris in orbit, end-of life disposal has become a key requirement for future missions.
Colombo, Camilla   +2 more
core   +4 more sources

Self-organising low Earth orbit constellations for Earth observation [PDF]

open access: yes, 2014
This paper presents a novel method of manipulating the spatial pattern of a fractionated micro-satellite constellation in Low Earth Orbit. The method developed allows satellites to manipulate the longitudinal position of their ground-tracks over the ...
McInnes, Colin, Mushet, Garrie
core   +3 more sources

LEO Satellite Constellation for Global-Scale Remote Sensing With On-Orbit Cloud AI Computing

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
This article proposes a new satellite-based framework for global-scale remote sensing that is integrated with on-orbit cloud computing and artificial intelligence (AI) services.
Yuejin Li   +4 more
doaj   +1 more source

Low Power LoRa Transmission in Low Earth Orbiting Satellites [PDF]

open access: yes, 2021
In the recent past, a modulation technique called “LoRa” has become popular in the communication industry due to its long range capabilities with low power consumption, a few satellites have carried LoRa and worked successfully inspite of being skeptical about Doppler shift, packet loss, etc.
Rifath Shaarook, Srimathy Kesan
openaire   +2 more sources

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