Results 11 to 20 of about 93,612 (311)

A FORMATION SCENARIO FOR THE DISK OF SATELLITES: ACCRETION OF SATELLITES DURING MERGERS [PDF]

open access: yesThe Astrophysical Journal, 2016
ABSTRACT The Disk of Satellites (DoS) observed in the Andromeda galaxy is a thin and extended group of satellites, nearly perpendicular to the disk plane, that share a common direction of rotation about the center of Andromeda. Although a DoS is also observed in the Milky Way galaxy, the prevalance of such structures in more distant ...
Rory Smith   +3 more
openaire   +2 more sources

Decentralized H Observer-Based Attack-Tolerant Formation Tracking Network Control of Large-Scale LEO Satellites via HJIE-Reinforced Deep Learning Approach

open access: yesIEEE Access, 2023
In this study, an H∞ attack-tolerant decentralized observer-based formation tracking control strategy is designed for the network control system (NCS) of large-scale LEO satellite team under external disturbance and attack signal. First, smoothing
Bor-Sen Chen, Hung-Yu Lin
doaj   +1 more source

Universal adaptive control of satellite formation flying [PDF]

open access: yes, 2005
In this paper, a new universal adaptive control scheme for satellite formation flying is developed. The underline idea of our design is to combine the domination design and the monotone adaptive gain.
Pongvthithum, R.   +3 more
core   +1 more source

Formation Satellite Reconstruction Strategy Based on NSGA-II Algorithm

open access: yesShanghai Jiaotong Daxue xuebao, 2021
Aimed at the problem of avoidance strategy of formation satellites when facing the threat of space debris, a non-dominated sorting genetic algorithm (NSGA-II) is improved and used to code satellites. Besides, the improved differential evolution algorithm
SUN Hongqiang   +2 more
doaj   +1 more source

Flight Dynamics Operations of the TanDEM-X Formation [PDF]

open access: yes, 2012
Since end of 2010 the German TerraSAR-X and TanDEM-X satellites are routinely operated as the first configurable single-pass Synthetic Aperture Radar interferometer in space. The two 1340 kg satellites fly in a 514 km sun-synchronous orbit.
Aida, Saika   +4 more
core   +1 more source

Energy cost analysis to station keeping for satellite formation type “TerraSAR-X - TanDEM-X”

open access: yesRUDN Journal of Engineering Research, 2019
The maintenance of a given configuration of the satellite formation of the “TerraSAR-X - TanDEM-X” type is considered. It is assumed that the master satellite performs only maneuvers to maintain the working orbit, and the slave satellite performs ...
Andrey A. Baranov, Nikita V. Chernov
doaj   +1 more source

The formation of regular satellites [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2004
Most models of planet formation envisage that early protoplanets were encompassed by a dusty gaseous disc. A simulation of planet formation by the capture-theory model has shown the formation of such a disc and suggests that its mass was close to that of the protoplanet and that it was a few au in extent.
openaire   +1 more source

THE FORMATION OF PLUTO'S LOW-MASS SATELLITES [PDF]

open access: yesThe Astronomical Journal, 2013
35 pages, 9 figures, revised based on comments from referees and colleagues, AJ, in ...
Kenyon, Scott J., Bromley, Benjamin C.
openaire   +2 more sources

Self-organising satellite constellation in geostationary Earth orbit [PDF]

open access: yes, 2015
This paper presents a novel solution to the problem of autonomous task allocation for a self-organizing satellite constellation in Earth orbit. The method allows satellites to cluster themselves above targets on the Earth’s surface.
Colombo, Camilla   +3 more
core   +1 more source

Novel virtual satellite formation scheme for deterministic transmission

open access: yesTongxin xuebao, 2023
Although satellite formation flying could effectively support deterministic transmission due to its stable formation, but its formation control required significant real-time computational overhead and did not support flexible deployment for multi ...
Chuan XU   +4 more
doaj   +2 more sources

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