Results 51 to 60 of about 513,787 (184)
Numerical Modelling of Satellite Downlink Signals in a Finslerian-Perturbed Schwarzschild Spacetime
Universe, 2020 The work presented in this paper aims to contribute to the problem of testing Finsler gravity theories by means of experiments and observations in the solar system. Within a class of spherically symmetric static Finsler spacetimes we consider a satellite
Ingo Abraham +2 more
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Numerical Investigation for Periodic Orbits in the Hill Three-Body Problem
Universe, 2020 The current work performs a numerical study on periodic motions of the Hill three-body problem. In particular, by computing the stability of its basic planar families we determine vertical self-resonant (VSR) periodic orbits at which families of three ...
Vassilis S. Kalantonis
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Improving BDS broadcast ephemeris accuracy using ground-satellite-link observations
Satellite Navigation, 2022 The BeiDou Navigation Satellite System (BDS) employs a hybrid constellation including GEO (Geosynchronous Earth Orbit), IGSO (Inclined Geosynchronous Orbit), and MEO (Medium Earth Orbit) satellites, where the GEO and IGSO satellites are critical to ...
Junping Chen +4 more
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International Journal of Aerospace Engineering, 2017 In order to improve the accuracy of the dynamical model used in the orbit determination of the Lagrangian navigation satellites, the nonlinear perturbations acting on Lagrangian navigation satellites are estimated by a neural network.
Youtao Gao +4 more
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Self-organising satellite constellation in geostationary Earth orbit [PDF]
, 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 +2 more sources
An empirical model of long-term thermospheric density change
, 2012 Predicting the positions of satellites in Low Earth Orbit (LEO) requires a comprehensive understanding of the dynamic nature of the atmosphere. For objects in LEO the most significant orbit perturbation is atmospheric drag, which is a function of the ...
Saunders, Arrun, Saunders, A.
core +1 more source
Universe, 2019 We study a general relativistic gravitomagnetic 3-body effect induced by the spin angular momentum S X of a rotating mass M X orbited at distance r X by a local gravitationally bound restricted two-body system S of size ...
Lorenzo Iorio
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Chaotic Orbits in Galactic Satellites
Celestial Mechanics and Dynamical Astronomy, 2003 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Carpintero, Daniel Diego +3 more
openaire +2 more sources
Sun-synchronous highly elliptical orbits using low-thrust propulsion [PDF]
, 2013 Due to restrictions within the current architecture of the global observing system (GOS), space-based remote sensing of Earth suffers from an acute data-deficit over the critical polar-regions. Currently, observation of high-latitude regions is conducted
Macdonald, Malcolm, Anderson, Pamela
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Research on design of permanent inter-satellite-links in satellite networks
Tongxin xuebao, 2006 Based on constellation designation,conditions of permanent inter-satellite-links were analyzed in order to solve problems of continual handoff caused by relative movements of satellites in different orbits in satellite networks.A scheme to design ...
WANG Zhen-yong +3 more
doaj +2 more sources