Results 41 to 50 of about 31,908 (302)
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 +1 more source
Precision Orbit Propagator for Low Earth Orbiters
The Journal of Korea Navigation Institute, 2012 Low Earth orbit satellites with satellite navigation receiver use onboard navigation filters for filtering measurement signals and for orbit prediction under signal loss. Precision satellite dynamic models, core of the navigation filter, are studied and a computation program is developed. Gravity acceleration, precision coordinate transform, third-body
Jeong-Rae Kim +2 more
openaire +2 more sources
IEEE Transactions on Aerospace and Electronic SystemsTraditional Global Navigation Satellite System (GNSS) immunity to interference may be approaching a practical performance ceiling. Greater gains are possible outside traditional GNSS orbits and spectrum. GNSS from low Earth orbit (LEO) has long been viewed as promising but expensive, requiring large constellations for rapid navigation solutions.
Peter Anthony Iannucci +1 more
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Routing optimization based on topology control in satellite network
Tongxin xuebao, 2018 A new double-layer satellite network model for space networking was established and a routing algorithm based on topology control (TCRA) was proposed considering the advantages of low earth orbit and stationary earth orbit satellite networks.This model ...
Xiaogang QI, Jiulong MA, Lifang LIU
doaj +2 more sources
Angles-only relative orbit determination in low earth orbit
Advances in Space Research, 2018 Abstract The paper provides an overview of the angles-only relative orbit determination activities conducted to support the Autonomous Vision Approach Navigation and Target Identification (AVANTI) experiment. This in-orbit endeavor was carried out by the German Space Operations Center (DLR/GSOC) in autumn 2016 to demonstrate the capability to perform
Ardaens J. -S., Gaias G.
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The Effect of Air Drag in Optimal Power-Limited Rendezvous Between Coplanar Low-Earth Orbits [PDF]
Journal of Astronomy and Space Sciences, 1998 The effect of air drag was researched when a low-earth orbit spacecraft using power-limited thruster rendezvoused another low-earth orbit spacecraft. The air density was assumed to decrease exponentially.
Gil-Young Maeng, Kyu-Hong Choi
doaj
International Journal of Innovative Science and Research Technology (IJISRT)Low Earth Orbit (LEO) is a popular topic in the field of space exploration and satellite communication. LEO is a popular orbit for various satellite missions due to its advantageous characteristics.
Abdulrhman W Almulhim, Abdullah A Alnaim
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Extension of highly elliptical Earth orbits using continuous low-thrust propulsion
, 2013 The extension of highly elliptical orbits, with free selection of orbit period, using low thrust propulsion is investigated. These newly proposed orbits, termed Taranis orbits, are enabled by existing low-thrust propulsion technology, offering a ...
Macdonald, Malcolm, Anderson, Pamela
core +1 more source
Rethinking Indonesia’s future at low earth orbit [PDF]
, 2022 Outer space activities that were originally carried out during the Cold War era for ideological purposes have now turned into a competition for commercial benefits.
Putro, Yaries Mahardika +1 more
core
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Sickle cell disease (SCD) is a chronic, inherited hemoglobinopathy that requires frequent hospitalization for disease‐related complications. Canadian data on inpatient care is limited. This study compared caregiver‐reported hospital experiences of children with SCD to those with cystic fibrosis (CF), a chronic, autosomal recessive ...
Hailey M. Zwicker +11 more
wiley +1 more source