Results 21 to 30 of about 513,787 (184)
Displaced geostationary orbits using hybrid low-thrust propulsion [PDF]
, 2010 In this paper, displaced geostationary orbits using hybrid low-thrust propulsion, a complementary combination of Solar Electric Propulsion (SEP) and solar sailing, are investigated to increase the capacity of the geostationary ring that is starting to ...
Heiligers, J.
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Satellite Requirements for Observation of Close Proximity Celestial Bodies
Engineering Proceedings, 2022 Celestial bodies of our solar system remain as a major unexplored and unexploited reserve of natural resources available to humans. Furthermore, those constitute a valuable source of information about the origins and evolution of the solar system and an ...
Juan Misael Gongora-Torres +4 more
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A New Approach to Earth’s Gravity Field Modeling Using GPS-Derived Kinematic Orbits and Baselines
Remote Sensing, 2019 Earth’s gravity field recovery from GPS observations collected by low earth orbiting (LEO) satellites is a well-established technique, and kinematic orbits are commonly used for that purpose.
Xiang Guo, Qile Zhao
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Analytical perturbation method for frozen orbits around the asteroid 433 Eros [PDF]
, 2012 In this paper a method for obtaining initial condition for frozen orbits around fast rotating, highly irregular bodies is presented. Such method is based on a general perturbative theory of motion, for inhomogeneous gravitational fields.
Biggs, James +2 more
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Time-delayed feedback control in astrodynamics [PDF]
, 2009 In this paper we present time-delayed feedback control (TDFC) for the purpose of autonomously driving trajectories of nonlinear systems into periodic orbits.
Biggs, James D., McInnes, Colin R.
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Conjoint Analysis of GPS Based Orbit Determination among Traditional Methods
Sakarya University Journal of Computer and Information Sciences, 2023 Satellite orbits are subject to change due to external forces. Various data gathering and processing methods exist to determine a perturbed orbit. The operators need to estimate satellite orbits for safe orbital operations.
Cevat Özarpa, İbrahim Öz
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Control of Lagrange point orbits using solar sail propulsion [PDF]
, 2008 Several missions have utilised halo orbits around the L1 and L2 previous termLagrangenext term points of the Earth-Sun system. Due to the instability of these orbits, station-keeping techniques are required to prevent escape after orbit insertion.
Bookless, John +3 more
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Remote Sensing, 2022 The augmentation of the Global Navigation Satellite System (GNSS) by Low Earth Orbit (LEO) satellites is proposed as an effective method to improve the precision and shorten the convergence time of Precise Point Positioning (PPP).
Kan Wang +4 more
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Dynamic Simulation for Diffusion of Satellite Detached Particles in Various Orbits [PDF]
فصلنامه علوم و فناوری فضایی, 2009 In this article the simulation of explosion and diffusion of debris consequent on explosion, in the space are studied. This method is simulated by the introduced code and the results are closely checked in accordance with different operational situations
E. Shafiee-Nejhad +3 more
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Remote Sensing, 2023 This paper presents an analysis of the results determining the positions and the velocities of the 21 selected satellite laser ranging stations which performed observations from January 2008 to December 2012.
Stanisław Schillak +3 more
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