Results 61 to 70 of about 795 (205)

Analysis of Scaling Parameters of the Batch Unscented Transformation for Precision Orbit Determination using Satellite Laser Ranging Data [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2011
The current study analyzes the effects of the scaling parameters of the batch unscented transformation on precision satellite orbit determination. Satellite laser ranging (SLR) data are used in the orbit determination algorithm, which consists of ...
Jae-Hyuk Kim   +7 more
doaj   +1 more source

Editorial. [PDF]

open access: yesJ Astronaut Sci, 2021
Akella MR.
europepmc   +2 more sources

Model Predictive Control for Gliding Descent on Mars

open access: yesApplied Sciences
This paper proposes a closed-loop nonlinear model predictive control for the first time for the trajectory tracking of a spaceplane descending and gliding on Mars.
Jhonathan Murcia-Piñeros   +2 more
doaj   +1 more source

Optimal Gliding Trajectories for Descent on Mars

open access: yesApplied Sciences
In this paper, optimal gliding trajectories are analyzed, formulating an optimal control problem to be solved computationally via nonlinear programming.
Jhonathan Murcia-Piñeros   +3 more
doaj   +1 more source

Orbital Transfers in a Binary Asteroid System Considering Flattening of the Bodies and Solar Radiation Pressure

open access: yesAerospace
This paper aims to investigate the effects of asteroid size and shape and solar radiation pressure in the trajectories of a spacecraft in transfers between the collinear equilibrium points of a binary non-spherical asteroid system.
L. B. T. Santos   +3 more
doaj   +1 more source

The Hamiltonian Structure-Preserving Control and Some Applications to Nonlinear Astrodynamics

open access: yesJournal of Applied Mathematics, 2013
A systematic research on the structure-preserving controller is investigated in this paper, including its applications to the second-order, first-order, time-periodic, or degenerated astrodynamics, respectively.
Ming Xu, Yan Wei, Shengli Liu
doaj   +1 more source

GENERAL CONCEPTS ABOUT SOLID BODY ASTRODYNAMICS

open access: yesNonconventional Technologies Review, 2020
The paper presents the theoretical foundation of the dynamics of the solid body in gravitational movement in the outer space. It is known that the movement of solid bodies in space is subjects both the laws of Newton's classical mechanics and those of ...
Viorel Mihai Nani, Alin Nani
doaj  

Swarm of lightsail nanosatellites for Solar System exploration. [PDF]

open access: yesSci Rep, 2023
Santi G   +15 more
europepmc   +1 more source

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