Data‐Driven Satellite Drag Modeling Without Dynamic Knowledge of the Atmosphere
Space WeatherIncreasing congestion in low Earth orbit (LEO) from new satellite deployments and a growing debris population has made accurate orbital trajectory prediction essential for anticipating and avoiding potential collisions on a regular basis.
William E. Parker, Richard Linares
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The Hamiltonian Structure-Preserving Control and Some Applications to Nonlinear Astrodynamics
Journal 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
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Encoding Cumulation to Learn Perturbative Nonlinear Oscillatory Dynamics. [PDF]
Adv Sci (Weinh)Weak nonlinearities critically shape the long term behavior of oscillatory systems but are difficult to identify from data. A data‐driven framework is introduced to infer governing equations of weakly nonlinear oscillators from sparse and noisy observations.
Ma T +5 more
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Fuel Optimization for Low Earth Orbit Maintenance [PDF]
Journal of Astronomy and Space Sciences, 2008 The resolution of Earth images taken from a satellite has close relation with satellite's altitude. If a satellite has lower altitude, it gets a picture having better resolution.
Yong Jae Park +3 more
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Novel Structure and Thermal Design and Analysis for CubeSats in Formation Flying
Aerospace, 2021 The CANYVAL-C (CubeSat Astronomy by NASA and Yonsei using a virtual telescope alignment for coronagraph) is a space science demonstration mission that involves taking several images of the solar corona with two CubeSats—1U CubeSat (Timon) and 2U CubeSat (
Yeon-Kyu Park +2 more
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Reliable event detection for Taylor methods in astrodynamics [PDF]
Monthly notices of the Royal Astronomical Society, 2022 We present a novel approach for the detection of events in systems of ordinary differential equations. The new method combines the unique features of Taylor integrators with state-of-the-art polynomial root finding techniques to yield a novel algorithm ...
F. Biscani, D. Izzo
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Laser-based Relative Navigation Using GPS Measurements for Spacecraft Formation Flying [PDF]
Journal of Astronomy and Space Sciences, 2015 This study presents a precise relative navigation algorithm using both laser and Global Positioning System (GPS) measurements in real time. The measurement model of the navigation algorithm between two spacecraft is comprised of relative distances ...
Kwangwon Lee +4 more
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Revisiting high-order Taylor methods for astrodynamics and celestial mechanics [PDF]
Monthly notices of the Royal Astronomical Society, 2021 We present heyoka, a new, modern and general-purpose implementation of Taylor’s integration method for the numerical solution of ordinary differential equations.
F. Biscani, D. Izzo
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Fuel-Optimal Altitude Maintenance of Low-Earth-Orbit Spacecrafts by Combined Direct/Indirect Optimization [PDF]
Journal of Astronomy and Space Sciences, 2015 This work presents fuel-optimal altitude maintenance of Low-Earth-Orbit (LEO) spacecrafts experiencing non-negligible air drag and J2 perturbation.
Kyung-Ha Kim +2 more
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Performance Comparison of the Batch Filter Based on the Unscented Transformation and Other Batch Filters for Satellite Orbit Determination [PDF]
Journal of Astronomy and Space Sciences, 2009 The main purpose of the current research is to introduce the alternative algorithm of the non-recursive batch filter based on the unscented transformation in which the linearization process is unnecessary.
Eunseo Park +2 more
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