Results 11 to 20 of about 1,149 (246)
Spacecraft alignment determination and control for dual spacecraft precision formation flying [PDF]
Acta Astronautica, 2018 Abstract Many proposed formation flying missions seek to advance the state of the art in spacecraft science imaging by utilizing dual-spacecraft precision formation flying (PFF) to enable a “virtual” telescope (VT). Using precision dual-spacecraft alignment, very long focal lengths can be achieved by locating the optics on one spacecraft and the ...
Philip C. Calhoun +2 more
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Formation flying of spacecrafts for monitoring and inspection
, 2009 Formation flying of multiple spacecrafts has been an essential of interest in space technology. Groups of spacecrafts involved in formation can provide higher performance with comparable lower cost in many space applications. This thesis presents the work on studying the formation flying control issues of two satellites with close separation ...
Jian Ma
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FFDEM: Demonstrating Formation Flying with Small Spacecraft
, 2002 Several missions are currently proposed that require very close formation flying. Missions such as IRSI -Darwin and Xeus will require the development of new techniques and equipment to achieve the stringent performances required. Both these missions will be preceded by demonstration missions, aimed at validating concepts of formation flying and ...
Gomes, LuÃs +3 more
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Applied Sciences, 2022 This paper investigates the issues of iterative learning algorithm-based robust thruster fault reconstruction and reconfigurable fault-tolerant control for spacecraft formation flying systems subject to space perturbations.
Yule Gui +3 more
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A Survey of Precision Formation Relative State Measurement Technology for Distributed Spacecraft
Aerospace, 2022 High-precision relative-state measurement technology is one of the key technologies for achieving the precision formation flying of distributed spacecraft.
Zhang Zhang +5 more
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IEEE Access, 2023 In this paper, the problem of distributed 6-DOF coordinated control for spacecraft formation is investigated. The dynamics of each spacecraft consisting of relative attitude and position motions are modeled into a unified Euler-Lagrange formulation.
Lintao Li, Ying Zhang, Rui Zhang
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Complexity, 2020 In this paper, a nonsingular fast terminal adaptive neurosliding mode control for spacecraft formation flying systems is investigated. First, a supertwisting disturbance observer is employed to estimate external disturbances in the system. Second, a fast
Xiaohan Lin +4 more
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Charged-Spacecraft Formation: Concept, Deployment and Coulomb-Force Control
IEEE Access, 2020 Proximate spacecraft formation flying has many applications in high accurate earth observation and astronomy. In comparison to conventional or electronic thrust, Coulomb thrust has obvious advantages in close-formation control, such as fast throttling ...
Mingpei Lin, Ming Xu
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Learning-Based Pose Estimation of Non-Cooperative Spacecrafts with Uncertainty Prediction
Aerospace, 2022 Estimation of spacecraft pose is essential for many space missions, such as formation flying, rendezvous, docking, repair, and space debris removal. We propose a learning-based method with uncertainty prediction to estimate the pose of a spacecraft from ...
Kecen Li, Haopeng Zhang, Chenyu Hu
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Application of Analytic Solution in Relative Motion to Spacecraft Formation Flying in Elliptic Orbit [PDF]
Journal of Astronomy and Space Sciences, 2008 The current paper presents application of a new analytic solution in general relative motion to spacecraft formation flying in an elliptic orbit. The calculus of variations is used to analytically find optimal trajectories and controls for the given ...
Hancheol Cho +2 more
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