Results 31 to 40 of about 4,477,022 (227)
Relative Navigation with Intermittent Laser-based Measurement for Spacecraft Formation Flying
Journal of Astronomy and Space Sciences, 2018 This paper presents relative navigation using intermittent laser-based measurement data for spacecraft flying formation that consist of two spacecrafts; namely, chief and deputy spacecrafts. The measurement data consists of the relative distance measured
Jongwoo Lee +2 more
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Advances in Astronomy, 2017 Keeping the flying formation of spacecraft is a key problem which needs to be solved in deep space exploration missions. In this paper, the nonlinear dynamic model of formation flying is established and a series of transformations are carried out on this
He Zhenqi, Zhang Ke, Lv Meibai
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IET Control Theory & Applications, 2023 This paper investigates the coordinated attitude control problem with fractional order sliding mode control theory for spacecraft formation flying by considering of unknown disturbance, inertia uncertainty, partial loss of actuators, and communication ...
Fan Wu, Ming Liu, Zhenyu Feng, Xibin Cao
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An analytical approach to analyzing spacecraft formation-flying motion [PDF]
, 2002 An analytical approach to analyzing spacecraft formation-flying motion is proposed in this paper. Flight trajectory of spacecraft relative motion related to initial values is analytically described, and several mainly relative motion modes between ...
许滨 +5 more
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Finite-Time Synchronization Control of Spacecraft Formation With Network-Induced Communication Delay
IEEE Access, 2017 This paper addresses the distributed orbit synchronization control of spacecraft formation flying under an undirected connected graph and in the presence of unknown external disturbances and communication time-delay.
Ruixia Liu, Xibin Cao, Ming Liu
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A robust control approach for the formation flying of multiple spacecraft [PDF]
1999 European Control Conference (ECC), 1999 We present a disturbance rejection mechanism for the formation flying of multiple spacecraft based on a robust control approach in terms of an H ∞ control problem. The corresponding H ∞ control problem is then solved numerically using linear matrix inequalities.
Mehran Mesbahi, Fred Y. Hadaegh
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Low‐Outgassing Liquid Metal–Silicone Composites for Multifunctional Space Applications
Advanced Materials Technologies, EarlyView.Integrating liquid metal microdroplets into a space‐grade silicone creates a multifunctional composite while preserving its inherent flexibility and low‐outgassing behavior. The composite has 11×$\times$ higher thermal conductivity while remaining thermally stable and maintaining a total mass loss of ≤$\le$ 1% under thermal vacuum testing.
Spencer Pak +5 more
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Satellite Navigation, 2021 Ionospheric irregularities can adversely affect the performance of Global Navigation Satellite System (GNSS). However, this opens the possibility of using GNSS as an effective ionospheric remote sensing tool.
YuXiang Peng +4 more
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Additive Manufacturing of High‐Performance Polymers for Extreme Environments
Advanced Science, EarlyView.Additive manufacturing of high‐performance polymers for extreme environments is critically reviewed through an integrated chemistry‐processing‐structure‐property‐qualification framework. The review compares fused filament fabrication, selective laser sintering, and direct ink writing, linking rheology and thermal history to crystallization, defect ...
Md Tofazzal Hossain +7 more
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On Novel Adaptive Coordinated Control for Spacecraft Formation: An Adjustable Performance Approach
IEEE Access, 2021 This paper investigates an adaptive coordinated control problem of spacecraft formation flying (SFF) system subject to uncertain mass and external perturbations.
Dangjun Zhao, Kai Jin, Caisheng Wei
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