Results 21 to 30 of about 386,776 (298)

Electromagnetic-launch-based method for cost-efficient space debris removal

Open Astronomy, 2020
The increase in space debris orbiting Earth is a critical problem for future space missions. Space debris removal has thus become an area of interest, and significant research progress is being made in this field.
Hou Chongyuan, Yang Yuan, Yang Yikang, Yang Kaizhong, Zhang Xiao, Lu Junyong   +5 more
doaj   +1 more source

Search for design solutions to prevent the Kessler effect [PDF]

E3S Web of Conferences, 2023
The article deals with the problems of near-earth space associated with the formation of objects called "space debris". The main sources of the appearance of "space debris" in near-earth orbits are highlighted.
Terekhova N., Brekalov V., Kumashkova A., Dyukov M.   +3 more
doaj   +1 more source

Estimating the Inertia Tensor Components of an Asymmetrical Spacecraft When Removing It from the Operational Orbit at the End of Its Active Life

Sensors, 2023
The paper presents a method for estimating the inertia tensor components of a spacecraft that has expired its active life using measurement data of the Earth’s magnetic field induction vector components.
A. V. Sedelnikov, D. I. Orlov, M. E. Bratkova, E. S. Khnyryova   +3 more
doaj   +1 more source

Space Debris Detection Using Feature Learning of Candidate Regions in Optical Image Sequences

IEEE Access, 2020
Space debris detection is important in space situation awareness and space asset protection. In this article, we propose a method to detect space debris using feature learning of candidate regions. The acquired optical image sequences are first processed
Jiangbo Xi, Yaobing Xiang, Okan K. Ersoy, Ming Cong, Xin Wei, Junkai Gu   +5 more
doaj   +1 more source

Enhancing Bidirectional Modbus TCP ↔ RTU Gateway Performance: A UDP Mechanism and Markov Chain Approach

Sensors
In the Industrial Internet of Things (IIoT) field, the diversity of devices and protocols leads to interconnection challenges. Conventional Modbus Transmission Control Protocol (TCP) to Remote Terminal Unit (RTU) gateways suffer from high overhead and ...
Shuang Zhao, Qinghai Zhang, Qingjian Zhao, Xiaoqian Zhang, Yang Guo, Shilei Lu, Liqiang Song, Zhengxu Zhao   +7 more
doaj   +1 more source

Inversion of Space Debris Material by Synthetic Light Curves

Aerospace, 2023
Ground-based optical observation of GEO space debris plays an essential role in tracking, identifying, cataloging, and classifying space debris. The factors that affect the brightness of space debris include size, surface material, illumination geometry,
Yuchen Jiang, Shaoming Hu, Junju Du, Xu Chen, Hai Cao, Shuqi Liu, Shuai Feng   +6 more
doaj   +1 more source

Evolution of space debris for spacecraft in the Sun-synchronous orbit

Open Astronomy, 2020
In this paper, the evolution of space debris for spacecraft in the Sun-Synchronous orbit has been investigated. The impact motion, the evolution of debris from the Sun-Synchronous orbit, as well as the evolution of debris clouds from the quasi-Sun ...
Jiang Yu, Li Hengnian, Yang Yue
doaj   +1 more source

Improved orbit predictions using two-line elements

, 2010
The density of orbital space debris constitutes an increasing environmental challenge. There are three ways to alleviate the problem: debris mitigation, debris removal and collision avoidance.
Alfriend, Boers, Boyce, Coffey, Creon Levit, Danielson, Flohrer, Gilbreath, Hedin, Kessler, Legendre, Liou, Liou, Neal, Pearlman, Ries, Schumacher, Snow, Wang, William Marshall   +19 more
core   +1 more source

The HR 4796A Debris System: Discovery of Extensive Exo-Ring Dust Material [PDF]

, 2017
The optically and IR bright, and starlight-scattering, HR 4796A ring-like debris disk is one of the most (and best) studied exoplanetary debris systems.
Debes, John H., Gaspar, Andras, Grady, Carol A., Henning, Thomas, Hines, Dean C., Kuchner, Marc J., Perrin, Marshall, Schneider, Glenn, Wisniewski, John P.   +8 more
core   +3 more sources

Research on Actuator Control System Based on Improved MPC

Actuators
To improve the control accuracy and interference resistance of actuator control systems in complex environments, a complete actuator control system solution has been designed.
Qingjian Zhao, Qinghai Zhang, Shuang Zhao, Xiaoqian Zhang, Shilei Lu, Yang Guo, Liqiang Song, Zhengxu Zhao   +7 more
doaj   +1 more source