Results 11 to 20 of about 383,072 (432)

Detecting Spacecraft Anomalies Using LSTMs and Nonparametric Dynamic Thresholding [PDF]

Knowledge Discovery and Data Mining, 2018
As spacecraft send back increasing amounts of telemetry data, improved anomaly detection systems are needed to lessen the monitoring burden placed on operations engineers and reduce operational risk.
K. Hundman, V. Constantinou, Christopher Laporte, Ian Colwell, T. Söderström   +4 more
semanticscholar   +1 more source

Investigating Mercury’s Environment with the Two-Spacecraft BepiColombo Mission [PDF]

Space Science Reviews, 2020
The ESA-JAXA BepiColombo mission will provide simultaneous measurements from two spacecraft, offering an unprecedented opportunity to investigate magnetospheric and exospheric dynamics at Mercury as well as their interactions with the solar wind ...
A. Milillo, M. Fujimoto, G. Murakami, J. Benkhoff, J. Zender, S. Aizawa, M. Dósa, L. Griton, D. Heyner, G. Ho, S. Imber, S. Imber, X. Jia, T. Karlsson, R. Killen, M. Laurenza, S. Lindsay, S. McKenna-Lawlor, A. Mura, J. Raines, D. Rothery, N. André, Wolfgang Baumjohann, A. Berezhnoy, A. Berezhnoy, P. Bourdin, P. Bourdin, E. Bunce, F. Califano, J. Deca, S. Fuente, C. Dong, C. Grava, S. Fatemi, P. Henri, S. Ivanovski, B. Jackson, M. K. James, E. Kallio, Y. Kasaba, E. Kilpua, Masanori Kobayashi, B. Langlais, F. Leblanc, C. Lhotka, V. Mangano, A. Martindale, S. Massetti, A. Masters, M. Morooka, Y. Narita, J. S. Oliveira, J. S. Oliveira, D. Odstrcil, S. Orsini, M. Pelizzo, C. Plainaki, F. Plaschke, F. Sahraoui, K. Seki, J. Slavin, R. Vainio, P. Wurz, S. Barabash, C. Carr, D. Delcourt, K. Glassmeier, M. Grande, M. Hirahara, J. Huovelin, O. Korablev, H. Kojima, H. Lichtenegger, S. Livi, A. Matsuoka, R. Moissl, M. Moncuquet, K. Muinonen, E. Quémerais, Yoshifumi Saito, S. Yagitani, I. Yoshikawa, J. Wahlund   +82 more
semanticscholar   +1 more source

Prescribed performance control approaches, applications and challenges: A comprehensive survey

Asian Journal of Control, Volume 25, Issue 1, Page 241-261, January 2023., 2023
Abstract As to control systems, transient performance is as important as steady‐state performance. For some special dynamic systems, transient performance is a more prior index in comparison with the steady‐state one. Prescribed performance control (PPC) has been proved to be a powerful tool that guarantees control system outputs/errors with desired ...
Xiangwei Bu
wiley   +1 more source

The New Horizons Spacecraft [PDF]

Space Science Reviews, 2008
The New Horizons spacecraft was launched on 19 January 2006. The spacecraft was designed to provide a platform for seven instruments that will collect and return data from Pluto in 2015. The design drew on heritage from previous missions developed at The Johns Hopkins University Applied Physics Laboratory (APL) and other missions such as Ulysses.
Christopher B. Hersman, David Y. Kusnierkiewicz, Douglas S. Mehoke, Deborah A. Clancy, Stephen P. Williams, W. C. Gibson, Glen H. Fountain, Thomas B. Coughlin, S. Alan Stern, Geffrey K. Ottman, J.D. Kinnison, Steven Vernon, T. Adrian Hill, Timothy S. Herder, Gabe Rogers, Christopher C. DeBoy, James M. Stratton   +16 more
openaire   +4 more sources

Spacecraft Floating Potential Measurements for the Wind Spacecraft

The Astrophysical Journal Supplement Series, 2023
Abstract Analysis of 8,804,545 electron velocity distribution functions, observed by the Wind spacecraft near 1 au between 2005 January 1 and 2022 January 1, was performed to determine the spacecraft floating potential, ϕ sc. Wind was designed to be electrostatically clean, which helps keep the magnitude of ϕ
Lynn B. Wilson III, Chadi S. Salem, John W. Bonnell   +2 more
openaire   +2 more sources

Thermally driven hydrogen compression using metal hydrides

International Journal of Energy Research, Volume 46, Issue 15, Page 22049-22069, December 2022., 2022
This article overviews R&D activities related to the thermally‐driven hydrogen compression utilising metal hydrides. The focus is put on the interrelation between properties of metal hydride materials and their hydrogen compression performances, first, operating pressure – temperature range, process productivity and efficiency.
Mykhaylo Lototskyy, Vladimir Linkov
wiley   +1 more source

Multi-Task Learning and Multimodal Fusion for Road Segmentation

IEEE Access, 2023
The road segmentation task is to extract the road surface from the image at pixel level. In road segmentation for remote sensing images, deep learning-based methods have shown high-quality results in various scenarios.
Bowen Cheng, Miaomiao Tian, Shuai Jiang, Weiwei Liu, Yalong Pang   +4 more
doaj   +1 more source

Safety Design for the China Space Station

Space: Science & Technology, 2023
The safety of a space station under normal and abnormal conditions can be ensured only by comprehensively identifying various hazards of the space station during its whole mission cycle and formulating control measures against each hazard.
Wei Li, Yongqing Hou, Fengjiang An, Qiaoli Xia, Zhihai Li, Qiang Zhou   +5 more
doaj   +1 more source

Mechanical analysis and verification of the large-scale rack structure about the zero-gravity test of manipulator of the space station

The Journal of Engineering, 2018
In this article, the mechanical properties of large-scale rack structures are analysed by MSC Marc analysis software is verified through the modal test.
Hailin Dai, Chengli Zhang, Fanwei Meng, Shaohua Meng, Feng Gao   +4 more
doaj   +1 more source

Research on Sand-dust Separation Technology Based on Gas-solid Two-phase Numerical Simulation [PDF]

E3S Web of Conferences, 2020
The separation technology in the large-scale sand-dust environment ground simulation test system applicable to the environmental adaptability and reliability verification of aerospace electromechanical products is studied.
Zhang Lei, Wang Junwei, Li Guohua
doaj   +1 more source