Results 21 to 30 of about 7,150,509 (282)

A Novel Framework for Anomaly Detection for Satellite Momentum Wheel Based on Optimized SVM and Huffman-Multi-Scale Entropy

Entropy, 2021
The health status of the momentum wheel is vital for a satellite. Recently, research on anomaly detection for satellites has become more and more extensive. Previous research mostly required simulation models for key components.
Yuqing Li, Mingjia Lei, Pengpeng Liu, Rixin Wang, Minqiang Xu   +4 more
doaj   +1 more source

Reflections on NASA's Exploration Atmosphere 5 Mission

Immediate accessThis item is made available by the University of Arizona Center for Human Space Exploration (CHaSE) with support from the University of Arizona Libraries.
Tresch, Trent
core   +4 more sources

A New Life Prediction Scheme for Mechanical System with Considering the Mission Profile Switching

Applied Sciences, 2020
The life prediction is crucial to guarantee the reliability and safety of the mechanical system. The current prediction methods predict the life only based on the historical usage pattern of the mechanical system, and do not consider the mission profile ...
Jiancheng Yin, Huailiang Zheng, Yuantao Yang, Minqiang Xu   +3 more
doaj   +1 more source

Intelligent Unmanned Explorer for Deep Space Exploration

CoRR, 2008
asteroids or comets have received remarkable attention in the world. In small body explorations, especially, detailed in-situ surface exploration by tiny rover is one of effective and fruitful means and is expected to make strong contributions towards scientific studies.
Takashi Kubota, Tetsuo Yoshimitsu
openaire   +2 more sources

The Average Coding Length of Huffman Coding Based Signal Processing and Its Application in Fault Severity Recognition

Applied Sciences, 2019
The transient impact components in vibration signal, which are the major information for bearing fault severity recognition, are often interfered with by ambient noise.
Jiancheng Yin, Mingjia Lei, Huailiang Zheng, Yuantao Yang, Yuqing Li, Minqiang Xu   +5 more
doaj   +1 more source

Observations and interpretations of geomorphologic features in the Tianwen-1 landing area on Mars by using orbital imagery data

Earth and Planetary Physics, 2023
China’s first Mars exploration mission, Tianwen-1, successfully landed in southern Utopia Planitia on Mars on May 15, 2021. This work presents a detailed investigation of the geologic context of the landing area surface for this mission based on orbital ...
Hai Huang, Xing Wang, Yuan Chen, Qing Zhang, FeiYue Zhao, Xin Ren, XingGuo Zeng, Wei Yan, WangLi Chen, Bin Liu, DaWei Liu, LianBo Fu, JianJun Liu   +12 more
doaj   +1 more source

Unraveling the Role of Electron Plateau Distributions in the Power Gap Formation of Chorus Waves: Van Allen Probes Observations

Geophysical Research Letters, 2023
The power gap of chorus waves at ∼0.5fce has been discovered for decades, but its generation mechanism is still under debate. Previous studies have revealed that electron plateau distributions are vitally important for the gap formation.
Huayue Chen, Rui Chen, Xinliang Gao, Quanming Lu, Yangguang Ke, Zhenyu Kong   +5 more
doaj   +1 more source

Dust Deposition at Zhurong Landing Site From Multispectral Camera Observations

Geophysical Research Letters, 2023
Dust deposition is one of the most predominant processes occurring on Mars. Until now, just a few in situ observations have been conducted to investigate the Martian dust.
Qing Zhang, Dawei Liu, Xin Ren, Xing Wang, Lin Guo, Zhaopeng Chen, Bin Liu, Wangli Chen, Wei Yan, Jianjun Liu   +9 more
doaj   +1 more source

A Simplified Extension of Physics-Based Single Particle Model for Dynamic Discharge Current

IEEE Access, 2019
The prediction of the battery temperature and terminal voltage under dynamic load condition is crucial for a satellite battery management system. Restricted by parameter measurability and computing resources, equivalent circuit model has been commonly ...
Jinglong Chen, Rixin Wang, Yuqing Li, Minqiang Xu   +3 more
doaj   +1 more source

Living Inside the UA Space Analog

Immediate accessThis item is made available by the University of Arizona Center for Human Space Exploration (CHaSE) with support from the University of Arizona Libraries.
Tresch, Trent
core   +4 more sources