Results 1 to 10 of about 798,490 (138)

Experimental study on electrostatic migration of different mineral particles composing lunar dust under electron irradiation

Frontiers in Astronomy and Space Sciences, 2023
Dust electrostatic migration is one of the primary causes of dust events on the surface of airless celestial bodies, which can result in multiple dust phenomena, including lunar horizon glow and dust pools, and also offer crucial insights into the ...
Hong Gan, Guangfei Wei, Guangfei Wei, Xiao Zhang, Xiao Zhang, Guojun Xia, Guojun Xia, Jingjing Shi   +7 more
doaj   +1 more source

Numerical Simulation of the Lunar Polar Environment: Implications for Rover Exploration Challenge

Aerospace, 2023
The lunar polar regions are key areas for future exploration due to the long-term continuous illumination and persistently shadowed regions that can cold trap abundant water and other volatiles.
Hong Gan, Chengxuan Zhao, Guangfei Wei, Xiongyao Li, Guojun Xia, Xiao Zhang, Jingjing Shi   +6 more
doaj   +1 more source

Learn Generalization Feature via Convolutional Neural Network: A Fault Diagnosis Scheme Toward Unseen Operating Conditions

IEEE Access, 2020
In recent years, Convolutional neural networks (CNNs) have achieved start-of-art performance in the fault diagnosis field. If there is no available information on the unseen operating conditions, the model trained on the seen operating condition cannot ...
Yuantao Yang, Jiancheng Yin, Huailiang Zheng, Yuqing Li, Minqiang Xu, Yushu Chen   +5 more
doaj   +1 more source

Mission analysis of lunar scientific research station based on MBSE

Hangkong gongcheng jinzhan, 2023
After the completion of the three steps of "circling back", the lunar exploration has changed from the short-term single point exploration to the long-term exploration of lunar scientific research stations with the con-struction of lunar surface ...
GUAN Feng, GE Ping, SHAO Yanli, YUAN Wenqiang, XU Shuai, KANG Yan, PEI Zhaoyu   +6 more
doaj   +1 more source

Spectral interpretation of late-stage mare basalt mineralogy unveiled by Chang’E-5 samples

Nature Communications, 2022
Laboratory spectroscopic and X-ray diffraction analyses on the Chang’E-5 lunar soil samples have demonstrated that the spectral features of lunar late-stage mare basalts are representative of iron-rich high-Ca pyroxene rather than olivine.
Dawei Liu, Xing Wang, Jianjun Liu, Bin Liu, Xin Ren, Yuan Chen, Zhaopeng Chen, Hongbo Zhang, Guangliang Zhang, Qin Zhou, Zhoubin Zhang, Qiang Fu, Chunlai Li   +12 more
doaj   +1 more source

An Improved Similarity Trajectory Method Based on Monitoring Data under Multiple Operating Conditions

Applied Sciences, 2021
With the complexity of the task requirement, multiple operating conditions have gradually become the common scenario for equipment. However, the degradation trend of monitoring data cannot be accurately extracted in life prediction under multiple ...
Jiancheng Yin, Yuqing Li, Rixin Wang, Minqiang Xu   +3 more
doaj   +1 more source

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

A New Time Series Similarity Measurement Method Based on the Morphological Pattern and Symbolic Aggregate Approximation

IEEE Access, 2019
Aiming at the problem that the traditional similarity measurement methods cannot effectively measure the similarity of the time series with the difference both in the trend and detail, this paper proposes a new time series similarity measurement method ...
Jiancheng Yin, Rixin Wang, Huailiang Zheng, Yuantao Yang, Yuqing Li, Minqiang Xu   +5 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

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