Results 31 to 40 of about 471,556 (267)

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

open access: yesApplied 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   +5 more
doaj   +1 more source

The Mars orbiter magnetometer of Tianwen-1: in-flight performance and first science results

open access: yesEarth and Planetary Physics, 2023
The Mars Orbiter MAGnetometer (MOMAG) is a scientific instrument onboard the orbiter of China’s first mission for Mars — Tianwen-1. Since November 13, 2021, it has been recording magnetic field data from the solar wind to the magnetic pile-up region ...
YuMing Wang   +19 more
doaj   +1 more source

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

open access: yesIEEE 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   +3 more
doaj   +1 more source

Southern Himalayas rainfall as a key driver of interannual variation of pre-monsoon aerosols over the Tibetan Plateau

open access: yesnpj Climate and Atmospheric Science, 2023
The Tibetan Plateau (TP) is one of the most climate-sensitive regions around the world. Aerosols imported from adjacent regions reach their peak during the pre-monsoon season and play a vital role in the TP environment.
Weichen Liu   +7 more
doaj   +1 more source

Simulation Research and Analysis of Wavelength Modulation Off-Axis Integrated Cavity Output Spectrum Measurement System

open access: yesSensors
Wavelength modulation spectroscopy off-axis integrated cavity output spectroscopy (WMS-OA-ICOS) is an in situ detection technique suitable for analyzing trace gases in the atmospheres, characterized by its high sensitivity and ease of integration ...
Tao Wu   +10 more
doaj   +1 more source

Advancements in Mars Habitation Technologies and Terrestrial Simulation Projects: A Comprehensive Review

open access: yesAerospace
This review examines advancements in Mars habitation technologies, emphasizing Earth-based analog missions and closed-loop life support systems critical for long-duration human presence on the Red Planet.
Yubin Zhong   +7 more
doaj   +1 more source

Cross-Domain Fault Diagnosis Using Knowledge Transfer Strategy: A Review

open access: yesIEEE Access, 2019
Data-driven fault diagnosis has been a hot topic in recent years with the development of machine learning techniques. However, the prerequisite that the training data and the test data should follow an identical distribution prevents the conventional ...
Huailiang Zheng   +6 more
doaj   +1 more source

A Dynamic Illumination-Constrained Spatio-Temporal A* Algorithm for Path Planning in Lunar South Pole Exploration

open access: yesRemote Sensing
Future lunar south pole missions face dual challenges of highly variable illumination and rugged terrain that directly constrain rover mobility and energy sustainability.
Qingliang Miao, Guangfei Wei
doaj   +1 more source

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

open access: yesEntropy, 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   +4 more
doaj   +1 more source

A Comprehensive Review of Path-Planning Algorithms for Planetary Rover Exploration

open access: yesRemote Sensing
Path-planning algorithms for planetary rovers are critical for autonomous robotic exploration, enabling the efficient and safe traversal of complex and dynamic extraterrestrial terrains.
Qingliang Miao, Guangfei Wei
doaj   +1 more source

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