Results 51 to 60 of about 17,540,816 (185)

STFT-based multisynchrosqueezing transform using a second-order signal model for seismic data analysis

Scientific Reports
Since time-frequency analysis (TFA) technique can reveal the local properties of seismic signals, it has been widely applied in seismic data analysis.
Bing Pingping, Ma Yabin, Wang Zichun, Jiang Yetao, Liu Wei   +4 more
doaj   +1 more source

Conception of Voltage Interruption Signal using Continuous Wavelet, Discrete Wavelet, and Wavelet Packet Analysis [PDF]

E3S Web of Conferences
This paper focuses on conception of voltage interruption signal in different domains. According to IEEE Standard 1159, Interruption is categorised under short-duration voltage variations in the description of classification of ‘Power quality Disturbances’
Priyadarshini M. S., Bajaj Mohit, Avikal Shwetank, Vishnuram Pradeep   +3 more
doaj   +1 more source

T‐800: An 800 Hz Data Glove for Precise Hand Gesture Tracking

SmartBot, EarlyView.
Hand motion capture provides critical insights into human dexterity and facilitates advancements in robotic manipulation, yet existing systems are limited by a trade‐off between temporal resolution and visual occlusion. Here, the authors present T‐800, a high‐bandwidth data glove achieving synchronized full‐hand motion capturing at 800 Hz.
Haoyang Luo, Zihang Zhao, Leiyao Cui, Saiyao Zhang, Liu Yang, Zhi Han, Xiyuan Tang, Yixin Zhu   +7 more
wiley   +1 more source

A Novel Method to Detect Multiple Arrhythmias Based on Time-Frequency Analysis and Convolutional Neural Networks

IEEE Access, 2019
Electrocardiogram (ECG) is an efficient and commonly used tool for detecting arrhythmias. With the development of dynamic ECG monitoring, an effective and simple algorithm is needed to deal with large quantities of ECG data.
Ziqian Wu, Tianjie Lan, Cuiwei Yang, Zhenning Nie   +3 more
doaj   +1 more source

Using A Sliding Window Phase Matching Method for Imaging of GNSS Radio Occultation Signals

Remote Sensing, 2021
Global Navigation Satellite System Radio Occultation (GNSS-RO) is a technique used to sound the atmosphere and derive vertical profiles of refractivity.
Thomas Sievert, Joel Rasch, Anders Carlström, Vinícius Ludwig Barbosa, Mats I. Pettersson, Viet Vu   +5 more
doaj   +1 more source

Robotic Palpation for Spatiotemporal Arterial Pulse Quantification and Mapping Using Multilevel Microdome‐Based Soft Pressure Sensors

Small, EarlyView.
This study presents the development of multilevel pressure‐sensitive layers replicated from liquid‐metal‐based structures for optimizing soft pressure sensors in robotic palpation. This approach enhances sensitivity and range for subtle arterial displacement detection.
Seong‐Min Im, Jaehwan Jang, Byeong‐Sun Park, Jiwon Choi, Kyeong Taek Oh, Min‐gu Kim   +5 more
wiley   +1 more source

Vibration-based Fault Diagnostic of a Spur Gearbox

MATEC Web of Conferences, 2016
This paper presents comparative studies of Fast Fourier Transform (FFT), Short Time Fourier Transform (STFT) and Continuous Wavelet Transform (CWT) as several advanced time-frequency analysis methods for diagnosing an early stage of spur gear tooth ...
Hartono Dennis, Halim Dunant, Roberts Gethin Wyn, Liu Qianyu   +3 more
doaj   +1 more source

Experimental Detection of Spur Gear Eccentricity Severity Through Denoised FFT and STFT Analysis [PDF]

EPJ Web of Conferences
Eccentricity in spur gears commonly results from manufacturing tolerances and assembly errors, generating periodic geometric deviations that affect gear-mesh dynamics and vibration signatures.
Sigonde Vhahangwele Colleen, Sozinando Desejo Filipeson, Kouejou Bernard Xavier Tchomeni, Alugongo Alfayo Anyika   +3 more
doaj   +1 more source

Pickin' up good vibrations: a systematic review of footfall detection and analysis in the realm of wildlife surveying

Wildlife Biology, EarlyView.
Exploration of new wildlife surveying methodologies that leverage advances in sensor technology and machine learning has led to tentative research into the application of seismology techniques. This, most commonly, involves the deployment of a footfall trap – a seismic sensor and data logger customised for wildlife footfall.
Benjamin J. Blackledge, Luigi La Spada, Robert A. Briers, Niamh M. McHugh, Patrick J. C. White   +4 more
wiley   +1 more source

Mutil-Component LFM Signal Parameter Estimation Method Using STFT And Zoom-FRFT

四川大学学报. 自然科学版, 2016
Traditional parameter estimation methods of multi-component linear frequency modulation (MLFM) signal based on Fractional Fourier transform (FRFT) could solve neither the satisfactory precision nor the lesser computation cost.
SUN Le, ZHANG Heng-Yang, WEI Jun, LIU Li
doaj