Results 41 to 50 of about 707 (201)
Second-Order Horizontal Synchrosqueezing of the S-transform: a Specific Wavelet Case Study
, 2021 International audienceWe address the problem of computing efficient time-frequency and timescale representations of non stationary multicomponent signals.
Fourer, Dominique +3 more
core +1 more source
Synchrosqueezing-based Transform and its Application in Seismic Data Analysis [PDF]
Iranian Journal of Oil & Gas Science and Technology, 2015 Seismic waves are non-stationary due to its propagation through the earth. Time-frequency transforms are suitable tools for analyzing non-stationary seismic signals.
Saman Gholtashi +4 more
doaj +1 more source
An Improved Multi-Ridge Extraction Method Based on Differential Synchro-Squeezing Wavelet Transform
IEEE Access, 2021 It is very important to accurately extract the instantaneous frequency (IF) of complex non-stationary signals, so the signal processing methods based on IF are widely used in engineering.
Yanfeng Li +3 more
doaj +1 more source
Analysis of adaptive short-time Fourier transform-based synchrosqueezing transform [PDF]
Analysis and Applications, 2020 Recently, the study of modeling a non-stationary signal as a superposition of amplitude and frequency-modulated Fourier-like oscillatory modes has been a very active research area. The synchrosqueezing transform (SST) is a powerful method for instantaneous frequency estimation and component separation of non-stationary multicomponent signals.
Cai, Haiyan +3 more
openaire +2 more sources
IEEE Access, 2023 Turbocharger is one of the vital parts of a diesel engine causing a high failure rate. Its surface vibration signal contains important time-varying features.
Fei Dong +4 more
doaj +1 more source
Post-Earthquake Damage Identification of Buildings with LMSST
Buildings, 2023 The structure is said to be damaged if there is a permanent shift in the post-event natural frequency of a structure as compared with the pre-event frequency. To assess the damage to the structure, a time-frequency approach that can capture the pre-event
Roshan Kumar +2 more
doaj +1 more source
Engineering Reports, Volume 8, Issue 5, May 2026.Technical approach of the article. ABSTRACT This study focuses primarily on concrete curved girder‐type bridges, which are commonly used for urban roads and highways. Over the last two decades, practical experience in bridge engineering has shown that these bridges have unique mechanical and damage characteristics, unlike conventional straight bridges.
Sai Gong +4 more
wiley +1 more source
The Synchrosqueezing transform for instantaneous spectral analysis [PDF]
, 2015 The Synchrosqueezing transform is a time-frequency analysis method that can decompose complex signals into time-varying oscillatory components. It is a form of time-frequency reassignment that is both sparse and invertible, allowing for the recovery of the signal.
openaire +2 more sources
Specific Emitter Identification Based on Synchrosqueezing Transform for Civil Radar
, 2020 Time-frequency (TF) signal features are widely used in specific emitter identification (SEI) which commonly arises in many applications, especially for radar signals.
Mingzhe Zhu +5 more
core +1 more source
Second-order synchrosqueezing transform or invertible reassignment? Towards ideal time-frequency representations [PDF]
, 2015 International audienceThis paper considers the analysis of multicomponent signals, defined as superpositions of real or complex modulated waves. It introduces two new post-transformations for the short-time Fourier transform, that achieve a compact time ...
Perrier, Valérie +2 more
core +1 more source