Joint Time Frequency Analysis Based Synthesis of Acceleration-Time History and Response Spectra for Japanese Earthquakes

2021 ◽  
pp. 21-31
Author(s):  
R. Ramkrishnan ◽  
Deepa Devaraj ◽  
Sreevalsa Kolathayar ◽  
T. G. Sitharam
Keyword(s):  
Frequency Analysis ◽  
Time History ◽  
Response Spectra ◽  
Time Frequency Analysis ◽  
Acceleration Time ◽  
Time Frequency ◽  
Acceleration Time History

Advances in Extraction of Signal From Ground Motion Time Histories Using Time-Frequency Analysis

2018 ◽  
pp. 1-30
Author(s):  
Vaneeta Devi ◽  
M. L. Sharma
Keyword(s):  
Ground Motion ◽  
Frequency Analysis ◽  
Earthquake Engineering ◽  
Spectral Estimation ◽  
Time History ◽  
Time Frequency Analysis ◽  
Shape Distribution ◽  
Time Frequency ◽  
Motion Time ◽  
Time Histories

Time-frequency representation and spectral features extraction from a digitally recorded ground motion time history of an earthquake is cornerstone in earthquake engineering signal processing and interpretation. Recently developed time-frequency analysis (TFA) techniques are one of the most suitable techniques for the spectral estimation of signals whose frequency content varies with time. The most often used TFA techniques are short-term Fourier transform, Gabor transform, wavelet transform, Wigner-Ville distribution, Choi-William distribution, and cone shape distribution. The spectrograms of TFA reveal better spectral estimation in time-frequency domain and hence recommended to estimate local frequencies, dominate frequency and their incident time. Moreover, the time of occurrence of frequency component corresponding to maximum energy burst as well as its variation with time can also be identified. Results obtained from TFA techniques shows better picture of the spectral content in the data than the other conventional techniques.

Time-Frequency Analysis of Partial Discharge Phenomena in SF6 gas using Wavelet Transform

1997 ◽  
Vol 117 (3) ◽  
pp. 338-345 ◽  
Author(s):  
Masatake Kawada ◽  
Masakazu Wada ◽  
Zen-Ichiro Kawasaki ◽  
Kenji Matsu-ura ◽  
Makoto Kawasaki
Keyword(s):  
Wavelet Transform ◽  
Frequency Analysis ◽  
Partial Discharge ◽  
Time Frequency Analysis ◽  
Time Frequency

Anti-Radiation-Missile detection based on parameterized time-frequency analysis

2010 ◽  
Vol 30 (11) ◽  
pp. 3108-3110
Author(s):  
Xiao-ming LIU ◽  
Jian-dong WANG ◽  
Xu-dong WANG
Keyword(s):  
Frequency Analysis ◽  
Time Frequency Analysis ◽  
Time Frequency
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