An idea about HVSR: Use MUSIC instead of FT
Posted: Tue Jan 19, 2021 8:54 am
In my current understanding:
HVSR is a frequency-based method, and the obtained image is H/V-f
Conventional HVSR is based on the frequency spectrum of the signal obtained by FFT to analyze the abnormality of H and V
But FFT is a signal decomposition based on trigonometric function basis, and it is not possible to obtain very accurate spectra for some unsteady signals. The MUSIC[Multiple Signal classification] algorithm can get better results and has been used in radar signal analysis.
HVSR is a frequency-based method, and the obtained image is H/V-f
Conventional HVSR is based on the frequency spectrum of the signal obtained by FFT to analyze the abnormality of H and V
But FFT is a signal decomposition based on trigonometric function basis, and it is not possible to obtain very accurate spectra for some unsteady signals. The MUSIC[Multiple Signal classification] algorithm can get better results and has been used in radar signal analysis.
