Patent ID: 7536265

Claim:
A signal analysis method for vibratory interferometry, capable of measuring vibratory characteristics and a vibratory surface profile of an object under test, comprising steps of: obtaining a vibratory stroboscopic interferometric signal using an imaging device when the object under test is vibrating; and analyzing the vibratory stroboscopic interferometric signal with a deconvolution operation to obtain a reformed vibratory stroboscopic interferometric signal; wherein the deconvolution operation comprises steps of: transforming a time-domain stroboscopic pulse intensity into a frequency-domain stroboscopic pulse intensity; transforming a time-domain vibratory stroboscopic interferometric signal into a frequency-domain vibratory stroboscopic interferometric signal; dividing the frequency-domain vibratory stroboscopic interferometric signal by the frequency-domain stroboscopic pulse intensity and obtaining a frequency-domain quotient; and performing an inverse transform operation on the frequency-domain quotient so as to obtain the reformed vibratory stroboscopic interferometric signal.