A method, based on echo detection by means of the Wavelet Transform, for measuring unknown thicknesses of multilayer structures is presented. Brief theoretical considerations underlying the method are first reported. They highlight the high performance shown by the Wavelet Transform as a powerful analysis tool of echoes in noisy environment. Then, a suitable operative procedure, for the method validation when a standard multilayer structure is not available, is set up and discussed. To this aim tests on (i) simulated signals and (ii) actual signals back from known thicknesses are carried out. Finally, experimental results obtained by the measurement method application to unknown thicknesses referred to the echo-ophthalmic field, are also reported.
Detection of echoes from multilayer structures by using the wavelet transform / Angrisani, Leopoldo; P., Daponte; D'Apuzzo, Massimo. - STAMPA. - 2:(1996), pp. 895-900. (Intervento presentato al convegno IMTC tenutosi a Brussels, Belgium nel 1996) [10.1109/IMTC.1996.507297].
Detection of echoes from multilayer structures by using the wavelet transform
ANGRISANI, LEOPOLDO;D'APUZZO, MASSIMO
1996
Abstract
A method, based on echo detection by means of the Wavelet Transform, for measuring unknown thicknesses of multilayer structures is presented. Brief theoretical considerations underlying the method are first reported. They highlight the high performance shown by the Wavelet Transform as a powerful analysis tool of echoes in noisy environment. Then, a suitable operative procedure, for the method validation when a standard multilayer structure is not available, is set up and discussed. To this aim tests on (i) simulated signals and (ii) actual signals back from known thicknesses are carried out. Finally, experimental results obtained by the measurement method application to unknown thicknesses referred to the echo-ophthalmic field, are also reported.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
