Title :
On the uncertainty in wavelet-based signal analysis
Author :
Peetto, L. ; Sasdelli, Renato ; Tinarelli, Roberto
Author_Institution :
Dipt. di Ingegneria Elettrica, Bologna Univ., Italy
Abstract :
The evaluation of the uncertainty is a task usually neglected by people performing wavelet-based measurements. In this paper, the wavelet analysis aimed at gauging the synthesis of disturbances is considered and a general expression of the uncertainty affecting the above synthesis is provided. Simulations have been performed to validate the above expression, which holds no matter the mother wavelet used and the disturbance nature. Results of experiments on actual signal are also reported and discussed.
Keywords :
ISO standards; discrete wavelet transforms; measurement standards; measurement theory; measurement uncertainty; signal processing; digital signal processing; disturbance synthesis; measurement uncertainty; power quality; wavelet analysis; wavelet-based measurements; Discrete wavelet transforms; Filter bank; Genetic expression; Low pass filters; Measurement uncertainty; Performance evaluation; Power quality; Signal analysis; Signal synthesis; Wavelet analysis;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2004. IMTC 04. Proceedings of the 21st IEEE
Print_ISBN :
0-7803-8248-X
DOI :
10.1109/IMTC.2004.1351036
