Title :
Real-time Wigner distribution with a SAW-convolver
Author :
Schrom, G. ; Pietsch, W. ; Seifert, F. ; Reindl, L. ; Arabjan, Ch.
Author_Institution :
Inst. fur Allgemeine Electrotech. und Elektronik, Tech. Univ. Wien, Austria
Abstract :
A new method for determining the Wigner distribution (WD) of a signal is presented. Using a surface acoustic wave convolver for fast computing and an oscilloscope as a display element, a unique way of computing the WD of a signal (e.g., the impulse response of a linear system) has been investigated. An experimental system has been built and used to calculate the WD of several different filters and signals. The mathematical background of the method, its limitations and dependency on the properties of the convolver, and possible implementations are investigated
Keywords :
Wigner distribution; real-time systems; signal processing equipment; surface acoustic wave convolution; SAW convolver; filters; impulse response; linear system; real-time Wigner distribution; signals; surface acoustic wave convolver; Acoustic distortion; Acoustic waveguides; Acoustic waves; Convolution; Convolvers; Distortion measurement; Electrodes; Surface acoustic waves; Time measurement; Ultrasonic variables measurement;
Conference_Titel :
Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2940-6
DOI :
10.1109/ULTSYM.1995.495556
