Method for characterizing automatically an echo contained in an ultrasonic signal, and system for automatically characterizing an echo contained in an ultrasonic signal.

摘要

Method for characterizing automatically an echo contained in an ultrasonic signal, and system for automatically characterizing an echo contained in an ultrasonic signal.A method of example to characterize automatically an echo contained in a signal generated with an ultrasonic transducer ultrasonic may include receiving data corresponding to the ultrasonic signal, calculate a ratio of energy of the ultrasonic signal and locate the echo using the reason of en. Ergia.The method may include framing a portion of the ultrasonic signal around the echo located and calculate a transformed into fast Fourier (FFT) and an envelope Hilbert of the framed.The method may include estimating m parameters of echo from the FFT and Hilbert envelope of the framed portion, where each of the M vectors of parameter includes a plurality of parameters of echo.Calculate M models of echo parameter based on each of the M vectors of parameter of echo and iteratively minimizing a difference between the framed portion of ultrasonic signal and a sum of M models of parametric resonance.