Method of analysis of the acquired signals to act automatically on at least a significant time

摘要

- method of automatic analysis of signals acquired by one or several sensors of elastic or acoustic waves in order to act automatically with great precision on the other, at least a significant time as the instant of the first inlet to each sensor (ti) and / or the time of end (tf) of these same signals. - the method essentially comprises a determination of the pseudo - period corresponding to the inverse of the dominant frequency of the frequency spectrum of each signal is acquired, the coding of each signal acquired in order to form a signal coded in binary with reference to a first value - threshold dependent on the acquired signal, the formation, for each of them of a signal, integral, by summation of the signal coded in binary on a sliding window so as to determine a second value - threshold, and the positioning of the relevant instant is sought (ti, tf) on each signal acquired by reference to an instant where the integral signal corresponding reaches this second threshold value -. The method is self-adaptive, since it uses of the parameters (the values - thresholds in particular), which depend on the characteristics of the received signals. - applications, in particular, to the seismic monitoring (active or passive) of underground reservoirs, in the field of the acoustic in general, in the sonar, etc, 1 / p