H - Electricity – 03 – H
Patent
H - Electricity
03
H
H03H 17/00 (2006.01) H03H 17/02 (2006.01) H03H 21/00 (2006.01)
Patent
CA 2110540
The invention relates to a process for the extraction of a time- variable useful signal having a finite spatial extension by an array of N sensors or transducers, N being equal to or greater than 3, receiving said useful signal to which have been added q spatially coherent additive noises, q being lower than N, comprising the following stages: -~a stage (42) of acquiring unprocessed signals on the output of each sensor, - ~a stage (43) for the band-pass filtering of said signals in order to restrict to the frequency band of the useful signals, -~a stage (44) of digitizing the filtered signals, a stage (46) of calculating spatial prediction error signals of the noise, - ~a stage of analyzing prediction error signals so as to carry out the detection of the useful signal and its separation from the q additive noises. The invention also relates to a device for extracting a useful signal. Particular application to the field of magnetic detection.
Blanpain Roland
Flament Bruno
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