METHOD AND DEVICE FOR REDUCING THE EFFECTS OF PARASITIC NOISE ON THE DETECTION OF A TARGET BY A SYSTEM COMPRISING A PLURALITY OF ELEMENTARY SENSORS.

摘要

P Elementary sensors are sensitive to the presence of the target in their respective neighborhoods and scattered in an area to be monitored. We form first differences (S1-S2, S3-S2, S4-S2) of the output signals of the elementary sensors taken two by two, we subtract from each first difference (S1-S2), to obtain a second difference, at least another first difference (S3-S2, S4-S2) after filtering it into a filter (213, 213 ') set to minimize the value of the second difference in the absence of a target, and using (216) the second differences thus obtained for the detection of the target. BR/ The invention is particularly applicable for the detection of submarines using magnetic buoys. / P