Improved beamforming method for analysing signals received by a transducer arrray, and relative detection system

摘要

A beamforming method, for analysing signals received by an array of transducers (6), includes: dividing the array of transducers (6) into a number of subgroups; and defining a given number M0 of combinations of the subgroups, each of the combinations of subgroups being such as to form the array as a whole. The method also includes, for each beam being formed : aligning signals received by the transducers (6) in each subgroup in the pointing direction of the beam, and combining aligned signals of the transducers in each subgroup to supply respective resulting signals; making coherence evaluations of the respective resulting signals of the subgroups in each of the M0 combinations; and determining a beamforming level of the beam being formed, as a function of the outcome of the coherence evaluations.