1. A method for characterizing at least one wireless signal source, comprising: measuring, from a set of sensors having antennas, a set of technical data specific to the signals emitted by the signal source; grouping together the technical data in a set of classes depending on correlations on the data; and characterizing the signal source from the technical data having been grouped together; wherein the grouping step comprises: calculating correlations on data n-tuples with n>2; calculating a global partitioning error for different distributions of the data in the classes, the global partitioning error being defined as a sum, for all the n-tuples: of the partitioning costs of an n-tuple in the same class if all the data of the n-tuple are in the same class, the partitioning cost in the same class being a decreasing function of the correlation of the n-tuple; and of the partitioning costs of an n-tuple in different classes when all the data of the n-tuple are not in the same class, the partitioning cost in the different classes being an increasing function of the correlation of the n-tuple; and retaining as a grouping of data the distribution in the classes minimizing the global partitioning error.