JOINT CONSTRAINTS OF TRANSITIVITY OF TIME DIFFERENCES AND DOPLER MULTI-BAND EFFECT FOR SEPARATION, CHARACTERIZATION, AND LOCALIZATION OF SOUND SOURCES BY PASSIVE ACOUSTICS

摘要

The passive path tracking method of a plurality of sources emitting first signals comprises: ▪ acquisitions by a set of N sensors (Ci) i∈ [1; N] signals transmitted by at least one source over a time window and in at least one frequency band; Signal processing including cross correlation operations (OP1) for identifying correlation peaks and deriving arrival frequency difference measurements FD and TDOA arrival time differences of the signals; ▪ a selection of a number of FDpq and TDOApq for each pair of sensors (Ci); ▪ a generation of systems of transitivity equations for each instant ti between the FDpq (ti) and the TDOApq, the equations algebraically linking the sums of each FDpq (ti) and the sums of each TDOApq of each pair of sensors; ▪ a deduction from a position of at least one source.