Abstract: A method for calibrating an acoustic antenna including elementary transducers distributed over an antenna row or plane, about a reference transducer, the antenna defining a main axis, passing through the reference transducer, and perpendicular to the antenna row or plane, the method including: measuring signals generated by elementary transducers in response to a calibration acoustic wave from a calibration source; on the basis of these measurements, determining a temporal phase shift of the signal respectively generated by each elementary transducer; reiterating the above steps in such a way that, in at least one iteration, the position of the calibration source may be considered to be centered on the main axis; and estimating a phase shift of each elementary transducer with respect to the reference transducer.

Abstract: A method for calibrating an acoustic antenna (10), the acoustic antenna comprising a plurality of acoustic transducers (11k), each acoustic transducer being able to generate an electrical signal (sk) under the effect of a detection of an acoustic wave, the antenna comprising elementary transducers (11k) that are distributed over an antenna row or an antenna plane, about a reference transducer (110), the antenna defining a main axis (Y0), passing through the reference transducer, and perpendicular to the antenna row or antenna plane, the method comprising the following steps: a) placing a calibration source (5) in at least one position (r0, rj) with respect to the antenna, the calibration source being able to transmit a calibration acoustic wave (6); b) measuring signals (sk) generated by all or some of the elementary transducers in response to the calibration acoustic wave; c) on the basis of the measurements performed in step b), determining a temporal phase shift (p0k,n, pk,j) of the signal respectively