ULTRASONIC SURVEY SIGNAL ACQUISITION METHOD, COMPUTER PROGRAM, AND CORRESPONDING ULTRASONIC SURVEY DEVICE

摘要

This ultrasonic sound signal acquisition method (200) comprises: controlling (208) L emission transducers (1081, 108N) and N receiving transducers (1081, 108N) to receive simultaneously, for each of M emissions successive N measurement signals; obtaining (210) a matrix of ultrasonic time signals of size NxM. An initial matrix ([MC ']), of size LxM', encoding the successive transmissions is previously defined (202) for a number M 'of successive initial transmissions strictly greater than M. An acoustic field calculation is carried out (204). ) for each of the initial M's. A reduced coding matrix ([MC]), of size LxM, is obtained (206) by suppressing M'-M columns of the initial coding matrix ([MC ']) on the basis of a selection criterion applied. to M 'acoustic field calculations. Finally, the control (208) of the transmission transducers for the M successive transmissions is coded using the reduced coding matrix ([MC]).