METHOD FOR PROCESSING ULTRASONIC SURVEY ACQUISITION SIGNALS, COMPUTER PROGRAM, AND CORRESPONDING ULTRASONIC SURVEY DEVICE

摘要

This method (700) of ultrasonic signal processing comprises the control (702) of emission transducers for M successive emissions of plane ultrasonic waves having M different emission angles, the control (702) of N receiving transducers to receive simultaneously N measurement time signals by emission, and obtaining (704) a matrix [MR (t)] of ultrasonic time signals, each coefficient MRi, j (t) of this matrix representing the measurement signal received by the i-th receiving transducer due to the j-th emission. It furthermore comprises a singular value decomposition (710) of a frequency domain [FTMR (f)] matrix obtained (708) by transformation of the matrix [MR (t)], an elimination (712) of a part singular values and a reconstitution (714) of a denoised matrix [MRU (t)] of time signals from singular values not eliminated.