Interferometric sonar in non-linear acoustics

Details Interferometric sonar in non-linear acoustics Interferometric sonar in non-linear acoustics

G - Physics

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G01S 15/89 (2006.01) G01S 7/52 (2006.01) G01S 15/02 (2006.01) G01S 15/87 (2006.01) G10K 11/34 (2006.01)

Patent

CA 1218447

-16- ABSTRACT OF THE DISCLOSURE An interferometric sonar in non-linear acoustics for high-resolution observations of objects located in the vicinity of the sea floor comprises two end transducers for simultaneous transmission at two high frequencies F1 and F2 of the order of 200 kHz. Reception is performed by hydrophones placed between the sending transducers at the low frequency F2 - F1 of the order of 20 kHz. Angular channels are formed in two transmission sequences. Transmission takes place in phase at the frequency F2 - F1 in one sequence and in phase opposition in the other sequence in the case of the two sources generated by non-linear effects.

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