G - Physics – 01 – S
Patent
G - Physics
01
S
349/25, 349/36
G01S 13/89 (2006.01) A61B 8/00 (2006.01) G01S 15/89 (2006.01)
Patent
CA 1188404
ABSTRACT OF THE DISCLOSURE Bidimensional imaging system by echoes compris- ing a transmitting array and a receiving array. The trans- mitting array comprises a row of transmitters parallel to a direction Oz and the receiving array comprises a row of receivers in a direction Ox. All the transmitters si- multaneously transmit signals with different codes. The signals received are demodulated and the real and imagina- ry components of these signals are applied to two multi- plexing circuits. After modulation the multiplexed signals are applied to a Fourier transformation circuit, which sequentially supplies reception channels Vk (.THETA.k) for the direction referenced by angle .THETA.k and which are stored in memories. Other memories contain signals Si (0i) trans- mitted in an angular direction referenced by 0i. The two pairs of memories are connected and the signals are applied after modulation to a convolver, which supplies signals of the bidimensional image. Application to ultrasonic submarine cameras, submarine target classifiers, medical acoustic imaging and non-destructive tests.
387341
Goudreau Gage Dubuc
Thomson-Csf
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