METHOD FOR HOLOGRAPHIC SCREENING OF OBJECTS AND DEVICE FOR ITS EMBODIMENT Russian patent published in 2000 - IPC

FIELD: acoustic holography, in particular, flaw detection, reconstruction medical tomography, sound imaging. SUBSTANCE: signals from dipole antenna are multiplied, sampled, subjected to scalar multiplication by m-sequence, produced by irreducible primitive polynomial over Galois field GF2 using encoding commutator and direct fast Walsh transform. Resulted hologram is subjected to reverse Walsh transform, so that image of object under investigation is produced at the end. Goal of invention is achieved by connection of outputs of pairs of acoustic receivers through multiplier, analog-to-digital converter, and encoding commutators to random access memory unit through direct fast Walsh transform unit, which produces hologram of object. Outputs of direct fast Walsh transform unit to decoding commutator of object image. EFFECT: increased definition of holographic screening of object. 2 cl, 1 dwg