Device for calculating a sliding discrete fourier transform...

G - Physics – 06 – F

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354/158, 343/2

G06F 15/00 (2006.01) G01S 13/28 (2006.01) G06F 17/14 (2006.01)

Patent

CA 1244951

PRECIS DE LA DIVULGATION: L'invention a pour objet un dispositif de cal- cul d'une transformée de Fourier discrète et glissante. Ce dispositif comporte un ensemble de circuits recevant des échantillons xm+N du signal d'entrée, le signal de sortie .delta.m de cet ensemble étant appliqué à une pluralité de N étages identiques et parallèles. L'ensemble de circuits comporte un registre à décalage conférant un retard de N périodes d'échantillonnage au signal incident et un addi- tionneur réalisant la soustraction: Image des signaux d'entrée et de sortie du registre à décalage. Chacun des N étages fournit un signal de la forme: Image

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