Serial phase shift beamformer using charge transfer devices

Details Serial phase shift beamformer using charge transfer devices Serial phase shift beamformer using charge transfer devices

1979-03-12

1980-11-11

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

With beam steering, scanning, or focussing

367123, 367126, G01S 380

Patent

active

042336783

ABSTRACT:
A serial phase shift beamformer characterized by a charge transfer device for progressive clocked transfer of quadrature component analog samples of the scanned outputs of a multiplicity of transducer elements in a curved array. Weighting resistors effect scaling of the analog samples during parallel readout of X and Y component samples prior to summation of like components and derivation of the square root of the sum of the squares of the X and Y summations to provide formed beam amplitude signals.

REFERENCES:
patent: 3274536 (1966-09-01), Abbott et al.
patent: 3370267 (1968-02-01), Barry
patent: 4166999 (1979-09-01), Brady, III
White et al., "Sonar Signal Processing with CCD's," National Technical Inmation Publication #AD783703 May 1974, pp. 7-1 thru 7-19.

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