Digital beamforming system

Details Digital beamforming system Digital beamforming system

1975-10-06

1977-01-11

Farley, Richard A.

Communications: electrical

Selective

Having indication or alarm

G01S 380

Patent

active

040030164

ABSTRACT:
Each ring of a two ring transducer array provides signals that are bandpad filtered and hard-clipped. These signals are sampled in parallel at a predetermined frequency. The sampled signals are conducted to Adder circuits with appropriate delays being applied to predetermined signals. By sequentially changing the signals having a delay inserted and those applied directly to the Adder a 360.degree. azimuthal scan is provided in discrete angular steps. The sums of Adders of each ring are then combined. The system provides scans in the horizontal direction and at predetermined depression/elevation angles.

REFERENCES:
patent: 3370267 (1968-02-01), Barry
patent: 3803543 (1974-04-01), Cioccio
patent: 3860928 (1975-01-01), Ehrlich

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