Time-interpolation method for digital beamformers

Details Time-interpolation method for digital beamformers Time-interpolation method for digital beamformers

1991-01-22

1993-03-02

Mai, Tan V.

Boots, shoes, and leggings

G06F 738

Patent

active

051915464

ABSTRACT:
An improved time-interpolation method for digital time-domain beamformers provided. The method determines an input channel value at a known fractional delay as a two-stage process. In a first stage, input channel parameters common to all beams and independent of the known fractional delay are determined. In a second stage, the input channel parameters are weighted and summed for each beam to determine the input channel value at the known fractional delay. Weighting of the parameters is based upon the known fractional delay and the frequency band of interest.

REFERENCES:
patent: 4497035 (1985-01-01), Yabuuchi et al.
patent: 4511882 (1985-04-01), Keyes, IV et al.
patent: 4837722 (1989-06-01), Sara
patent: 4975866 (1990-12-01), Aoki et al.

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