Time delay-phase shift combination beamformer

Details Time delay-phase shift combination beamformer Time delay-phase shift combination beamformer

1994-06-27

1995-07-25

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

G01S 1500

Patent

active

054368723

ABSTRACT:
A time delay-phase shift combination beamformer for applications where the required time delays for time delaying the received signal to achieve coherency exceed the reciprocal of the incoming signal's bandwidth, and having a time delay stage for coarse beamforming at a particular range and first beam direction and a phase shift stage for fine beam steering in a second direction at the particular range.

REFERENCES:
patent: 4387597 (1983-06-01), Brandestini
Hybrid time-delay/phase-shift digital beamforming for uniform collinear arrays by Gabel and Kurth, Sperry Research Center, Sudbury, Mass.; Journal of Acoustical Society of America, vol. 75, No. 6, Jun., 1984.
True Time-Delay Bandpass Beamforming, Horvat, Bird and Goulding; IEEE Journal of Oceanic Engineering, vol. 17, No. 2, Apr., 1992.

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