Beamformer

Details Beamformer Beamformer

G - Physics

01

S

349/25

G01S 15/66 (2006.01) G01S 3/805 (2006.01) G10K 11/34 (2006.01) H01Q 3/26 (2006.01)

Patent

CA 1124826

Abstract of the Disclosure A beamformer forms a beam from a set of samples of signals from an array of elements such as sonar transducers. Sequences of signal samples from each transducer are delayed relative of each other by fractional amounts of the intersample interval. The sequences of the signal samples with the pre- determined delays therebetween are applied to a common beam- forming filter having a pass band of sufficient width to accommodate the signals. The impulse response time of the filter is longer than the intersample interval in any one of the sample sequences for providing a beam equal to the sum of regenerated transducer signals. The radiation pattern of the beam is independent of the sampling rate.

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